Results 31 to 40 of about 835,271 (348)

Independently Tunable Concurrent Dual-Band VCO Using Square Open-Loop Resonator

IEEE Access, 2018
A concurrent dual-band voltage-controlled oscillator (VCO) with independently tunable dual oscillation frequencies is proposed. A shared square open-loop dual-mode resonator and two varactor diodes are the basic units offering flexible tuning for the ...
Boqiong Li, Yongle Wu, Cuiping Yu, Yuanan Liu   +3 more
doaj   +1 more source

Dual-band wearable textile antenna on an EBG substrate [PDF]

, 2009
Performance of a dual-band coplanar patch antenna integrated with an electromagnetic band gap substrate is described. The antenna structure is made from common clothing fabrics and operates at the 2.45 and 5 GHz wireless bands. The design of the coplanar
Langley, R., Zhu, S.Z.
core   +1 more source

Dual Band Microstrip Antenna

Tecnología y Ciencia
The amount of data in today’s communication systems is increasing considerably, which in turn increases the bandwidth needed to deploy a given service. This requires antennas that are capable of operating simultaneously in more than one band.
Juan Eduardo Ise, Axel Hemsy, Mariano Fagre, Fernando Alberto Miranda Bonomi, Miguel Angel Cabrera, Jorge Scandaliaris   +5 more
doaj   +1 more source

Compact Dual-band Filtering Power Divider with Low Loss and High Isolation Based on Open-Circuited Stepped-impedance Resonators [PDF]

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
In this paper, a novel, compact, and high-performance dual-band filtering power divider is presented. The proposed circuit is constructed from a dual-band power divider and open-circuited stepped-impedance resonators.
Nguyen Minh Giang, Tran Bao Ngoc, Pham Van Hung, Tran Van Long, Do Tran Quang Thang   +4 more
doaj   +1 more source

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

IEEE 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, Gillard, Raphaël, Roy, Langis   +2 more
openaire   +3 more sources

Miniature Multi-Band Absorptive Bandstop Filter Designs Using Bridged-T Coils

IEEE Access, 2018
In this paper, miniature absorptive bandstop filters (ABSFs) with one to three stopbands are demonstrated. First, the proposed single-band ABSF is realized by the introduction of one lossy resonator to a conventional stub bandstop filter, while the ...
En-Wei Chang, Yo-Shen Lin
doaj   +1 more source

Crumpled textile antennas [PDF]

, 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, Q. Bai, R. Langley, Salonen, Salonen, Tanaka, Zhu   +6 more
core   +1 more source

A photometric survey for Lyalpha-HeII dual emitters: Searching for Population III stars in high-redshift galaxies

, 2008
We present a new photometric search for high-z galaxies hosting Population III (PopIII) stars based on deep intermediate-band imaging observations obtained in the Subaru Deep Field (SDF), by using Suprime-Cam on the Subaru Telescope. By combining our new
Ajiki M., Ajiki M., Celestine Grady, Chun Ly, Daniel Schaerer, El Eid M. F., Iye M., Kashikawa N., Kentaro Motohara, Kodaira K., Madau P., Matthew A. Malkan, Miyazaki S., Nobunari Kashikawa, Roberto Maiolino, Shimasaku K., Shunji S. Sasaki, Takashi Murayama, Taniguchi Y., Taniguchi Y., Tohru Nagao, Tornatore L., Yamada S. F., Yasuhiro Shioya, Yoshiaki Taniguchi   +24 more
core   +3 more sources

Dual-Band Tunable Recursive Active Filter

, 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, García Pérez, Oscar Alberto, González Posadas, Vicente, Segovia Vargas, Daniel   +3 more
core   +1 more source

Demonstration of detuned dual recycling at the Garching 30m laser interferometer [PDF]

, 2000
Dual recycling is an advanced optical technique to enhance the signal-to-noise ratio of laser interferometric gravitational wave detectors in a limited bandwidth.
Danzmann, K., Freise, A., Heinzel, G., Lueck, H., Mizuno, J., Ruediger, A., Schilling, R., Skeldon, K. D., Strain, K. A., Willke, B., Winkler, W.   +10 more
core   +2 more sources