Microwave And Millimeter Wave Phase Shifters Semiconductor And Delay Line Phase Sifters
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| Author | : Shiban K. Koul |
| Publisher | : Artech House on Demand |
| Total Pages | : 664 |
| Release | : 1991 |
| Genre | : Science |
| ISBN | : 9780890065853 |
This second volume of Microwave and Millimeter Wave Phase Shifters concentrates on semiconductor and delay-line phase shifters. It explains why various types of phase shifters hold potential for future phased arrays. Systematically organized and with practical design examples, the text enumerates broad criteria for the selection of all types of phase shifters for the reader's systems applications.
| Author | : Shiban K. Koul |
| Publisher | : |
| Total Pages | : |
| Release | : 1991 |
| Genre | : Microwave devices |
| ISBN | : |
| Author | : Shiban K. Koul |
| Publisher | : |
| Total Pages | : |
| Release | : 1991 |
| Genre | : Microwave devices |
| ISBN | : |
| Author | : Shiban K. Koul |
| Publisher | : |
| Total Pages | : 388 |
| Release | : 1991 |
| Genre | : Microwave devices |
| ISBN | : 9780890063194 |
| Author | : Peter Simon Heeb |
| Publisher | : |
| Total Pages | : |
| Release | : 2016 |
| Genre | : |
| ISBN | : |
| Author | : M. L Reuss (Jr) |
| Publisher | : |
| Total Pages | : 14 |
| Release | : 1982 |
| Genre | : |
| ISBN | : |
In the microwave region of the electromagnetic spectrum, electronically controllable ferrite phase shifters have demonstrated their value as components and as control elements for switches and attenuators. As the need for control components operating in the lower millimeter wave region increases, it is a reasonable approach to scale successful microwave ferrite configurations into the lower millimeter wave region (30 GHz to 140 GHz). However, many problems are encountered when attempting to scale efficient microwave ferrite configurations, particularly latching ferrite configurations, into the millimeter wave region. It is the objective of this report to review several ferrite configurations with the intent that consideration of these configurations may stimulate development of practical millimeter wave configurations. Ferrite phase shifter configurations that will be the subject of comment include the toroidal (dual slab), dual mode, Bush-Reggia-Spencer, and single slab configurations. Comments are also presented on a circulator used as a phase shifter. (Author).
| Author | : M. M. Chrepta |
| Publisher | : |
| Total Pages | : 19 |
| Release | : 1971 |
| Genre | : |
| ISBN | : |
In this report an analysis of the parameters of a dielectric semiconductor waveguide is given, and the analysis and design of a bulk semiconductor phase shifter is presented. Calculations and experiments have been carried out at frequencies in the Ku-Band. These concepts are applicable not only at this wavelength but even more so in the millimeter and submillimeter regions of the spectrum. The mechanism of the phase shift device is discussed and analyzed with a technique similar to that used in integrated optics. (Author).
| Author | : Balaji Lakshminarayanan |
| Publisher | : |
| Total Pages | : |
| Release | : 2005 |
| Genre | : |
| ISBN | : |
ABSTRACT: A true time delay multi-bit MEMS phase shifter topology based on impedance-matched slow-wave CPW sections on a 500 m thick quartz substrate is presented. Design equations based on the approximate model for a distributed line is derived and used in optimization of the unit cell parameters. A semi-lumped model for the unit cell is derived and its equivalent circuit parameters are extracted from measurement and EM simulation data. This unit cell model can be cascaded to accurately predict N-section phase shifter performance. Experimental data for a 4.6mm long 4-bit device shows a maximum phase error of 5; and S11 less than -21dB from 1-50GHz. A reconfigurable MEMS transmission line based on cascaded capacitors and slow-wave sections has been developed to provide independent Zo - and -tuning. In the Zo-mode of operation, a 7.4mm long line provides Zo-tuning from 52 to 4 (+/-2;) with constant phase between the states through 50GHz.
| Author | : 林毓軒 |
| Publisher | : |
| Total Pages | : |
| Release | : 2018 |
| Genre | : |
| ISBN | : |
| Author | : Jinfeng LI |
| Publisher | : |
| Total Pages | : 0 |
| Release | : 2023 |
| Genre | : |
| ISBN | : |
The growing interest in the modulation of phase (and amplitude) of microwave and millimeter-wave signals has been spurred by the emerging 5G/6G phased-array beam-steering applications for which liquid crystal is one of the enabling technologies. A problematic journal paper on liquid crystals-based coplanar waveguide phase shifters is scrutinized in this letter to urge readers and a wider academic community's attention. Specifically, concerns have come up about the usefulness, effectiveness, and accuracy of the simulation-only work that Jun-Seok Ma et al published recently at J. Phys. D: Appl. Phys. 55 095106, entitled 'liquid-crystal-based floating-electrode-free coplanar waveguide phase shifter with an additional liquid-crystal layer for 28 GHz applications'. With no devices fabricated and no experimental measurements, the simulation results and conclusions are subject to fundamental yet important errors (significant overestimations) that can mislead readers as well as researchers truly working in the field of liquid crystals-based tunable microwave and millimetre-wave devices. The lack of experimental data means that the validity and reliability of the simulation results cannot be fully assessed. A reflection on other drawbacks of the article is also elaborated in this letter.
