Results 41 to 50 of about 803,088 (203)

Crumpled textile antennas [PDF]

open access: yes, 2009
The performance of a dual-band textile antenna under two-dimensional crumpling conditions is described. Both input impedance and radiation patterns are investigated based on numerical and experimental methods at 2.45 and 5.8 GHz.
Kellomaki   +6 more
core   +1 more source

A Dual-Band Dual-Circular-Polarization Antenna for Ka-Band Satellite Communications [PDF]

open access: yesIEEE Antennas and Wireless Propagation Letters, 2017
A novel Ka-band dual-band dual-circularly-polarized antenna array is presented in this letter. A dual-band antenna with left-hand circular polarization for the Ka-band downlink frequencies and right-hand circular polarization for the Ka-band uplink frequencies is realized with compact annular ring slots. By applying the sequential rotation technique, a
Mener, Simon   +2 more
openaire   +3 more sources

Reconfigurable dual band microstrip patch antenna for software defined radio applications [PDF]

open access: yes, 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

Dual‐band electrochromic materials for energy‐saving smart windows

open access: yesCarbon Neutralization, 2023
Smart windows refer to those which can dynamically modulate the transmitted light by changing their colors. Dual‐band electrochromic materials (ECMs) refer to materials that can change their colors and regulate light transmission in both visible (VIS ...
Siming Zhao   +9 more
doaj   +1 more source

A 6-to-18 GHz tunable concurrent dual-band receiver front end for scalable phased arrays in 130nm CMOS [PDF]

open access: yes, 2008
This paper presents a study and design of tunable concurrent dual-band receiver. Different system architectures and building blocks have been compared and analyzed.
Babakhani, Aydin   +3 more
core   +1 more source

Dual-Band Tunable Recursive Active Filter

open access: yes, 2011
This letter presents a novel recursive active filter topology that provides dual-band performance, with independent tuning capability in both bands. The dual-band operation is achieved by using two independent feedback lines.
Aznar Ballesta, Francisco   +3 more
core   +1 more source

Dual-Band Filter and Diplexer Design Using Extremely Miniaturized Substrate-Integrated Coaxial Cavity

open access: yesSensors
This paper presents the design of a dual-band filter and a diplexer using an extremely miniaturized substrate-integrated coaxial cavity (SICC) structure.
Chun-Ming Hung   +4 more
doaj   +1 more source

Gain Enhancement of Monopole Antenna using AMC Surface

open access: yesAdvanced Electromagnetics, 2018
A CPW rectangular-ring antenna over an Artificial Magnetic Conductor (AMC) is presented in this work. The AMC is a designed as a dual-band structure having an array of unit cells and operates at 2.45GHz and 5.20 GHz. A CPW antenna uses this dual-band AMC
F. Mouhouche   +3 more
doaj   +1 more source

Novel Compact and High Selectivity Dual-band BPF with Wide Stopband [PDF]

open access: yes, 2012
A novel type of compact and high selectivity dual-band bandpass filter (BPF) incorporating a dual-mode defected ground structure resonator (DDGSR) and a dual-mode open-stub loaded stepped impedance resonator (DOLSIR) is proposed in this paper.
Guan, B.-R., Wang, L.
core   +1 more source

Dual-band ridged waveguide [PDF]

open access: yes, 1975
Waveguide-in-waveguide technique involves routing two waveguides through same passageway. Smaller waveguide can be soft or silver soldered inside X-band waveguide to form single ridge guide and to propagate frequencies at C ...
Franke, J. M.
core   +1 more source

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