Results 1 to 10 of about 9,725 (189)
Enhancing Linearity in Parallel-Plate MEMS Varactors through Repulsive Actuation
Micro, 2023 This paper presents a new MEMS varactor that uses repulsive actuation to achieve an ultra-linear capacitance-to-voltage response. The approach proposed involves actuating the moveable electrode away from the fixed electrode, instead of the conventional ...
Roufaida Bensalem +4 more
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IET Circuits, Devices and Systems, 2021 This study presents a 4.6–12.8 GHz injection‐locked frequency divider (ILFD) based on modified varactor‐less Colpitts oscillator topology. A modified Colpitts ILFD is proposed to improve the LR and reduces power consumption, simultaneously.
Zhen Li +5 more
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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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Modeling the Resonant Behavior of Continuously Reconfigurable FSS Based on Four Arms Star Geometry
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2020 A modeling of the resonant behavior of a continuously reconfigurable frequency selective surface, FSS, is described in this paper. The FSS is based on four arms star geometry and its reconfigurability is achieved by the use of varactors.
Alfredo Gomes Neto +5 more
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A Low-Power Tunable Frequency Selective Surface for Multiplexed Remote Sensing
IEEE Access, 2021 In this interdisciplinary work, a low-power varactor-tunable frequency selective surface is presented for use with a multiplexed remote sensor system.
Ronald P. Jenkins +6 more
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Recovering Suppressed Resonance Frequency by Bias Lines in Reconfigurable FSS
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2021 In reconfigurable frequency selective surface, FSS, bias lines can suppress a resonant frequency. This is a disadvantage, as it reduces a FSS potential application. In this paper, a procedure to recover the suppressed resonant frequency is described.
Alfredo Gomes Neto +4 more
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Reconfigurable metasurface emitters
Engineering Reports, 2022 In this article, we propose a reconfigurable metasurface emitter (MSE) with beam shaping capability without using any phase shifter or a superstrate. MSEs consist of repeating radiative inclusions (unit cells) distributed on a surface.
Pooyan Pahlavan, Mohammad Neshat
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IEEE Access, 2021 Membrane reflectarray antennas with flexible support structures realize low weight and low stowage volume. However, deformation of the reflectarray membrane generally degrades antenna gain. We propose electrical misalignment compensation for 5.8-GHz-band
Keisuke Omoto +2 more
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A minimum power VCO design using an IMOS varactor for portable RF circuits
Engineering and Applied Science Research, 2019 This paper presents a wide tuning range voltage-controlled oscillator (VCO) circuit in 180 nm CMOS technology using an inversion mode MOSFET (IMOS) varactor in delay stages.
Vivek Jangra, Manoj Kumar
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Performance and operation of stressed dual gap RF MEMS varactors
Journal of Telecommunications and Information Technology, 2023 The design, fabrication and measurement of a continuously tunable RF MEMS capacitor is described. The capacitor’s dual gap height architecture allows for electrostatic tuning with low resistive loss and a large tuning range.
Greg McFeetors, Michal Okoniewski
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