Gotowe bibliografie tematyczne / Tunable Microwave Circuits

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Gotowa bibliografia na temat „Tunable Microwave Circuits”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 1 lutego 2022

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Artykuły w czasopismach na temat "Tunable Microwave Circuits"

Tae-Yeoul Yun i Kai Chang. "Piezoelectric-transducer-controlled tunable microwave circuits". IEEE Transactions on Microwave Theory and Techniques 50, nr 5 (maj 2002): 1303–10. http://dx.doi.org/10.1109/22.999143.

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Fu, Jia-Shiang, Xinen Alfred Zhu, Jamie D. Phillips i Amir Mortazawi. "Improving Linearity of Ferroelectric-Based Microwave Tunable Circuits". IEEE Transactions on Microwave Theory and Techniques 55, nr 2 (luty 2007): 354–60. http://dx.doi.org/10.1109/tmtt.2006.889323.

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Kanagala, Sekhar, Faruque Ahamed, Urmila Nath, Shilpa Wakade i Guru Subramanyam. "Electrical Modeling of Ferroelectric Tunable Microwave Components and Circuits". Ferroelectrics 329, nr 1 (grudzień 2005): 13–21. http://dx.doi.org/10.1080/00150190500314890.

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Sorrentino, Roberto, Paola Farinelli, Alessandro Cazzorla i Luca Pelliccia. "RF-MEMS Application to RF Tuneable Circuits". Advances in Science and Technology 100 (październik 2016): 100–108. http://dx.doi.org/10.4028/www.scientific.net/ast.100.100.

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The bursting wireless communication market, including 5G, advanced satellite communication systems and COTM (Communication On The Move) terminals, require ever more sophisticated functions, from multi-band and multi-function operations to electronically steerable and reconfigurable antennas, pushing technological developments towards the use of tunable microwave components and circuits. Reconfigurability allows indeed for reduced complexity and cost of the apparatuses. In this context, RF MEMS (Micro-Electro-Mechanical-Systems) technology has emerged as a very attractive solution to realize both tunable devices (e.g. variable capacitors, inductors and micro-relays), as well as complex circuits (e.g. tunable filters, reconfigurable matching networks and reconfigurable beam forming networks for phased array antennas). High linearity, low loss and high miniaturization are the typical advantages of RF MEMS over conventional technologies. Micromechanical components fabricated via IC-compatible MEMS technologies and capable of low-loss filtering, switching and frequency generation allow for miniaturized wireless front-ends via higher levels of integration. In addition, the inherent high linearity of the MEMS switches enables carrier aggregations without introducing intermodulation distortions. This paper will review the recent advances in the development of the RF MEMS to RF tunable circuits and systems.

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Li, Hai-Chao, Hai-Yang Zhang, Qing He i Guo-Qin Ge. "Nonlinear manipulation of tunable microwave amplification and attenuation in superconducting circuits". EPL (Europhysics Letters) 115, nr 5 (1.09.2016): 54002. http://dx.doi.org/10.1209/0295-5075/115/54002.

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MANSOUR, MOHAMED M., MOSTAFA A. ELMALA, ABDEL-AZIZ T. SHALABY i EL-SAYED M. EL-RABAIE. "THIN FILM FERROELECTRIC TUNABLE ZEROTH-ORDER RESONATOR BASED ON CRLH METAMATERIALS". Journal of Circuits, Systems and Computers 23, nr 01 (styczeń 2014): 1450013. http://dx.doi.org/10.1142/s0218126614500133.

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In this paper, we propose a tunable CRLH ZOR based on the latest resurgent of ferroelectric materials. It is known that for most resonant structures, attainment of optimal performance requires some level of additional tuning through either mechanical means (i.e., with tuning screws) or other coupling mechanisms. Therefore, incorporation of electronic tuning into high temperature superconductor (HTS) material components without degradation of performance is very attractive. The result will be low-loss microwave components that could be fine-tuned for optimal performance, with the additional attribute of being tunable over a broadband frequency range. The dielectric properties of the ferroelectric thin film, and the thickness of the ferroelectric film, play a fundamental role in the frequency or phase tunability and the overall insertion loss of the circuit. The main driving force toward using the ferroelectric is the potential for substantial miniaturization of microwave components and systems and the potential for integration with microelectronic circuits due to the development of thin and thick film ferroelectric technology. The ZOR is designed, and simulated by the full-wave analysis software. The response shows a variation of electromagnetic characteristics with the applied electric field, ferroelectric thickness and the operating temperature.

