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Academic literature on the topic 'Coplanar waveguide transmission line'

Author: Grafiati

Published: 5 June 2025

Last updated: 24 June 2025

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Journal articles on the topic "Coplanar waveguide transmission line"

Knyazev N. S., Malkin A. I., and Chechetkin V. A. "Losses measurement method for transmission lines at mmWave." Technical Physics Letters 48, no. 3 (2022): 34. http://dx.doi.org/10.21883/tpl.2022.03.52880.18981.

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An experimental method was developed to determine losses in microstrip and coplanar transmission lines for devices operating in the frequency range of 77-81 GHz. The parameters of the scattering matrices are obtained using a vector network analyzer and frequency upconverters. The calculation of losses in waveguide-coplanar and coplanar-microstrip adapters is made. Keywords: losses, attenuation, microstrip line, coplanar waveguide, electrodynamic parameters.

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Son, Ki Jun, Jang Hyeon Jeong, Sung Jo Han, and Young Yun. "A Short Wavelength and Low Loss Thin-Film Transmission Line Employing ML/CPW Composite Structure on Silicon Substrate." Applied Mechanics and Materials 442 (October 2013): 138–41. http://dx.doi.org/10.4028/www.scientific.net/amm.442.138.

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In this work, a thin-film transmission line (TFTL) employing microstrip line/coplanar waveguide (ML/CPW) on silicon substrate was proposed, and its RF characteristics were investigated. The TFTL employing ML/CPW composite structure exhibited the wavelength shorter than conventional coplanar waveguide and thin-film microstrip line. Concretely, at 10 GHz, the wavelength of conventional coplanar waveguide and thin film waveguide is 10.35 and 7.83 mm, while the wavelength of the TFTL employing ML/CPW composite structure was 6.26 mm, which was 60.5 % of the conventional coplanar waveguide. The TFTL employing ML/CPW composite structure with a length of λ/8 showed the loss less than 1.12 dB up to 30 GHz, which was lower than conventional coplanar waveguide and thin-film microstrip line. Above results indicates that the TFTL employing ML/CPW composite structure is a promising candidate for application to a miniaturization of RF components on silicon RFIC.

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Abdalla, M., H. Elregaily, and A. Mitkees. "Analysis of Ferrite Coplanar Waveguide Transmission Line." International Conference on Aerospace Sciences and Aviation Technology 14, AEROSPACE SCIENCES (2011): 1–11. http://dx.doi.org/10.21608/asat.2011.23389.

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Farcich, Nick J., and P. M. Asbeck. "A three-dimensional transmission line with coplanar waveguide features." Microwave and Optical Technology Letters 48, no. 11 (2006): 2189–92. http://dx.doi.org/10.1002/mop.21881.

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Yang, Lei, and Doo-Yeong Yang. "High Pass Filter Design Using Folded Coplanar Waveguide CRLH Transmission Line." International Journal of Contents 11, no. 3 (2015): 63–68. http://dx.doi.org/10.5392/ijoc.2015.11.3.063.

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Nary, K. R., K. G. Bellare, and S. I. Long. "A model for coplanar waveguide transmission line structures on semiconductor substrates." IEEE Transactions on Microwave Theory and Techniques 41, no. 11 (1993): 2034–37. http://dx.doi.org/10.1109/22.273433.

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Shi, Yuan, Qingsheng Zeng, Zhefei Wang, et al. "Wideband asymmetric coplanar waveguide antenna using composite right/left‐handed transmission line." Microwave and Optical Technology Letters 64, no. 6 (2022): 1062–69. http://dx.doi.org/10.1002/mop.33216.

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Seck, Daouda, Djamel Allal, Florent Marlec, Clément Lenoir, Mohamed Sebbache, and Kamel Haddadi. "Nanoscale Calibration Standards for On-Wafer S-Parameters measurements up to 110 GHz." EPJ Web of Conferences 323 (2025): 12003. https://doi.org/10.1051/epjconf/202532312003.

