Compact 28 GHz Folded Butler Matrix Using Low-Temperature Co-fired Ceramics by Seunggoo Nam, Sehwan Choi, Jongin Ryu, Jaeyoung Lee

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Two-Tone Excited Hybrid-Coupler-Based Intermodulation Generator for High-Isolation Wireless Sensing Applications by Yue Yin, Hao-Bo Qi, Rong-Yao Wang, Tung Ngo, Hao Zhang

Subjects: “…Hybrid coupler…”
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Broadband Transmit/Receive Switch for 3T and 7T Magnetic Resonance Imaging by Ashraf Abuelhaija, Gameel Saleh, Sanaa Salama, Mohammed Hamdan

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Design of an Active Integrated Antenna with Compact Image Rejection Mixer and Spurious Passbands Suppression of Antenna by Ali Reza Hazeri, Ali Reza Kashaninia

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A Novel Circular Reconfigurable Metasurface-Based Compact UWB Hybrid Coupler for Ku-Band Applications by Mohamed Atef Abbas, Mehmet Faruk Cengiz, A. M. M. A. Allam, Diaa E. Fawzy, Hadia M. Elhennawy, Mohamed Fathy Abo Sree

Subjects: “…3 dB hybrid coupler…”
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CP Antenna with 2 × 4 Hybrid Coupler for Wireless Sensing and Hybrid RF Solar Energy Harvesting by Irfan Mujahidin, Akio Kitagawa

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A D-band SPST switch using parallel-stripline swap with defected ground structure by Luo, Jiang, He, Jin, Apriyana, Alit, Feng, Guangyin, Huang, Qijun

Subjects: “…Parallel-stripline Swap Hybrid Coupler…”
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Simple and All-Optical In-Phase and Quadrature Phase Generation Techniques by Chongjia Huang, Chirappanath B. Albert, Erwin H. W. Chan

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A Circularly Polarized Microstrip Antenna with Dual Circular Polarization Using a 90° Hybrid Coupler and Proximity-Coupled Feeding for LTE 43 5G Applications by Atyaf H. Mohammed, Falih M. Alnahwi, Yasir I. A. Al-Yasir

Subjects: “…3 dB hybrid coupler…”
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Behavioral Modeling of a C-Band Ring Hybrid Coupler Using Artificial Neural Networks by E. Demircioglu, M. H. Sazli

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Analysis Method for a Multi-Section Rat-Race Hybrid Coupler Using Microstrip Lines by Young Kim

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Pattern Diversity Antenna for 5G-NR Application Based on Closely-Spaced Semi-Circular Slots by Youngje Sung

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A Narrow Beam Steering Antenna Array for Indoor Positioning Systems Based on Wireless Sensor Network by Duyen Bui Thi, Thao Hoang Thi Phuong

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Optimal Adjacent Output Phase Difference Assignments in One-Dimensional Parallel Switching Matrices With Four Beams by Shengjia Wu, Jiro Hirokawa, Takashi Tomura, Nelson J. G. Fonseca

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Ultra-Wideband Compact Millimeter-Wave Printed Ridge Gap Waveguide Directional Couplers for 5G Applications by Mohamed Mamdouh M. Ali, Osama M. Haraz, Islam Afifi, Abdel-Razik Sebak, Tayeb A. Denidni

Subjects: “…Hybrid coupler…”
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Design and Implementation of Wideband Monopulse Comparator Based on Inverted-Microstrip Gap Waveguide Technology by Zahra Akhoondmahdi, Ahmad Bakhtafrouz

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Low-Profile Wideband Solar-Cell-Integrated Circularly Polarized CubeSat Antenna for the Internet of Space Things by Heesu Wang, Yong Bae Park, Ikmo Park

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1 × 2 Switchable Dual-Mode Optical 90° Hybrid Device Based on Thermo-Optic Phase Shifters and 2 × 2 MMI Couplers on SOI Platform by Hai Ta Duy, Duy Nguyen Thi Hang, Thanh Thuy Tran, Nguyen Do Hoang Khoi, Cuong Chu, Hieu Nguyen, Truong C Dung

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Feed system tracking receive/transmit shaped Cassegrain antenna C/K bands by Lyudmila N. Kozlova, Aleksandr E. Korovkin, Dmitriy Ya. Razdorkin, Natalia V. Tokareva

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