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Zhong, Wen-Xue, Guang-Ling Cheng i Ai-Xi Chen. "Coherent control of tunable entanglement between two resonators in superconducting circuits". International Journal of Quantum Information 12, nr 01 (luty 2014): 1450009. http://dx.doi.org/10.1142/s0219749914500099.

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We present an efficient method to generate Einstein–Podolsky–Rosen (EPR) entanglement of two microwave photons with different frequencies in two superconducting resonators. Our scheme is based on the sideband couplings of two resonators with a single gap-tunable superconducting quantum circuits driven by a controlled field. By the proper choice of the physical parameters, the nonlinear interaction of parametric down-conversion occurs between two resonators while the superconducting qubit remains in the original state, which is responsible for the entanglement generation. The present scheme would provide a promising alternative approach to scalable quantum information processing in solid-state systems.

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Kapitanova, Polina, Dmitry Kholodnyak, Stefan Humbla, Ruben Perrone, Jens Mueller, Matthias A. Hein i Irina Vendik. "Tunable microwave devices based on left/right-handed transmission line sections in multilayer implementation". International Journal of Microwave and Wireless Technologies 1, nr 4 (25.06.2009): 323–29. http://dx.doi.org/10.1017/s175907870999033x.

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Metamaterial transmission lines can be realized as a combination of right- and left-handed transmission line (TL) sections exhibiting positive and negative dispersion. This approach gives additional degrees of freedom for improving the performance of microwave devices. Artificial right- and left-handed sections, which are based on lumped-element unit cells consisting of inductance and capacitances (LC-cells), are used. This makes it possible to decrease dimensions of the devices drastically. Furthermore, using variable capacitors in LC-cells allows designing tunable devices. This paper presents the results of design, numerical simulation, and experimental investigation of a tunable rat-race ring and free-of-spurious response dual-band filter manufactured as integrated ceramic multilayer circuits based on low-temperature co-fired ceramics. Commercial semiconductor varactors have been used as tunable components.

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Wu, Kun, Guangling Cheng i Aixi Chen. "Tunable asymmetric Einstein–Podolsky–Rosen steering of microwave photons in superconducting circuits". Journal of the Optical Society of America B 37, nr 2 (14.01.2020): 337. http://dx.doi.org/10.1364/josab.382881.

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Evseev, Vladimir, Mikhail Ivlev, Elena Lupanova, Sergey Nikulin, Vitaliy Petrov i Andrey Terentyev. "Automation of S-parameters measurements of high-power microwave transistors in a contact device with tunable strip matching circuits". ITM Web of Conferences 30 (2019): 11002. http://dx.doi.org/10.1051/itmconf/20193011002.

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In the practice by microwave power transistor amplifiers developing, the variable load method is usually used to determine the impedances of matching circuits in the complex conjugate matching mode. This solution involves the use of expensive equipment - coaxial impedance tuners and contact devices for mounting transistors in low impedance strip lines. An even more complicated and expensive way is the concept of X- parameters, based on the use of unique measuring equipment - a non-linear vector network analyzer, and a simulator for non-linear circuits design. The article proposes an alternative solution adapted to the operation of the transistor in real conditions and allowing to design the output stages of microwave power amplifiers using analysis and optimization of linear electrical circuits. The essence of the proposed solution is to automate the measurement of non-linear S-parameters of high-power microwave transistors in a contact device with tunable strip matching circuits for various DC supply voltage, frequency and input power mode in case of continuous or pulse input signal. The nonlinear S-parameters of the contact device are measured using the method of spatially remote variable load in the frequency range, in which the line conditioning and the maximum output power are achieved. The minimum of the reflected wave amplitude and the maximum gain are reached using movable strip matching transformers. The S-parameters measured in the coaxial line are automatically recalculated to the physical boundaries of the transistor by registering the positions of the input and output strip transformers.

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Rozprawy doktorskie na temat "Tunable Microwave Circuits"

Gamlath, Christy D. "Investigation of optically tunable microwave circuits and antennas". Thesis, University of Bristol, 2016. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.701379.

