Results 21 to 30 of about 8,991 (205)
Achromatic optical phase shifter-modulator [PDF]
, 2018 We propose and demonstrate, theoretically and experimentally, a novel achromatic optical phase shifter-modulator based on a frequency-domain optical delay line configured to maintain zero group delay as variable phase delay is generated by means of ...
Zvyagin, A.V., Sampson, David
core +3 more sources
SIW Butler Matrix with Modified Hybrid Coupler for Slot Antenna Array
IEEE Access, 2016 This paper presents a substrate integrated waveguide Butler matrix with a modified hybrid coupler, operating from 28 to 32 GHz. The modified hybrid coupler is realized by using 90° hybrid coupler followed by a -45° compensating phase ...
Qing-Ling Yang +4 more
doaj +1 more source
QUICK-ACTING, CONTROLLABLE PHASE SHIFTER FOR PHASE ANGLE ADJUSTMENT IN RADIO SIGNALS [PDF]
Radio Physics and Radio Astronomy, 2022 Subject and Purpose. The phase shifters intended for controlling the phase of radio signals are widely used in ultra-high frequency technology, communication systems, radar, and a variety of measuring and special-purpose radio equipment.
I. M. Mytsenko, O. M. Roenko
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Frequency Independent Phase Shifter [PDF]
, 2006 A new simple and low cost frequency independent phase shifter is presented. The design is based on the simple op-amp phase shifter with programmable floating resistor and programmable capacitor.
Munir A. Al-Absi, Al-Absi, Munir
core +1 more source
1.4 GHz Low-Cost PIN Diode Phase Shifter for
IEEE Access, 2019 A 1.4 GHz 4-bit positive intrinsic negative (PIN) diode phase shifter with compact reflective loads for an L-band soil moisture measuring radiometer phased array antenna has been successfully designed.
Kim Tuyen Trinh +3 more
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A Fixed Miniaturization 90° Phase Shifter for VHF-Band High-Power Applications
IEEE Access, 2019 This paper presents a novel miniaturization 90° phase shifter using parallel coupled inductors and capacitors. The size reduction is achieved by replacing the quarter-wavelength transmission lines in a conventional fixed 90 degrees phase shifter ...
Naibo Zhang +3 more
doaj +1 more source
Simulation and Fabrication of Broadband Tunable Phase Shifter Based on Transmission Line Metamaterial [PDF]
Radioengineering, 2019 This paper presents a kind of broadband, low-loss tunable phase shifter based on transmission line metamaterial. An inherent high-pass backward-wave response property of a left-handed metamaterial based on coplanar waveguide (CPW) transmission line was ...
S. Sheng, H. X. Chen, J. Wen, H. R. Liu
doaj
Control Scheme of Phase-Shifter for Photon Energy Scan
Photonics, 2022 Variable gap undulator widely used in X-ray free-electron laser (XFEL) enables the photon energy scan by changing its gap. A phase-shifter should be incorporated to compensate for the phase mismatch between the electron bunches and X-ray pulses arising ...
Gyujin Kim +8 more
doaj +1 more source
Ripple Suppression in Broadband Microwave Photonic Phase Shifter Frequency Response
Applied Sciences, 2018 This paper presents a detailed investigation on the cause of ripples in the frequency response of a microwave photonic phase shifter implemented using a 90° hybrid coupler.
Weicheng Xia +6 more
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Intensity optimization of x-ray free-electron laser by using phase shifters
Physical Review Accelerators and Beams, 2020 This paper presents a method that uses a gap scan of the phase shifter to optimize the intensity of a free-electron laser (FEL) by matching its phase with that of the electron beam.
Chi Hyun Shim +5 more
doaj +1 more source