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September 1985
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7 Reads
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18 Citations
IEEE Transactions on Antennas and Propagation
A suspended patch antenna electromagnetically excited by an inverted microstrip line has been studied based on a full-wave transmission line analysis in conjunction with a microwave network theory. The input impedance calculated has been compared with measured data.
July 1985
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7 Reads
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45 Citations
IEEE Transactions on Microwave Theory and Techniques
A general method for the analysis of multilayer interconnection lines is presented. This method is capable of predicting frequency dispersion of the transmission-line parameters and is useful for accurately investigating the coupling phenomena among adjacent lines and the input and output impedance relations.
April 1985
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5 Reads
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9 Citations
IEEE Transactions on Microwave Theory and Techniques
An analysis of a realistic model of distributed lMPATT structures is described. Wave equations are solved with all losses included. The results show that net gain is produced at frequencies just above the avalanche resonance, while the propagation becomes slow at high frequencies. The results compare favorably with experiment.
June 1984
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5 Reads
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10 Citations
IEEE MTT-S International Microwave Symposium digest. IEEE MTT-S International Microwave Symposium
An analysis of a realistic model of distributed lMPATT structures is described. Wave equations are solved with all losses included. The results show that net gain is produced at frequencies just above the avalanche resonance, while the propagation becomes slow at high frequencies. The results compare favorably with experiment.
January 1984
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2 Reads
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4 Citations
International Journal of Infrared and Millimeter Waves
A Schottky contact variable phase shifter constructed on either uniformly or periodically doped GaAs substrate is discussed in details. The device can operate at millimeter-wave frequencies with reasonably low attenuation.
July 1983
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28 Reads
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122 Citations
IEEE Transactions on Microwave Theory and Techniques
The slow-wave characteristics of an MIS coplanar waveguide are analyzed using two diferent full-wave methods: mode-matching and spectral-domain technique. The theoretical results obtained with them and the experimental values are in good agreement. Several important features of the MIS coplanar waveguide are presented along with some design criteria.
June 1983
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8 Reads
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20 Citations
IEEE Transactions on Microwave Theory and Techniques
A metal-insulator-semiconductor (MIS) coplanar waveguide with periodically doped substrate is described. An efficient numerical method is introduced in order to obtain the propagation constants and the characteristic impedances of the constituent sections of each period. Using the results, the characteristic of the periodic MIS coplanar waveguide is analyzed by Floquet's theorem. The theoretical study shows reduction of attenuation and enhancement of the slow-wave factor at certain frequencies, compared to the uniform MIS coplanar waveguide. This structure is experimentally simulated and shows good agreement theory. Copyright © 1983 by The Institute of Electrical and Electronics Engineers, Inc.
February 1983
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8 Reads
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8 Citations
A metal-insulator-semiconductor periodic coplanar waveguide is described. The propagation constants and the characteristic impedances of each section are calculated by the spectral-domain method, and overall propagation characteristics are estimated by the theory of periodic structure. The line should be useful for monolithic microwave integrated circuits.
February 1982
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9 Reads
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29 Citations
Slow-wave characteristics of a coplanar waveguide with substrate resistivity are analysed using the mode-matching technique. This waveguide is suitable for microwave monolithic integrated circuits because of its coplanar configuration. Numerical results are presented and compared with an experimental measurement in the literature.
... In 1976, Dieter et al. proposed a SW-TL based on Schottky microstrip line, which establishes a Schottky barrier layer near the conductor of the transmission signal with frequency-dependent characteristics to achieve slow-wave effect [7] . In 1977, Hasegawa et al. designed a coplanar stripline SW-TL based on MIS and Schottky barrier using GaAs dielectric plate, and analyzed the electromagnetic characteristics of the transmission line [8] . In 1983, Yoshiro et al. designed MIS SW-TL by controlling the doping medium. ...
July 1983
IEEE Transactions on Microwave Theory and Techniques
... The research works carried out by the past on distributed active semiconductor devices for the realization of high frequency RF power sources have mainly concerned the distributed impact ionization and avalanche transit time (DIMPATT) diodes. Theoretical modeling of increasing accuracy have been proposed [7][8][9]. They were based on linear and non-linear, analytical and transmission line modeling. ...
June 1984
IEEE MTT-S International Microwave Symposium digest. IEEE MTT-S International Microwave Symposium
... I N RECENT years, the goal of achieving control of the dispersion property of electromagnetic (EM) waves has stimulated considerable research interests in artificial periodic subwavelength structures, such as slow wave devices [1], [2], [3], [4], metamaterials [5], [6], [7], metasurfaces [8], [9], [10], and spoof surface plasmon polariton (SPP) structures [11], [12], [13]. Among these, spoof SPPs, as a kind of special surface waves, are proposed to mimic the behaviors and merits of natural SPPs in an optical regime. ...
June 1983
IEEE Transactions on Microwave Theory and Techniques
... It can be realized by periodic variations of either materials properties or boundaries. It is true that some work has been conducted in relation with the former method, especially through semiconductor periodical doping as in [107] (Figure 1.22(a)). However, the latter solution is adopted in most cases for its simpler practical implementation. ...
February 1983
... T O DATE, many studies into reducing the size of microwave components have been made by using slow-wave structures made of ferromagnetic substrate, ferromagnetic semiconductor substrate, and metal-insulator-semiconductor (MIS) [1]- [3]. Also, there have been some reports of miniaturization based on curving conventional transmission lines into microstrip and coplanar meander lines [4]. ...
February 1982
... The Green's functions formulated for the area being analyzed are universal and applied to various microstripstrip-slot structures. The generalized analysis and design technique for multilayer components based on combination of spectral approach (using immittance matrix) and standard CAD methods is described in [3]- [6]. The interest of researchers in multi-layer planar structures, including DGS-structures (defected ground structure), does not weaken, on their basis, differential bandpass filters, directional coupler and vertical transitions are designed [7]- [9], microwave bandpass filter in a triplet configuration with a frequency-dependent crosscoupling [10], two types of trisection bandpass filters (BPF) with a mixed cross-coupling [11], symmetric trisection bandpass filter with reflection-type half-wave resonators [12]. ...
July 1985
IEEE Transactions on Microwave Theory and Techniques
... Therefore, size reduction or compactness has become the key consideration in antenna design for miniature wireless communication terminals. Many techniques have been proposed to effectively reduce the size of microstrip antennas [7,18,27]. The most well-known methods, which depend upon modifying the patch geometry to reduce the resonant frequency, are slotting on the patch and ground [7], loading a shorting-pin between the patch and the ground plane [18] and using an inverted patch [27]. ...
September 1985
IEEE Transactions on Antennas and Propagation