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Much of the recent work on optically tunable methods have relied on the use of optically tunable switches. Although these methods provide effective tuning of microwave devices particularly in the lower microwave band, there is the fundamental limitation that the position of the switch is always fixed which limits the capability for tuning. Several previous investigations have looked at using spatial variations in the illumination pattern. These have always required the use of high power bulky laser sources which cannot be integrated into the microwave device. The recent advances in semiconductor laser technology allow both intensity and spatial profiles of illumination to be varied dynamically at speeds of up to fractions of a microsecond while maintaining a compact form factor. This opens up a new area for investigation in optically tunable microwave devices which provides the motivation for the current work. The primary focus of the project is to investigate new designs of optically tunable microwave circuits arid antennas that can take advantage of the spatial and intensity variations of the illumination profile and at the same time maintain a small form factor. In order to achieve this a significant portion of work was required to characterize the loss mechanisms taking place inside the optically illuminated region at high frequencies. This material is presented and is followed by investigations into new types of tunable microwave devices. The significant contributions of this work are contained in Chapters 4,5, and 6. The characterization of optically illuminated plasmas presented in current literature is limited to small regions of illumination. Chapter 4 extends this microwave characterization to longer lengths of illumination and also to higher microwave frequencies. The first part of Chapter 5 presents new techniques for tunable loads based on illumination pattern variations. The second part presents a novel technique for producing variable true time delay phase shifts which has not been demonstrated previously. Chapter 6 shows several new methods for designing tuneable microwave antennas based on integrating light sources within the microwave structure. This work has contributed to expanding the current literature on optically tunable devices. The fundamental focus has been on the use of miniature light sources since these can be integrated into the structure of the microwave device to form a compact tunable package. Several new ideas have been presented based on this concept.

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Fardin, Ernest Anthony, i efardin@ieee org. "Barium Strontium Titanate Thin Films for Tunable Microwave Applications". RMIT University. Electrical and Computer Engineering, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20080104.135507.

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There has been unprecedented growth in wireless technologies in recent years; wireless devices such as cellular telephones and wireless local area network (WLAN) transceivers are becoming ubiquitous. It is now common for a single hardware device, such as a cellular telephone, to be capable of multi-band operation. Implementing a dedicated radio frequency (RF) front-end for each frequency band increases the component count and therefore the cost of the device. Consequently, there is now a requirement to design RF and microwave circuits that can be reconfigured to operate at different frequency bands, as opposed to switching between several fixed-frequency circuits. Barium strontium titanate (BST) thin films show great promise for application in reconfigurable microwave circuits. The material has a high dielectric constant which can be controlled by the application of a quasi-static electric field, combined with relatively low losses at microwave frequencies. Tunable microwave components based on BST-thin films have the potential to replace several fixed components, thereby achieving useful size and cost reductions. This thesis is concerned with the growth and microwave circuit applications of BST thin films on c- and r-plane sapphire substrates. Sapphire is an ideal substrate for microwave integrated circuit fabrication due to its low cost and low loss. Electronically tunable capacitors (varactors) were fabricated by patterning interdigital electrode structures on top of the BST films. High capacitance tunabilities of 56% and 64% were achieved for the films grown on c-plane and r-plane sapphire, respectively, at 40 V bias. A novel electronically tunable 3 dB quadrature hybrid circuit was also developed. Prototypes of this circuit were initially implemented using commercial varactor diodes, in order to validate the design. An integrated version of the coupler was then fabricated using BST varactors on c-plane sapphire. The results achieved demonstrate the potential of sapphire-based BST thin films in practical microwave circuits.

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Kafaratzis, Andreas. "Tunable and nonlinear RF/microwave circuits based on left-handed metamaterials". Thesis, University of Manchester, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.496239.

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A major drive in modem RF and microwave circuits design is miniaturisation and performance enhancement through new design and fabrication techniques. Left-handed (LH) metamaterials have sparked the interest of RF and microwave engineers due to their unique electromagnetic properties which not only can enhance circuit performance, but also significantly reduce circuit size. The work in this thesis focuses on the one-dimensional (1-D) circuit approach of LH. metamaterials termed LH transmission line (TL) in developing LH nonlinear and tunable circuits. Two important characteristics of LH TLs are phase advance and anomalous dispersion. The propagation of steady-state pulses, termed envelope solitons, has been investigated theoretically and numerically in a LH nonlinear transmission line (NLTL), where pulse broadening due to anomalous dispersion was balanced by pulse compression due to nonlinearity provided by pn varactor diodes. Additionally, under large-signal conditions, a LH NLTL behaves as a broadband frequency multiplier. A LH NLTL tripler was fabricated and measured and direct comparison was made with a conventional NLTL multiplier. Comprehensive results show that short LH NLTLs are more efficient in power conversion than their conventional counterparts, at least at low and moderate power levels.

