Results 111 to 120 of about 518,836 (208)
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Monolithic dual-gate GaAs FET digital phase shifter
IEEE Transactions on Electron Devices, 1982The design, fabrication, and characterization of a fully monolithic FET digital phase-shifter circuit is described. The circuit is designed around a unique dual-gate FET structure Operating as a switchable single-pole, double-throw amplifier. Each 2.5 × 3.0-mm chip has one bit (e.g., 22.5°, 90°, etc.) of phase control.
J.L. Vorhaus, R.A. Pucel, Y. Tajima
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Optical control of a digital phase shifter
IEEE International Digest on Microwave Symposium, 2002A method for the optical control of digital phase shifters which significantly reduces the number of control lines required is described. The technique uses a simple cost-effective light-emitting diode (LED) source along with a MESFET detector and an A/D converter to generate the digital phase shifter command.
W.D. Jemison +5 more
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A digital phase shifter for multiple pulse NMR
Review of Scientific Instruments, 1990An eight bit digital phase shifter is described which is suitable for multiple pulse NMR of solids in terms of settling time (≂2 μs) and phase resolution (1.406°). The unit incorporates an 8-bit Merrimac digital phase shifter model PSDW-84-1, and an amplification-damping-pulse shaping circuit to solve the problem of variable attenuation as a function ...
B. C. Gerstein +4 more
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IEEE transactions on microwave theory and techniques, 2023
This article presents a design method for 5-bit digital phase shifter (PS) by using the phase-tuning property of open-/short-circuit microstrip line-loaded slot line structure.
F. Liu +5 more
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This article presents a design method for 5-bit digital phase shifter (PS) by using the phase-tuning property of open-/short-circuit microstrip line-loaded slot line structure.
F. Liu +5 more
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X band 6-bit Digital Phase Shifter GaAs MMIC Design for T/R Modules
2022 International Conference for Advancement in Technology (ICONAT), 2022Design and measured results of X band 6-bit digital phase shifter MMIC is presented in this paper. This phase shifter is designed in the frequency range of 8.5-10.5GHz with phase resolution of 5.6° The design is based on a GaAs Enhancement/Depletion ...
K. S. Kumar, Anbarasan V, K. S, N. H
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A 60-GHz Variable-Gain Phase Shifter With Particular-Sized Digital-RF Cells
IEEE transactions on microwave theory and techniques, 2022A 60-GHz variable-gain active phase shifter using particular-sized digital-RF cells is proposed, which is fabricated using a 65-nm CMOS process. The phase shifter consists of an input buffer, an $I/Q$ generator, and vector-summing amplifiers with ...
Eun-Taek Sung, Cheol So, Songcheol Hong
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Digitally Controlled RF Phase Shifter
2020 IEEE 15th International Conference on Advanced Trends in Radioelectronics, Telecommunications and Computer Engineering (TCSET), 2020In this work, the characteristics of known radiofrequency (RF) phase shifter varieties were analyzed, their advantages and disadvantages were identified. Based on the performed analysis, we offer a digitally controlled RF phase shifter, which allows changing the initial phase of the radio frequency oscillation using a computer program.
Ivan Horbatyi +3 more
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High Resolution S Band 8-bit Digital Phase Shifter GaAs MMIC design
2020 IEEE International Conference for Innovation in Technology (INOCON), 2020This paper presents the design of an S band 8-bit digital Phase shifter MMIC in the frequency range of 3.0-3.6 GHz. The phase shifter is designed on a GaAs 0.25 µm E/D mode pHEMT MMIC Process. Design topology architecture for the individual bits has been
K. S. Kumar, Anbarasan V, K. S
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Applied Optics, 2020
The phase-shifting method is a simple and efficient approach to extract complex hologram information free of bias and twin-image noise. In this study, the geometric phase-shifting method is utilized for a self-interference incoherent digital holographic ...
Kihong Choi +3 more
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The phase-shifting method is a simple and efficient approach to extract complex hologram information free of bias and twin-image noise. In this study, the geometric phase-shifting method is utilized for a self-interference incoherent digital holographic ...
Kihong Choi +3 more
semanticscholar +1 more source
Ferrite Digital Phase Shifters
G-MTT Symposium Digest, 2005Recent phased array system requirements for fast switching, latching type phase shifters have prompted considerable interest in the non-reciprocal ferrite phase shifter using a toroidal geometry. The use of the toroidal geometry permits the ferrite to he permanently magnetized in the circumferential direction by passing a current pulse through the ...
D.R. Taft, J.W. Simon, J.D. Sweeney
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