Results 21 to 30 of about 3,949,769 (293)

1.4 GHz Low-Cost PIN Diode Phase Shifter for ${L}$ -Band Radiometer Antenna

open access: yesIEEE 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
doaj   +1 more source

Scanned microstrip arrays using simple integrated ferrite phase shifters [PDF]

open access: yes, 2000
A phase-steered microstrip antenna array is presented, suitable for application as a mobile vehicle satellite terminal. Phase shifters are implemented on a hybrid dielectric-ferrite substrate, and use is made of the phase transition near the cut-off ...
Langley, Richard J.   +2 more
core   +1 more source

QUICK-ACTING, CONTROLLABLE PHASE SHIFTER FOR PHASE ANGLE ADJUSTMENT IN RADIO SIGNALS [PDF]

open access: yesRadio 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
doaj   +1 more source

Simulation and Fabrication of Broadband Tunable Phase Shifter Based on Transmission Line Metamaterial [PDF]

open access: yesRadioengineering, 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  

A Fixed Miniaturization 90° Phase Shifter for VHF-Band High-Power Applications

open access: yesIEEE 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

Control Scheme of Phase-Shifter for Photon Energy Scan

open access: yesPhotonics, 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

open access: yesApplied 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
doaj   +1 more source

Intensity optimization of x-ray free-electron laser by using phase shifters

open access: yesPhysical 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

Co-Design of Integrated Microwave Amplifier and Phase Shifter Using Reflection-Type Input Matching Networks for Compact MIMO Systems

open access: yesApplied Sciences
This paper presents a co-design approach for a microwave amplifier–phase shifter that integrates an arbitrary termination impedance reflection-type phase shifter as the input matching network of a microwave transistor.
Palaystint Thorng   +3 more
doaj   +1 more source

Fixed field phase shifters for a multipass recirculating superconducting proton linac

open access: yesPhysical Review Accelerators and Beams, 2021
The multi-pass recirculating proton linac can significantly improve the usage efficiency of rf superconducting cavities by accelerating the proton beam through the same cavity multiple times. However, in order to achieve acceleration for different energy
Ji Qiang, Lucas Brouwer, Reed Teyber
doaj   +1 more source

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