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Ahsan, Naveed. "Programmable and Tunable Circuits for Flexible RF Front Ends". Licentiate thesis, Linköping University, Linköping University, Department of Electrical Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-14864.

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Most of today’s microwave circuits are designed for specific function and specialneed. There is a growing trend to have flexible and reconfigurable circuits. Circuitsthat can be digitally programmed to achieve various functions based on specific needs. Realization of high frequency circuit blocks that can be dynamically reconfigured toachieve the desired performance seems to be challenging. However, with recentadvances in many areas of technology these demands can now be met.

Two concepts have been investigated in this thesis. The initial part presents thefeasibility of a flexible and programmable circuit (PROMFA) that can be utilized formultifunctional systems operating at microwave frequencies. Design details andPROMFA implementation is presented. This concept is based on an array of genericcells, which consists of a matrix of analog building blocks that can be dynamicallyreconfigured. Either each matrix element can be programmed independently or severalelements can be programmed collectively to achieve a specific function. The PROMFA circuit can therefore realize more complex functions, such as filters oroscillators. Realization of a flexible RF circuit based on generic cells is a new concept.In order to validate the idea, a test chip has been fabricated in a 0.2μm GaAs process, ED02AH from OMMIC^TM. Simulated and measured results are presented along withsome key applications like implementation of a widely tunable band pass filter and anactive corporate feed network.

The later part of the thesis covers the design and implementation of tunable andwideband highly linear LNAs that can be very useful for multistandard terminals suchas software defined radio (SDR). One of the key components in the design of a flexibleradio is low noise amplifier (LNA). Considering a multimode and multiband radiofront end, the LNA must provide adequate performance within a large frequency band.Optimization of LNA performance for a single frequency band is not suitable for thisapplication. There are two possible solutions for multiband and multimode radio frontends (a) Narrowband tunable LNAs (b) Wideband highly linear LNAs. A dual bandtunable LNA MMIC has been fabricated in 0.2μm GaAs process. A self tuningtechnique has also been proposed for the optimization of this LNA. This thesis alsopresents the design of a novel highly linear current mode LNA that can be used forwideband RF front ends for multistandard applications. Technology process for thiscircuit is 90nm CMOS.

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Bernacil, Michael A. Derickson Dennis. "Microwave signal generation using self-heterodyning of a fast wavelength switching SG-DBR laser : a thesis /". [San Luis Obispo, Calif. : California Polytechnic State University], 2008. http://digitalcommons.calpoly.edu/theses/19/.

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Thesis (M.S.)--California Polytechnic State University, 2008.
Major professor: Dennis Derickson, Ph.D. "Presented to the faculty of California Polytechnic State University, San Luis Obispo." "In partial fulfillment of the requirements for the degree [of] Master of Science in Electrical Engineering." "May 2008." Includes bibliographical references (leaves 147-149). Also available on microfiche (3 sheets).

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Howard, Duane Clarence. "Reconfigurable amplifiers and circuit components for built-in-self testing and self-healing in SiGe BiCMOS technology". Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/51823.

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The design of reconfigurable microwave and millimeter-wave circuit components and on-chip testing circuitry are demonstrated. These components are designed to enable the mitigation of process faults, aging, radiation effects, and other mechanisms that lead to performance degradation in circuits and systems. The presented work is primarily based on SiGe HBTs in BiCMOS technology and harnesses the inherent resilience of SiGe to mechanisms that degrade transistor performance. However, CMOS FETs are also used in limited applications, such as in the design of switches, op-amps, and DACs. Individual circuit blocks and circuit systems are characterized with the aim of evaluating their performance under nominal conditions as well as in the context of extreme environments and other deleterious phenomena.

