Results 11 to 20 of about 29,052 (301)
Photonics Based Microwave Hybrid Coupler With Tunable Coupling Ratio and Phase Difference
IEEE Photonics Journal, 2018 A new microwave hybrid coupler that solves the problems of limited bandwidth and reconfigurability in conventional couplers, is presented. It is based on a bi-directional operating optical phase modulator and an optical signal processor to control the ...
Yanliang Zhang +4 more
doaj +1 more source
Time-Delay Multiplexing of Two Beams in a Terahertz Imaging Radar [PDF]
, 2010 We demonstrate a time-delay multiplexing technique that doubles the frame rate of a 660–690-GHz imaging radar with minimal additional instrument complexity.
Bryllert, Tomas +5 more
core +1 more source
IEEE Access, 2017 A novel millimeter-wave (mm-wave) 90° phase-compensated hybrid coupler using the ridge-gap waveguide (RGW) technology is studied and developed. The coupler is low-loss at mm-wave frequency bands, whereas using conventional transmission lines, such
Mohammadmahdi Farahani +4 more
doaj +1 more source
Hybrid-cascade Coupled-Line Phasers for High-resolution Radio-Analog Signal Processing [PDF]
, 2014 A hybrid-cascade (HC) coupled-line phaser configuration is presented to synthesize enhanced group delay responses for high-resolution Radio-Analog Signal Processing (R-ASP).
Caloz +6 more
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
Ultracompact monolithic integration of balanced, polarization diversity photodetectors for coherent lightwave receivers [PDF]
, 1992 The authors have monolithically integrated an optical front-end on InP for balanced, polarization-diversity coherent lightwave reception which is only 1.3-mm long. Low on-chip insertion loss (
Andreadakis, N. C. +10 more
core +1 more source
MINIATURIZED BROADBAND QUADRATURE HYBRID COUPLER WITH PHASE SHIFTER [PDF]
Progress In Electromagnetics Research Letters, 2021 A 3-dB compact hybrid coupler is presented in this paper in an ultra-wideband frequency range from 1.5 GHz to 3.2 GHz with 90˚ phase deference between the two output ports. The proposed coupler is formed by two notched elliptically shaped microstrip lines and four phase shifters, which are broadside coupled through an elliptically shaped slot.
Soodmand, Soheyl +2 more
openaire +2 more sources
IEEE Access, 2020 An intermodulation generator is designed and presented with integration of a hybrid coupler and two identical Schottky diodes (i.e., D1 and D2). The connection polarities of D1 and D2 to the direct and coupled ports of hybrid coupler are opposite for its
Yue Yin +4 more
doaj +1 more source
Dual-Port RHCP Compact Antenna at 868 MHz Using a 120° Hybrid Coupler
IEEE Open Journal of Antennas and Propagation, 2023 This work presents the design of a compact dual-port circularly polarized antenna based on the new coupler topology. The antenna can radiate a right-hand circular polarization (RHCP) in two opposite directions depending on the input port. In the proposed
Fabien Ferrero, Le Huy Trinh
doaj +1 more source
IEEE Access, 2023 This research proposes a quadruple-cluster leaf-shaped metasurface (MTS)-based circularly-polarized (CP) stacked-patch antenna array with hybrid coupler feed network for sub-6 GHz 5G applications.
Nathapat Supreeyatitikul +4 more
doaj +1 more source