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We report the first experimental results on the design and fabrication of nanoscale on-wafer calibration standards operating up to 110 GHz. The propagation constant and effective permittivity of coplanar waveguide (CPW) transmission lines (TLs) are extracted from raw S-parameters using the Thru-Reflect-Line (TRL) method. Experimental data show deviations in extracted propagation characteristics when comparing nanostructures to microscale structures.

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Lee, Hee-Jo, Nathan Jeong, and Hyang Hee Choi. "Microwave Properties of Coplanar Waveguide-Based PEDOT:PSS Conducting Polymer Line in Ethanol Gas Atmosphere." Materials 13, no. 7 (2020): 1759. http://dx.doi.org/10.3390/ma13071759.

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This study aims to investigate the microwave properties of coplanar waveguide (CPW)-based poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) conducting polymer line in an ethanol gas atmosphere, with the frequency range of 0.5–2 GHz. For an ethanol-exposed PEDOT:PSS line (test sample), the transmission coefficient (S21) decreased immediately; moreover, the microwave effective conductivity (σm/w) decreased simultaneously, compared with the ethanol-free PEDOT:PSS line (reference sample). The immediate variations in ΔS21 ( = S21,ethanol − S21,free) and Δσm/w ( = σm/w,ethanol − σm/w,free) were approximately 10.2 dB and 2.7 × 104 S/m, respectively. Furthermore, in the analysis of the circuit model of the PEDOT:PSS line, the characteristic impedance and distributed elements, i.e., resistance (R) and inductance (L) per length, of the test sample increased, compared with the reference sample. However, upon stopping the exposure to ethanol gas, the microwave properties of the test sample instantaneously recovered to those of the reference sample. According to these critical observations, we could confirm that the coplanar waveguide with a PEDOT:PSS line shows a significant difference in the diverse microwave properties, through rapid response to the ethanol gas at room temperature.

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Biurrun-Quel, Carlos, Jorge Teniente, and Carlos del-Río. "Reduced Loss and Prevention of Substrate Modes with a Novel Coplanar Waveguide Based on Gap Waveguide Technology." Sensors 23, no. 6 (2023): 2909. http://dx.doi.org/10.3390/s23062909.

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The Gap Waveguide technology utilizes an Artificial Magnetic Conductor (AMC) to prevent the propagation of electromagnetic (EM) waves under certain conditions, resulting in various gap waveguide configurations. In this study, a novel combination of Gap Waveguide technology and the traditional coplanar waveguide (CPW) transmission line is introduced, analyzed, and demonstrated experimentally for the first time. This new line is referred to as GapCPW. Closed-form expressions for its characteristic impedance and effective permittivity are derived using traditional conformal mapping techniques. Eigenmode simulations using finite-element analysis are then performed to assess its low dispersion and loss characteristics. The proposed line demonstrates an effective suppression of the substrate modes in fractional bandwidths up to 90%. In addition, simulations show that a reduction of up to 20% of the dielectric loss can be achieved with respect to the traditional CPW. These features depend on the dimensions of the line. The paper concludes with the fabrication of a prototype and validation of the simulation results in the W band (75–110 GHz).

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Dissertations / Theses on the topic "Coplanar waveguide transmission line"

Mo, Tingting. "Coplanar waveguide components and their applications in microwave circuits /." access abstract and table of contents access full-text, 2006. http://libweb.cityu.edu.hk/cgi-bin/ezdb/thesis.pl?phd-ee-b21471514a.pdf.

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Thesis (Ph.D.)--City University of Hong Kong, 2006. "Submitted to Department of Electronic Engineering in partial fulfillment of the requirements for the degree of Doctor of Philosophy" Includes bibliographical references.

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Pink, Clive Desmond. "Liquid level measurement using a coplanar transmission line." Master's thesis, University of Cape Town, 1988. http://hdl.handle.net/11427/8326.

