Results 11 to 20 of about 4,662 (208)
Design of Pattern Reconfigurable Patch Antenna Array Based on Reflective Phase-Shifter
International Journal of Antennas and Propagation, 2022 A circularly polarized (CP) broadside antenna array with a continuously adjustable beam is proposed and implemented. First, a reflection phase shifter with varactor diodes loaded on two output terminals of a branch directional coupler is realized.
Yuqiu Shang +4 more
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Crystals, 2022 Lately, metasurface has become an essential and promising component in implementing Intelligent Reflecting Surface (IRS) for 5G and 6G. A novel method that simplifies the ability to reconfigure the metasurface is presented in this paper.
David Rotshild +6 more
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Nanophotonics, 2021 We propose an ultrathin reconfigurable Mach–Zehnder interferometer (MZI) for realizing dynamic frequency and amplitude modulations of spoof surface plasmon (SSP) signal.
Cui Wen Yi +3 more
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An Electronically-Tunable, Flexible, and Transparent Antenna With Unidirectional Radiation Pattern
IEEE Access, 2021 In this paper, a frequency reconfigurable, conformal, durable, optically transparent, and unidirectional antenna design is demonstrated for the first time.
Abu Sadat Md. Sayem +4 more
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IEEE Access, 2020 Recently, much attention has been paid to beams carrying orbital angular momentum (OAM) for radio communication, which faces a great challenge of dynamic generation of OAM with different topological charges.
Kai Guo +3 more
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Microstrip Tunable Bandpass Filter with the Colinear Resonators
International Journal of Antennas and Propagation, 2013 This paper presents the lumped element circuit and transmission line equivalent circuit for a varactor-tuned bandpass filter. The filter consists of transmission lines, fixed capacitors, and a varactor diode.
Z. P. Wang +3 more
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Advanced Electromagnetics, 2018 This paper presents compact UWB cylindrical dielectric resonator antenna with reconfigurable band notch capability using single varactor diode. Theoretical results are achieved for the design with the range of frequencies 4-10.6 GHz.
A. S. Elkorany, S. A. Saad, D. A. Saleeb
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IEEE Access, 2023 A novel metasurface reflector unit cell based on two coupled resonators is proposed and demonstrated for real-time reconfigurable beamforming in the X-band (8-12 GHz). The unit cell is composed of a split-ring resonator (SRR) with tunable capacitance and
Mohamed K. Emara +4 more
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Parametric Amplification/Mixing Using the Varactor Diode
Active and Passive Electronic Components, 1996 This paper deals with the large-signal analysis of parametric amplification/mixing using reverse biased p-n junction varactor diodes. Expressions are obtained for the current components of the parametric amplification/mixing.
Muhammad Taher Abuelma'atti
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Harmonic Generation by Nondegenerate P-N Junction Varactor Diodes
Active and Passive Electronic Components, 1997 This paper deals with the large-signal analysis of nondegenerate p-n junction varactor diodes. Expressions are obtained for the harmonics of the varactor diode current when driven by a sinusoidal voltage signal. The special case of relatively small input
Muhammad Taher Abuelma'atti
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