Results 11 to 20 of about 40,433 (286)
Comparison of MEMS switches and PIN diodes for switched dual tuned RF coils. [PDF]
Magn Reson Med, 2018 PURPOSE: To evaluate the performance of micro-electromechanical systems (MEMS) switches against PIN diodes for switching a dual-tuned RF coil between19F and1H resonant frequencies for multi-nuclear lung imaging.
Maunder A, Rao M, Robb F, Wild JM.
europepmc +3 more sources
IEEE Access, 2023 A new adaptive frequency selective surface (AFSS) has been presented for electromagnetic (EM) shielding applications. Passive EM shields lack reconfigurability which severely limits their application.
Mohammed Abdullah Hussaini +5 more
doaj +1 more source
IEEE Access, 2020 An active reconfigurable ultra-wideband antenna exhibiting complementary frequency notched and narrowband responses is proposed in this paper. The frequency responses are achieved on a CPW fed single element printed monopole antenna loaded with a pair of
Chinmoy Saha +4 more
doaj +1 more source
Frontiers in Physics, 2021 A substrate integrated waveguide (SIW) based spoof surface plasmon polariton (SSPP) is proposed for the design of bandpass filter (BPF). The left and right edge cutoff frequencies of the passband can be easily adjusted by changing the parameters of SIW ...
Longfei Tan +4 more
doaj +1 more source
A Compact Circular Loop Inspired Frequency and Bandwidth Reconfigurable Antenna for 4G, 5G, and X- Band Applications [PDF]
Radioengineering, 2020 This paper presents a printed patch antenna design to achieve frequency and bandwidth reconfigurability. Two RF PIN diodes are simultaneously operated to achieve the multi-reconfigurability operation.
M. Rasool +4 more
doaj
4.5-/4.9-GHz-Band Selective High-Efficiency GaN HEMT Power Amplifier by Characteristic Impedance Switching [PDF]
, 2018 A 4.5-/4.9-GHz band-selective GaN HEMT high-efficiency power amplifier has been designed and evaluated for next-generation wireless communication systems.
Kazuhiko HONJO +2 more
core +2 more sources
Evaluation of SiC Schottky diodes using pressure contacts [PDF]
, 2017 The thermomechanical reliability of SiC power devices and modules is increasingly becoming of interest especially for high power applications where power cycling performance is critical. Press-pack assemblies are a trusted and reliable packaging solution
Alatise, Olayiwola +7 more
core +3 more sources
An N-bit digitally variable ultra wideband pulse generator for GPR and UWB applications [PDF]
, 2006 This paper presents a low-cost Ultra Wideband (UWB) pulse generator that can vary the pulse duration digitally by using a Step Recovery Diode (SRD), microstrip transmission lines and PIN diodes.
Bennett +10 more
core +1 more source
Reconfigurable dual band microstrip patch antenna for software defined radio applications [PDF]
, 2010 In this paper, a reconfigurable microstrip patch antenna with RF pin diode switches is implemented for dual band of 2.4 GHz and 5.6 GHz Software Defined Radio (SDR) applications.
Croq +7 more
core +3 more sources
Frequency reconfigurable patch antenna for 4G LTE applications [PDF]
, 2018 A compact printed multi-band frequency reconfigurable patch antenna for 4G LTE applications is presented in this paper (50 x 60 x 1.6 mm3). The antenna consists of W-shaped and Inverted-U shaped patch lines connected in a Tree-shape on the front side of ...
Abbasi, Qammer H. +4 more
core +1 more source