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Bibliography: leaves 93-94. The coplanar line has been used very successfully as an element in microwave circuits. Small size, high Q-factor, and accurate reproduction, are some of its many advantages. The coplanar transmission lines discussed in this report, are targeted at liquid level measurement, and are typically 30 cm. long. Their operating frequencies are consequently much lower than those of microwave coplanar waveguides, but they have common advantages. The factor which separates the coplanar line from similar liquid level sensors, is that it makes use of the electrical component of the electromagnetic fringe field, setup between its inner conductor, and the surrounding ground plane. The line is effectively a sharply tuned resonator, incorporated as the frequency controlling element of an electronic oscillator. The output frequency falls as a dielectric material penetrates the fringe field. An impressive sensitivity is accomplished by using very thin conductors, thereby ensuring that the fringe field energy is maximised. The most important feature of this sensor is its ability to operate non-intrusively when used with non-conducting vessels, or if employed in a metal tank, the unit can be encased in a dielectric material where the line is non-contacting (the liquid does not penetrate the unit). This combined with its excellent mechanical and electrical stability, and an accuracy better than 1 percent, makes the coplanar line a strong competitor in the field of liquid level measurement. The research began with a theoretical approach, and used lines machined from an Aluminium plate for characteristic impedance measurement. An empirical relation between the gap width, the line thickness, and the characteristic impedance of the line is presented. To assist with the design of the sensor, a lumped capacitance model of the line was developed. Various geometries were tested, and modified until a near linear response to water level was achieved. An advanced engineering model of the level sensor has been developed, which incorporates a stable digital output display, user calibration from the line's end points, and temperature compensation. A T-shaped line, which concentrates the field around its open end, was used for other applications such as, evaporation monitoring, measurement of slurry settlement, and to observe the effect of acids, bases, and salts in water. Various applications of the different coplanar line designs are proposed.

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Janse, van Rensburg Christo. "A SiGe BiCMOS LNA for mm-wave applications." Diss., University of Pretoria, 2012. http://hdl.handle.net/2263/26501.

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A 5 GHz continuous unlicensed bandwidth is available at millimeter-wave (mm-wave) frequencies around 60 GHz and offers the prospect for multi gigabit wireless applications. The inherent atmospheric attenuation at 60 GHz due to oxygen absorption makes the frequency range ideal for short distance communication networks. For these mm-wave wireless networks, the low noise amplifier (LNA) is a critical subsystem determining the receiver performance i.e., the noise figure (NF) and receiver sensitivity. It however proves challenging to realise high performance mm-wave LNAs in a silicon (Si) complementary metal-oxide semiconductor (CMOS) technology. The mm-wave passive devices, specifically on-chip inductors, experience high propagation loss due to the conductivity of the Si substrate at mm-wave frequencies, degrading the performance of the LNA and subsequently the performance of the receiver architecture. The research is aimed at realising a high performance mm-wave LNA in a Si BiCMOS technology. The focal points are firstly, the fundamental understanding of the various forms of losses passive inductors experience and the techniques to address these issues, and secondly, whether the performance of mm-wave passive inductors can be improved by means of geometry optimising. An associated hypothesis is formulated, where the research outcome results in a preferred passive inductor and formulates an optimised passive inductor for mm-wave applications. The performance of the mm-wave inductor is evaluated using the quality factor (Q-factor) as a figure of merit. An increased inductor Q-factor translates to improved LNA input and output matching performance and contributes to the lowering of the LNA NF. The passive inductors are designed and simulated in a 2.5D electromagnetic (EM) simulator. The electrical characteristics of the passive structures are exported to a SPICE netlist which is included in a circuit simulator to evaluate and investigate the LNA performance. Two LNAs are designed and prototyped using the 13μ-m SiGe BiCMOS process from IBM as part of the experimental process to validate the hypothesis. One LNA implements the preferred inductor structures as a benchmark, while the second LNA, identical to the first, replaces one inductor with the optimised inductor. Experimental verification allows complete characterization of the passive inductors and the performance of the LNAs to prove the hypothesis. According to the author's knowledge, the slow-wave coplanar waveguide (S-CPW) achieves a higher Q-factor than microstrip and coplanar waveguide (CPW) transmission lines at mm-wave frequencies implemented for the 130 nm SiGe BiCMOS technology node. In literature, specific S-CPW transmission line geometry parameters have previously been investigated, but this work optimises the signal-to-ground spacing of the S-CPW transmission lines without changing the characteristic impedance of the lines. Optimising the S-CPW transmission line for 60 GHz increases the Q-factor from 38 to 50 in simulation, a 32 % improvement, and from 8 to 10 in measurements. Furthermore, replacing only one inductor in the output matching network of the LNA with the higher Q-factor inductor, improves the input and output matching performance of the LNA, resulting in a 5 dB input and output reflection coefficient improvement. Although a 5 dB improvement in matching performance is obtained, the resultant noise and gain performance show no significant improvement. The single stage LNAs achieve a simulated gain and NF of 13 dB and 5.3 dB respectively, and dissipate 6 mW from the 1.5 V supply. The LNA focused to attain high gain and a low NF, trading off linearity and as a result obtained poor 1 dB compression of -21.7 dBm. The LNA results are not state of the art but are comparable to SiGe BiCMOS LNAs presented in literature, achieving similar gain, NF and power dissipation figures. Dissertation (MEng)--University of Pretoria, 2012. Electrical, Electronic and Computer Engineering unrestricted

