Results 61 to 70 of about 5,321 (175)
IET Microwaves, Antennas & Propagation, 2021 Herein, a dual‐band bandpass filter with bandwidth tuning and constant bandwidth centre frequency tuning is presented, where the first and second bands are, respectively, of two and three modes.
Shriman Narayana +2 more
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Advanced Science, Volume 13, Issue 58, 19 October 2026.Recent advances in metasurface‐enabled low‐observable technologies are reviewed from the perspective of cross‐scale material–structure synergy. Electromagnetic, thermal, optical, and acoustic stealth are highlighted together with dynamic tuning, programmable coding, data‐driven inverse design, artificial intelligence, multispectral compatibility, and ...
Shuhao Wang +5 more
wiley +1 more source
Nano Select, Volume 7, Issue 10, October 2026.Thin‐film ferroelectric microcapacitors are analyzed using full‐wave electromagnetic simulations to establish design rules linking material properties, geometry, and electrical performance. The relationships among ferroelectric permittivity, film thickness, dielectric tunability, and coplanar capacitor geometry are established.
Viktoriia E. Babicheva, Edl Schamiloglu
wiley +1 more source
Heterostructure Barrier Varactor Multipliers
, 1998 We describe the Heterostructure Barrier Varactor (HBV) diode and its application in frequency multipliers. Different varactor models are presented that easily can be used in large signal simulations.
Stake, Jan, +2 more
core +1 more source
Methodology for Harmonic Distortion Characterization and Modelling of GaN HEMT Varactors
InstrumentsThe bias-dependent capacitance of varactors can introduce harmonic distortion into the circuits where they are utilized. A gate capacitance model valid through inversion–depletion has been presented for GaN HEMT varactors in the drive for their ...
Loukas Chevas +8 more
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Nanophotonics, Volume 15, Issue 17, 11 September 2026.This work constructs a radio‐frequency front‐end‐free hybrid code‐division and space‐division‐multiplexing wireless communication system built on programmable space‐time‐coding metasurfaces. Orthogonal pseudo‐random codes reliably separate overlapped multistream signals that share identical frequency, time, and spatial resources.
Yuzhen Chen +3 more
wiley +1 more source
Varactor diode assembly with low parasitic reactances [PDF]
, 1975 Development of varactor diode assembly overcomes parasitic reactances of conventional varactor packages. In specially constructed assembly very high idler-frequency to signal-frequency ratios are used to obtain low-noise operation over maximum ...
Dickens, L. E.
core
Electronically Reconfigurable Varactor-Loaded HMSIW Bandpass Filter
, 2018 A varactor-loaded half-mode substrate integrated waveguide (HMSIW) reconfigurable bandpass filter (BPF) is proposed in this paper. The proposed BPF is composed of complementary split-ring resonators (CSRRs) and varactors. Meanwhile, a nonmetalized via is
Jing-Pan Song +3 more
core +1 more source
Varactor tuned dual-band Wilkinson power divider
, 2009 In this paper varactor tuned dual-band Wilkinson power divider for dual band applications is presented. A new power divider circuit for dual-band operation was modified by adding varactor diodes as tunable elements.
Budimir, D., Draskovic, D.
core
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