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Hamdoun, Abdelaziz. "Design of GaN-based microwave components and application to novel high power reconfigurable antennas". Thesis, Rennes 1, 2016. http://www.theses.fr/2016REN1S069/document.

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Cette thèse démontre la faisabilité de l'utilisation de la technologie Nitrure de Gallium (GaN) dans les systèmes RF / micro-ondes reconfigurables. Les principales caractéristiques de ce type de technologie des semi-conducteurs se résident dans ses capacités de supporter des puissances élevées avec un rendement aussi élevé. En outre, la technologie GaN est un candidat très prometteur pour la réalisation des applications haute puissance/haute fréquence. Le travail de cette thèse est divisé en deux parties principales. La première est consacrée au développement, à l’analyse et à la caractérisation en DC et en RF jusqu'à 20 GHz des circuits actifs réalisés à base de la technologie GaN, tels que les diodes varicap et les commutateurs. Les diodes varicap fabriquées ont été modélisées en petit et grand signal par des équations analytiques contenant des coefficients empiriques ainsi un modèle en circuit a été développé, tandis aux commutateurs, un modèle de circuit en petit signal a été proposé. Ces composants actifs ont été réalisés en utilisant les processus GaN HEMTs de fabrication offerts par le Conseil National de Recherches du Canada (CNRC). La deuxième partie aborde les aspects de l'intégration de ces dispositif actifs GaN et de la conception des circuits reconfigurables proposés, tels que déphaseur reconfigurable, -3dB 90° coupleur hybride reconfigurable, oscillateur accordable en fréquence, commutation de faisceau et accordabilité en fréquence d’un réseau d'antennes patch tout en utilisant ces diodes varicap et commutateur GaN développées au fil de cette thèse. A travers cette thèse, l'utilisation de la technologie GaN pour la conception des designs RF reconfigurables en fréquence pour les applications fonctionnant au-dessous de 10 GHz a été démontrée
This thesis demonstrates the feasibility of using the Gallium Nitride (GaN) technology in reconfigurable RF/microwave systems. The main features of this type of semiconductor technology being its high power with high efficiency. In addition, GaN technology is a very promising candidate for realizing high power/high frequency applications. The thesis work is divided in two main parts. The first one is devoted to active GaN devices, such as varactor diodes and switches, development, analyze and characterization via DC and RF up to 20 GHz. The fabricated varactor were modeled by analytic equations containing empirical coefficients and also a physic circuit model was developed, while for the switches only a small signal physic circuit model was proposed. These GaN devices was manufactured by using the Canadian National Research Council (NRC) GaN HEMTs processes. The second part addresses the integration and design aspects of the reconfigurable proposed circuits, such as tunable phase shifter, reconfigurable 3-dB 90° hybrid coupler, tunable frequency oscillator, beam switching antenna array and matching reconfigurable patch antenna based on these developed GaN varactors and switches devices. The use of GaN on highly efficient reconfigurable designs for broadband RF/microwave applications operating below 10 GHz was demonstrated

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Ekmekci, Evren. "Design, Fabrication And Characterization Of Novel Metamaterials In Microwave And Terahertz Regions: Multi-band, Frequency-tunable And Miniaturized Structures". Phd thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612730/index.pdf.

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This dissertation is focused on the design, fabrication, and characterization of novel metamaterials in microwave and terahertz regions with the following outcomes: A planar µ
-negative metamaterial structure, called double-sided SRR (DSRR), is proposed in the first part of this study. DSRR combines the features of a conventional split ring resonator (SRR) and a broadside-coupled SRR (BC-SRR) to obtain much better miniaturization at microwave frequencies for a given physical cell size. In addition to DSRR, double-sided multiple SRR (DMSRR), double-sided spiral resonator (DSR), and double-sided U-spiral resonator (DUSR) have been shown to provide smaller electrical sizes than their single-sided versions under magnetic excitation. In the second part of this dissertation, a novel multi-band tunable metamaterial topology, called micro-split SRR (MSSRR), is proposed. In addition to that, a novel magnetic resonator structure named single loop resonator (SLR) is suggested to provide two separate magnetic resonance frequencies in addition to an electric resonance in microwave region. In the third part, two different frequency tunable metamaterial topologies called BC-SRR and gap-to-gap SRR are designed, fabricated and characterized at terahertz frequencies with electrical excitation for the first time. In those designs, frequency tuning based on variations in near field coupling is obtained by in-plane horizontal or vertical displacements of the two SRR layers. The values of frequency shifts obtained for these tunable metamaterial structures are reported to be the highest values obtained in literature so far. Finally, in the last part of this dissertation, novel double-sided metamaterial based sensor topologies are suggested and their feasibility studies are presented.