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Jeong, Jae Soon. "An evaluation of coplanar line for application in microwave integrated circuitry." Thesis, Monterey, California. Naval Postgraduate School, 1988. http://hdl.handle.net/10945/23213.

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Approved for public release; distribution is unlimited A general study of conductor backed coplanar waveguide is presented. The impedance (Z(0)) and effective dielectric constant (ɛ(reff)) of conductor-backed coplanar waveguide (CBCPW) have been calculated by using a variational method and the boundary point matching method. In this present work only the TEM dominant low frequency propagation mode of coplanar line has been considered. Experimental facilities are vector network analyzer (HP8409) and bench-instrument measurements. http://archive.org/details/evaluationofcopl00jeon Captain, Korean Air Force

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Chen, Qin. "Time domain dielectric microwave detection of biomolecular surface interactions with a coplanar transmission line probe /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2005. http://uclibs.org/PID/11984.

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Ambros, Martin. "Analýza přechodů vedení v pásmech milimetrových vln." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220248.

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This diploma thesis solves possibilities of transitions between waveguides and hybrid types of integrated microwave circuits. It describes the basic ways of solutions this transitions in both longitudinal and transverse as well. In thesis is also mentioned the principle of SIW technology, which is in this transitions widely used. The practical part is focused on the modeling and analysis of selected structures in CST MW Studio. Modeled structures are optimized for the lowest possible value insertion loss transition and are adapted to the characteristic impedance on 50. Selected structures are recalculated to a lower frequency band, realized and results of their simulation verified by measurements.

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Topalli, Kagan. "A Monolithic Phased Array Using Rf Mems Technology." Phd thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/2/12608436/index.pdf.

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This thesis presents a novel monolithic phased array implemented using the RF MEMS technology. The structure, which is designed at 15 GHz, consists of four linearly placed microstrip patch antennas, 3-bit distributed RF MEMS low-loss phase shifters, and a corporate feed network. The RF MEMS phase shifter employed in the system consists of three sections with a total of 28 unit cells, and it occupies an area of 22.4 mm &amp #61620 2.1 mm. The performance of the phase shifters is improved using high-Q metal-air-metal capacitors in addition to MEMS switches as loading elements on a high-impedance coplanar waveguide transmission line. The phased array is fabricated monolithically using an in-house surface micromachining process, where a 1.2-&amp #61549 m thick gold structural layer is placed on a 500-&micro m thick glass substrate with a capacitive gap of 2 &amp #61549 m. The fabrication process is simple, requires only 6 masks, and allows the implementation of various RF MEMS components on the same substrate, such as RF MEMS switches and phase shifters. The fabricated monolithic phased array occupies an area of only 6 cm &amp #61620 5 cm. The measurement results show that the phase shifter can provide nearly 20&amp #61616 /50&amp #61616 /95&amp #61616 phase shifts and their eight combinations at the expense of 1.5 dB average insertion loss at 15 GHz. The phase shifters can be actuated with 16 V, while dissipating negligible power due to its capacitive operation. It is also shown by measurements that the main beam can be steered to 4&amp #61616 and 14&amp #61616 by suitable settings of the RF MEMS phase shifters.

