Results 11 to 20 of about 9,979 (227)

Multifunctional Programmable Transmissive Metasurface with Phase and Amplitude Manipulation Capability. [PDF]

open access: yesAdv Sci (Weinh)
This work provides a multifunctional programmable transmissive metasurface with phase and amplitude manipulation capability in the sub‐6G band. By applying different coding strategies, the proposed metasurface can realize vortex beam generation, holographic imaging under phase coding mode, and multi‐beam forming in phase‐amplitude joint coding mode ...
Shi HT   +8 more
europepmc   +2 more sources

Design of a tunable multi-band differential LC VCO using 0.35 mu m SiGe BiCMOS technology for multi-standard wireless communication systems [PDF]

open access: yes, 2009
In this paper, an integrated 2.2-5.7GHz multi-band differential LC VCO for multi-standard wireless communication systems was designed utilizing 0.35 mu m SiGe BiCMOS technology. The topology, which combines the switching inductors and capacitors together
Bakkaloglu, Ahmet Kemal   +8 more
core   +1 more source

A High-Temperature Superconducting Bandpass Dual-Mode Filter with Tunable Relative Bandwidth and Center Frequency

open access: yesSensors, 2023
This study proposes a high-temperature superconducting (HTS) bandpass filter with a continuously tunable bandwidth and center frequency. The proposed filter combines several gallium arsenide varactors and a dual-mode resonator (DMR).
Zhaojiang Shang   +3 more
doaj   +1 more source

Compact printed multiband antenna with independent setting suitable for fixed and reconfigurable wireless communication systems [PDF]

open access: yes, 2012
This is the author's accepted manuscript. The final published article is available from the link below. Copyright @ 2012 IEEE. Personal use of this material is permitted.
Hattan F. Abutarboush   +6 more
core   +2 more sources

FREQUENCY MODULATION APPROACH BASED ON SPLIT-RING RESONATOR LOADED BY VARACTOR DIODE

open access: yesInformatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska, 2020
In the paper, an approach to frequency modulation is presented using a split-ring resonator (SRR) loaded by a varactor diode. The modulation occurs due to the continuous time variation of capacitance of the varactor diode via changing of its bias voltage
Dmytro Vovchuk   +3 more
doaj   +1 more source

A Comparative Study Between a Micromechanical Cantilever Resonator and MEMS-based Passives for Band-pass Filtering Application [PDF]

open access: yes, 2011
Over the past few years, significant growth has been observed in using MEMS based passive components in the RF microelectronics domain, especially in transceiver components.
Anirban Bhattacharya   +7 more
core   +1 more source

Microstrip Tunable Bandpass Filter with the Colinear Resonators

open access: yesInternational 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
doaj   +1 more source

Proof-of-Concept on Misalignment Compensation for 5.8-GHz-Band Reflectarray Antennas by Varactor Diodes

open access: yesIEEE 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
doaj   +1 more source

PIFA based reconfigurable multiband antenna for wireless applications [PDF]

open access: yes, 2010
Copyright @ 2010 IEEEA compact reconfigurable four bands Planar Inverted-F Antenna (PIFA) is presented for Digital Video Broadcasting - Handheld (DVB-H), Universal Mobile Telecommunications System (UMTS), Global System for Mobile Communications (GSM800 ...
AbuTarboush, HF, Nilavalan, R, Peter, T
core   +1 more source

Frequency multipliers on semiconductor diode structures

open access: yesTekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2018
Obvious advantages of the millimeter wave technology including a large information capacity, high directivity of radiation, diagnostics and spectroscopy capabilities of different environments, including the methods of electron paramagnetic resonance and ...
M. F. Karushkin
doaj   +1 more source

Home - About - Disclaimer - Privacy