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Abdalla, Mohamed. "Metamaterial-Inspired CMOS Tunable Microwave Integrated Circuits For Steerable Antenna Arrays". Thesis, 2009. http://hdl.handle.net/1807/17720.

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This thesis presents the design of radio-frequency (RF) tunable active inductors (TAIs) with independent inductance (L) and quality factor (Q) tuning capability, and their application in the design of RF tunable phase shifters and directional couplers for wireless transceivers. The independent L and Q tuning is achieved using a modided gyrator-C architecture with an additional feedback element. A general framework is developed for this Q- enhancement technique making it applicable to any gyrator-C based TAI. The design of a 1.5V, grounded, 0.13um CMOS TAI is presented. The proposed circuit achieves a 0.8nH-11.7nH tuning range at 2GHz, with a peak-Q in excess of 100. Furthermore, printed and integrated versions of tunable positive/negative refractive index (PRI /NRI) phase shifters, are presented in this thesis. The printed phase shifters are comprised of a microstrip transmission-line (TL) loaded with varactors and TAIs, which, when tuned together, extends the phase tuning range and produces a low return loss. In contrast, the integrated phase shifters utilize lumped L-C sections in place of the TLs, which allows for a single MMIC implementation. Detailed experimental results are presented in the thesis. As an example, the printed design achieves a phase of -40 to +34 degrees at 2.5GHz. As another application for the TAI, a reconfigurable CMOS directional coupler is presented in this thesis. The proposed coupler allows electronic control over the coupling coefficient, and the operating frequency while insuring a low return loss and high isolation. Moreover, it allows switching between forward and backward operation. These features, combined together, would allow using the coupler as a duplexer to connect a transmitter and a receiver to a single antenna. Finally, a planar electronically steerable patch array is presented. The 4-element array uses the tunable PRI/NRI phase shifters to center its radiation about the broadside direction. This also minimizes the main beam squinting across the operating bandwidth. The feed network of the array uses impedance transformers, which allow identical interstage phase shifters. The proposed antenna array is capable of continuously steering its main beam from -27 to +22 degrees of the broadside direction with a gain of 8.4dBi at 2.4GHz.

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Części książek na temat "Tunable Microwave Circuits"

"Electronically Tunable Ring Resonators". W Microwave Ring Circuits and Related Structures, 97–126. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2005. http://dx.doi.org/10.1002/0471721298.ch4.

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M. Mansour, Mohamed, i Haruichi Kanaya. "Tunable Zeroth-Order Resonator Based on Ferroelectric Materials". W Multifunctional Ferroelectric Materials. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.98475.

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Tunable microwave devices have the benefits of added functionality, smaller form factor, lower cost, and lightweight, and are in great demand for future communications and radar applications as they can extend the operation over a wide dynamic range. Current tunable technologies include several schemes such as ferrites, semiconductors, microelectromechanical systems (MEMS), and ferroelectric thin films. While each technology has its own pros and cons, ferroelectric thin film-based technology has proved itself as the potential candidate for tunable devices due to its simple processes, low power consumption, high power handling, small size, and fast tuning. A tunable Composite Right Left-Handed Zeroth Order Resonator (CRLH ZOR) is introduced in this chapter and it relies mainly on the latest advancement in the ferroelectric materials. It is common that for achieving optimum performance for the resonant structure, this involves the incorporation of an additional tuning by either mechanical means (i.e. with tuning screws) or other coupling mechanisms. The integration between electronic tuning and High-Temperature Superconducting (HTS) components yields a high system performance without degradation of efficiency. This leads not only low-loss microwave components that could be fine-tuned for maximum efficiency but will provide a tunable device over a broadband frequency spectrum as well. The dielectric properties of the ferroelectric thin film, and the thickness of the ferroelectric film, play a fundamental role in the frequency or phase tunability and the overall insertion loss of the circuit. The key advantages of using ferroelectric are the potential for significant size-reduction of the microwave components and systems and the cabibility for integration with microelectronic circuits due to the utilization of thin and thick ferroelectric film technology. In this chapter, ZOR is discussed and the conceptual operation is introduced. The ZOR is designed and simulated by the full-wave analysis software. The response is studied using electromagnetic characteristics with the applied electric field, ferroelectric thickness, and the operating temperature.