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El-Masri, Samir D. "Application de la méthode numérique TLM (transmission line matrix) aux ondes acoustiques et à la parole." Grenoble INPG, 1997. http://www.theses.fr/1997INPG0129.

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La plupart des theories actuelles sur la propagation des ondes acoustiques dans le conduit vocal se basent sur le principe des ondes planes (unidimensionnelles) et ne sont valables qu'aux basses frequences. Compte tenu de la difficulte posee par l'etude theorique ou experimentale des ondes acoustiques aux frequences elevees et dans des structures complexes telles que le conduit vocal, les methodes de simulation numerique sont particulierement utiles. La methode numerique tlm (transmission line matrix) a ete developpee initialement pour la simulation de la propagation des ondes electromagnetiques. Les objectifs de la these ont consiste a appliquer cette methode a la propagation des ondes acoustiques dans le conduit vocal. Apres avoir etabli les analogies necessaires entre domaines electrique et acoustique, nous avons valide systematiquement cet outil de simulation par comparaison avec la theorie pour des cavites de forme simple, avec des sources elementaires (monopolaire, dipolaire, quadripolaire). Ceci a permis de montrer que les conditions aux limites utilisees pour simuler l'espace infini sont adequates. Nous avons mis en oeuvre une methode qui permet de mettre en evidence les modes d'ordre superieur de maniere individuelle et etudie leur distribution dans des differences cavites rectangulaires et circulaires. Ce travail a ensuite ete etendu a des modelisations plus detaillees de l'acoustique dans des geometries complexes correspondants a des conduits vocaux realistes, et de participer a l'amelioration de la qualite de la synthese de parole.

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Li, Jinfeng. "Structure and optimisation of liquid crystal based phase shifter for millimetre-wave applications." Thesis, University of Cambridge, 2019. https://www.repository.cam.ac.uk/handle/1810/288407.

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The delivery of tunable millimetre-wave components at 60GHz is of research and development interests with the advent of 5G era. Among applications such as high-data-rate wireless communications, high-precision automotive radars and hand-gesture sensing, variable phase shifters are vital components for antenna arrays to steer an electromagnetic beam without mechanical movement. However, present microwave technology has limited scope in meeting more and more stringent requirements in wavefront phase control and device performance for those cutting-edge applications in the millimetre-wavelength range. Although some existing microwave switchable techniques (such as RF MEMS and solid-state p-i-n diodes) can offer ultra-fast speed for phase modulation, their binary beam-steering nature is resolution-limited and thereby degrades the beam-scanning performance. In response to this, continuously-tunable phase shifting can be realised by using tunable dielectric materials such as ferroelectric BST and liquid crystals (LCs). BST thin films can offer relatively fast switching and modest tunability. However, the increased dielectric loss beyond 10GHz impedes their implementation for higher frequency applications. By comparison, liquid crystals (LCs) have drawn attention in recent years because of their continuous tunability as well as low losses especially at millimetre-wavebands. The principle of shifting the phase continuously is based on the shape anisotropy of LC molecules for variable polarizabilities and hence tunable dielectric constants, which allows wave speed to be controlled with ease by a low-frequency field of only up to 10V. However, LC-based tunable delay lines are not well established in the frequency regime of 60GHz-90GHz because of the limited status of LC microwave technology in which most of the LC based devices have been designed for below 40GHz. It is the aim of this PhD research to bridge the gap and address future societal needs based on our group's focus and experience in developing cutting-edge LC-based agile microwave components. In this work, a liquid crystal (LC) based 0-180˚continuously-variable phase shifter is developed with insertion loss less than -4.4dB and return loss below -15dB across a wide spectrum from 54GHz to 67GHz. The device is driven by a 0-10V AC bias and structured in a novel enclosed coplanar waveguide (ECPW) including an enclosed ground plate in the design, which significantly reduces the instability due to floating effects of the transmission line. This structure screens out interference and stray modes, allowing resonance-free quasi-TEM wave propagation up to 90GHz. The tunable ECPW is optimised by competing spatial volume distribution of the millimetre-wave signal occupying lossy tunable dielectrics versus low-loss but non-tunable dielectrics and minimising the total of dielectric volumetric loss and metal surface loss for a fixed phase-tuning range. A variety of influences affecting the actual device performance are studied, experimented and optimised. Fabricated prototypes exhibit wideband low-loss performance and 0-π continuous tuning with low power consumptions and high linearity compared with the state-of-the-arts. Potentially, the ECPW-fed phased antenna array will be incorporated with advanced beam-forming algorithms to develop compact beam-steering systems of improved performances and targeted for ultra-high-data-rate wireless communications, inter-satellite communications, current road safety improvement, futuristic autonomous driving, and other smart devices such as the hand-gesture recognition.

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Janečka, Martin. "Vícevrstvá Yagiho anténa pro pásmo 60 GHz." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-220264.

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This diploma thesis deals with the design and simulation of multi-layer stacked Yagi antenna at the frequency of 60 GHz. At work are proposed and compared two ways of antenna feeding methods. Based on the results obtained, antenna is fed by substrate integrated waveguide. The proposed antenna has been optimized in terms of gain and impedance matching at the specified frequency. The correct functionality of the antenna was verified by simulation program CST MWS 2011. Simulation results were verified experimentally.

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Books on the topic "Coplanar waveguide transmission line"

Simons, Rainee. Modeling of some coplanar waveguide discontinuities. National Aeronautics and Space Administration, 1988.

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Ponchak, George E. Coplanar waveguide EEsoF MICAD macros make circuit layout easy. National Aeronautics and Space Administration, 1991.

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Simons, Rainee. Propagation characteristics of some novel coplanar waveguide transmission lines on GaAs at MM-wave frequencies. National Aeronautics and Space Administration, 1987.

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N, Simons R., and Lewis Research Center, eds. Channelized coplanar waveguide pin-diode switches. Lewis Research Center, 1989.

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White, P. H. Miniaturized coplanar transmission line and applications to microwave devices. UMIST, 1993.

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Simons, Rainee N. Coplanar Waveguide Circuits Components & Systems. Wiley-IEEE Press, 2001.

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Simons, Rainee N. Coplanar Waveguide Circuits, Components, and Systems. Wiley & Sons, Incorporated, John, 2008.

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Simons, Rainee N. Coplanar Waveguide Circuits, Components, and Systems. Wiley & Sons, Incorporated, John, 2004.

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Simons, Rainee N. Coplanar Waveguide Circuits, Components, and Systems. Wiley & Sons, Incorporated, John, 2002.

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Hinz, Robert C. Propagation characteristics of strapped coplanar waveguides. 1992.

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Book chapters on the topic "Coplanar waveguide transmission line"

Liu, Ai Qun. "Coplanar Waveguide Transmission Line." In RF MEMS Switches and Integrated Switching Circuits. Springer US, 2010. http://dx.doi.org/10.1007/978-0-387-46262-2_4.

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Nagai, Yasuhiro, Naobumi Suzuki, Keiichiro Itoh, Osamu Michikami, and Theodore Van Duzer. "Pulse Propagation in 8μm-Wide Coplanar Superconductive Transmission Line." In Advances in Superconductivity V. Springer Japan, 1993. http://dx.doi.org/10.1007/978-4-431-68305-6_266.

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Zhu, Lei. "Coplanar Waveguide (CPW) Transmission Lines." In Encyclopedia of RF and Microwave Engineering. John Wiley & Sons, Inc., 2005. http://dx.doi.org/10.1002/0471654507.eme062.

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Debnath, Pampa, and Arpan Deyasi. "Transmission Line and Its Implementation." In Contemporary Developments in High-Frequency Photonic Devices. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-8531-2.ch003.