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Streszczenia konferencji na temat "Tunable Microwave Circuits"

Stemmer, Susanne, Dmitri O. Klenov, Joel Cagnon, Robert A. York, Jiwei Lu, Nicholas H. Finstrom, Jaehoon Park i in. "High-permittivity thin films for tunable microwave circuits". W 2007 IEEE Antennas and Propagation Society International Symposium. IEEE, 2007. http://dx.doi.org/10.1109/aps.2007.4395846.

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Pierantoni, Luca, Davide Mencarelli, Maurizio Bozzi, Riccardo Moro i Stefano Bellucci. "Microwave applications of graphene for tunable devices". W 2014 9th European Microwave Integrated Circuits Conference (EuMIC). IEEE, 2014. http://dx.doi.org/10.1109/eumic.2014.6997905.

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Nordquist, Christopher D., Arnoldo Muyshondt, Michael V. Pack, Patrick S. Finnegan, Christopher W. Dyck, Isak C. Reines, Garth M. Kraus, George R. Sloan i Charles T. Sullivan. "MEMS high-Q tunable capacitor for reconfigurable microwave circuits". W Micromachining and Microfabrication, redaktor Siegfried W. Janson. SPIE, 2003. http://dx.doi.org/10.1117/12.480768.

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Bastida, E. M., G. P. Donzelli i L. Scopelliti. "GaAs Monolithic Microwave Integrated Circuits using Broadband Tunable Active Inductors". W 19th European Microwave Conference, 1989. IEEE, 1989. http://dx.doi.org/10.1109/euma.1989.334012.

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Issakov, V., D. Siprak, A. Koller i P. Wambacq. "Tunable inductance using transmission lines". W 2014 9th European Microwave Integrated Circuits Conference (EuMIC). IEEE, 2014. http://dx.doi.org/10.1109/eumic.2014.6997802.

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Watson, Alexander M., Thomas F. Leary, Jonathan Itokazu, Aji G. Mattamana, Tony Quach, Aaron T. Ohta, Wayne A. Shiroma i Christopher E. Tabor. "Tunable Microwave Inductor Using Liquid-Metal Microfluidics". W 2021 IEEE Texas Symposium on Wireless and Microwave Circuits and Systems (WMCS). IEEE, 2021. http://dx.doi.org/10.1109/wmcs52222.2021.9493288.

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Schuster, Christian, Alex Wiens, Martin Schusler, Christian Kohler, Joachim Binder i Rolf Jakoby. "Hairpin bandpass filter with tunable center frequency and tunable bandwidth based on screen printed ferroelectric varactors". W 2016 11th European Microwave Integrated Circuits Conference (EuMIC). IEEE, 2016. http://dx.doi.org/10.1109/eumic.2016.7777600.

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Poddar, A. K., U. L. Rohde i T. Itoh. "Metamaterial Möbius Strips (MMS): Tunable oscillator circuits". W 2014 IEEE/MTT-S International Microwave Symposium - MTT 2014. IEEE, 2014. http://dx.doi.org/10.1109/mwsym.2014.6848238.

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Pantoli, L., V. Stornelli i G. Leuzzi. "A wideband class-AB tunable active filter". W 2015 10th European Microwave Integrated Circuits Conference (EuMIC). IEEE, 2015. http://dx.doi.org/10.1109/eumic.2015.7345159.

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Pantoli, L., V. Stornelli, G. Leuzzi, Li Hongjun i Hu Zhifu. "GaAs MMIC tunable active filter". W 2017 Integrated Nonlinear Microwave and Millimetre-wave Circuits Workshop (INMMiC). IEEE, 2017. http://dx.doi.org/10.1109/inmmic.2017.7927304.

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Raporty organizacyjne na temat "Tunable Microwave Circuits"

McColl, Malcolm. Voltage-Tunable Microwave Monolithic Integrated Circuits. Fort Belvoir, VA: Defense Technical Information Center, marzec 1988. http://dx.doi.org/10.21236/ada193003.

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