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In unbounded media, wave propagation is supposed to be unguided. The existence of uniform plane wave is considered to be all through the space. Electromagnetic energy related with the wave stretched over a broad area. In TV and radio broadcasting, unbounded medium propagation of the wave is required. Here transmission of information is destined for one and all who may be interested. Another way of transmitting information is by guided media. Guided media acts to direct the transmission of energy from transmitter to receiver. Transmission lines are usually used in low frequency power distribution and in high frequency communications as well as in the ethernet and internet in computer networks. Two or more parallel conductors may be used to construct a transmission line, which connects source to a load. Typical transmission lines consist of coaxial line, waveguide, microstrip line, coplanar waveguide, etc. In this chapter, problems related with transmission lines are solved with the help of EM field theory and electric circuit theory.

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"Diplexer Overview." In Practical Approach to Substrate Integrated Waveguide (SIW) Diplexer. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-2084-0.ch001.

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This chapter gives an overview of the microwave diplexer, starting with a background into the radio frequency and the microwave spectrums. The chapter also covers the aims and objectives of the book, the motivation, and the diplexer design method discussed in the book. A detailed literature review into the various diplexer design and implementation approaches is also detailed in this chapter. The chapter also looks at a number of transmission line technologies that have been utilised in the implementation of microwave diplexers including slotline, stripline, coplanar waveguide, microstrip, waveguide, and the substrate integrated waveguide (SIW). The microstrip and the SIW implementations of the diplexer is reviewed in more detail, with numerous existing research examples. The chapter concludes by highlighting the emerging research and the opportunities in diplexer design introduced and established in the book.

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"Coplanar Waveguides." In Networks and Devices Using Planar Transmissions Lines. CRC Press, 2000. http://dx.doi.org/10.1201/9781420039689.ch10.

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"Transmission Line." In Practical Approach to Substrate Integrated Waveguide (SIW) Diplexer. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-2084-0.ch002.

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A transmission line (TL) is simply a medium that is capable of guiding or propagating electromagnetic energy. The transmission line stores the electric (E) and magnetic (M) energies and distributes them in space by alternating them between the two forms. This means that at any point along a TL, energy is stored in a mixture of E and M forms and, for an alternating signal at any point on the TL, converted from one form to the other as time progresses. Transmission line is usually modelled using lumped elements (i.e., inductors for magnetic energy, capacitors for electric energy, and resistors for modelling losses). The electrical characteristics of a TL such as the propagation constant, the attenuation constant, the characteristic impedance, and the distributed circuit parameters can only be determined from the knowledge of the fields surrounding the transmission line. This chapter gives a brief overview of various transmission lines, with more detailed discussions on the microstrip and the SIW.

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Ibbotson, Lem. "Coaxial line, strip line and waveguide." In The Fundamentals of Signal Transmission. Elsevier, 1999. http://dx.doi.org/10.1016/b978-034070576-6/50005-9.

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Sghir, Elmahjouby, Ahmed Errkik, and Mohamed Latrach. "A New Compact Coplanar Waveguide Stop Band Filter Based on Circular Shaped DGS for Microwave and Millimeters Wave Applications." In Advances in Computer and Electrical Engineering. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-0117-7.ch006.

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This chapter introduces an overview of coplanar technology and the general techniques and process to improve the response and characteristics of microwave components. A new circular defected ground structure (DGS) with shaped coplanar line is investigated for compact stopband filter (SBF) for microwave and millimeter wave applications. With this structure, the response of resonant element in 20 GHz exhibits the bandstop function. The proposed DGS is also modified by introducing four symmetrical slots with L-configuration in conductor line of a coplanar circuit to improve separately the stopband and passband performances. An equivalent circuit model derived for the proposed structures will be provided.

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Olyslager, Frank. "Transmission Lines For Quasi-Tem Fields." In Electromagnetic Waveguides and Transmission Lines. Oxford University PressOxford, 1999. http://dx.doi.org/10.1093/oso/9780198564508.003.0002.

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Abstract In this chapter, the transmission line equations are derived immediately from Maxwell’s curl equations. This will not be possible for all types of waveguides and under all circumstances. The discussion has to be restricted to electric wave guides and, furthermore, for these waveguides, to the fundamental propagation. By fundamental propagation is meant propagation that reduces to the classical wire interconnection picture at zero frequency, where one conductor guides the return current and where the other conductors carry the signal currents. In modal language, the fundamental propagation is propagation by the fundamental modes of the waveguide. In an electric waveguide with N + 1 conductors, there are N fundamental modes.

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Conference papers on the topic "Coplanar waveguide transmission line"

Liu, Renzhi, Xiong Chen, and Ming Yu. "An Equivalent Transmission Line Model of Temperature-Dependent Ferromagnetic Resonance Effect Based on Coplanar Waveguide." In 2024 IEEE MTT-S International Wireless Symposium (IWS). IEEE, 2024. http://dx.doi.org/10.1109/iws61525.2024.10713778.

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Kumar, Aashutosh, Maxime Colson, Richard Al Hadi, and Bora Ung. "Radio-Frequency Excitation for Quantum Sensing Based on Diamond NV Center Using Coplanar Waveguide Transmission Lines." In 2024 IEEE International Conference on Quantum Computing and Engineering (QCE). IEEE, 2024. https://doi.org/10.1109/qce60285.2024.10424.

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Perangin-Angin, Windi Kurnia, Karsten Kuhlmann, and Jürgen Rühaak. "Dielectric Waveguide as Transmission Line for R 1.8k Microcalorimeter." In 2024 Conference on Precision Electromagnetic Measurements (CPEM). IEEE, 2024. http://dx.doi.org/10.1109/cpem61406.2024.10646069.

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Manning, Lewis, Ana Robador, and James Skinner. "Temperature Humidity Bias Testing of a Wafer-Embedded Coplanar Waveguide Line up to 40 GHz." In 2024 103rd ARFTG Microwave Measurement Conference (ARFTG). IEEE, 2024. http://dx.doi.org/10.1109/arftg61196.2024.10660883.

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Fu, Jia-hui, Qun Wu, Wei Pan, and De-Fu Wang. "The research of left-handed Coplanar-waveguide transmission line." In 2009 Asia Pacific Microwave Conference - (APMC 2009). IEEE, 2009. http://dx.doi.org/10.1109/apmc.2009.5385246.

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Lim, Hong Yi, Geok Ing Ng, and Yoke Choy Leong. "Compact true time delay line with partially shielded coplanar waveguide transmission lines." In 2012 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT). IEEE, 2012. http://dx.doi.org/10.1109/rfit.2012.6401614.

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Zou, Huan, Haiyang Wang, and Pingshan Wang. "On-chip tapered transmission line transformer based on coplanar waveguide." In 2012 International Workshop on Microwave and Millimeter Wave Circuits and System Technology (MMWCST). IEEE, 2012. http://dx.doi.org/10.1109/mmwcst.2012.6238173.

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Sarafis, P., and A. G. Nassiopoulou. "Cu nanolines in coplanar waveguide transmission lines." In 2015 Joint International EUROSOI Workshop and International Conference on Ultimate Integration on Silicon (EUROSOI-ULIS). IEEE, 2015. http://dx.doi.org/10.1109/ulis.2015.7063822.

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Wu, Qiang, Li Peng, Jie Liu, et al. "Design and Optimization of a 56GHz Stripline Coplanar Waveguide Transmission Line Model." In 2021 IEEE 4th International Conference on Electronics Technology (ICET). IEEE, 2021. http://dx.doi.org/10.1109/icet51757.2021.9450941.

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Chen, Sihong, Taisong Pan, Guang Yao, Min Gao, and Yuan Lin. "High Q-factor frequency selective surfaces based on coplanar waveguide transmission line." In 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting. IEEE, 2020. http://dx.doi.org/10.1109/ieeeconf35879.2020.9330200.

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