scholarly journals Dual-Band Dual-Mode Textile Antenna/Rectenna for Simultaneous Wireless Information and Power Transfer (SWIPT)

2021 ◽  
pp. 1-1
Author(s):  
Mahmoud Wagih ◽  
Geoffrey S. Hilton ◽  
Alex S. Weddell ◽  
Steve Beeby
Keyword(s):  
Dual Band ◽  
Power Transfer ◽  
Dual Mode ◽  
Textile Antenna

Dual band dual mode triangular textile antenna for body-centric communications

2019 ◽  
Author(s):  
S. Bhattacharjee ◽  
S. Teja ◽  
M. Midya ◽  
S. R. Bhadra Chaudhuri ◽  
M. Mitra
Keyword(s):  
Dual Band ◽  
Dual Mode ◽  
Textile Antenna

Dual-Band Dual-Mode Textile Antenna on PDMS Substrate for Body-Centric Communications

2017 ◽  
Vol 16 ◽  
pp. 677-680 ◽  
Author(s):  
Roy B. V. B. Simorangkir ◽  
Yang Yang ◽  
Ladislau Matekovits ◽  
Karu P. Esselle
Keyword(s):  
Dual Band ◽  
Pdms Substrate ◽  
Dual Mode ◽  
Textile Antenna

scholarly journals Dual-Band RF Wireless Power Transfer System with a Shared-Aperture Dual-Band Tx Array Antenna

Energies ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3803
Author(s):  
Chan-Mi Song ◽  
Hong-Jun Lim ◽  
Son Trinh-Van ◽  
Kang-Yoon Lee ◽  
Youngoo Yang ◽  
...  
Keyword(s):  
Wireless Power Transfer ◽  
Transmission Efficiency ◽  
Array Antenna ◽  
Dual Band ◽  
Single Frequency ◽  
Power Transfer ◽  
Wireless Power ◽  
Beam Focusing ◽  
Received Power ◽  
Rf Wireless

In this paper, a dual-band RF wireless power transfer (WPT) system with a shared-aperture dual-band Tx array antenna for 2.4 and 5.8 GHz is proposed. The final configuration of the Tx array, which is made up of 2.4 GHz right-handed circular polarization (RHCP) patches and 5.8 GHz RHCP patches, is derived from the optimization of 2.4 and 5.8 GHz thinned arrays, ultimately to achieve high transmission efficiency for various WPT scenarios. The dual-band RF WPT Tx system including the Tx array antenna and a Tx module is implemented, and Rx antennas with a 2.4 GHz patch, a 5.8 GHz patch, and a dual-band (2.4 and 5.8 GHz) patch are developed. To validate the proposed dual-band RF WPT system, WPT experiments using a single band and dual bands were conducted. When transmitting RF wireless power on a single frequency (either 2.482 GHz or 5.73 GHz), the received power according to the distance between the Tx and Rx and the position of the Rx was measured. When the distance was varied from 1 m to 3.9 m and the transmitted power was 40 dBm, the received power value at 2.482 GHz and 5.73 GHz were measured and found to be 24.75–13.5 dBm (WPT efficiency = 2.985–0.224%) and 19.25–6.8 dBm (WPT efficiency = 0.841–0.050%), respectively. The measured results were in good agreement with the calculated results, and it is revealed that the transmission efficiency when wireless power is transmitted via beam-focusing increases more than that with conventional beam-forming. Furthermore, the dual-band WPT experiment proves that 2.482 GHz beam and 5.73 GHz beams can be formed individually and that their wireless power can be transmitted to a dual-band Rx or two different Rx.

3-D Printed Dual-Band Filter Based on Spherical Dual-Mode Cavity

2021 ◽  
pp. 1-1
Author(s):  
Yuan Chen ◽  
Gang Zhang ◽  
Jiasheng Hong ◽  
Zhengyu Sun ◽  
Jiquan Yang ◽  
...  
Keyword(s):  
Dual Band ◽  
Dual Mode ◽  
Band Filter

A miniature dual-band filter based on microstrip dual-mode resonators

2012 ◽  
Vol 38 (9) ◽  
pp. 839-842 ◽  
Author(s):  
B. A. Belyaev ◽  
A. M. Serzhantov ◽  
V. V. Tyurnev
Keyword(s):  
Dual Band ◽  
Dual Mode ◽  
Band Filter

Millimeter-wave dual-mode and dual-band switchable Gilbert up-conversion mixer in 65-nm CMOS process

2021 ◽  
pp. 1-5
Author(s):  
Fang Zhu ◽  
Guo Qing Luo
Keyword(s):  
Millimeter Wave ◽  
Complementary Metal Oxide Semiconductor ◽  
Local Oscillator ◽  
Metal Oxide Semiconductor ◽  
Oxide Semiconductor ◽  
Dual Band ◽  
Cmos Process ◽  
Pumping Power ◽  
Dual Mode ◽  
Dc Power

Abstract In this paper, a millimeter-wave (MMW) dual-mode and dual-band switchable Gilbert up-conversion mixer in a commercial 65-nm complementary metal oxide semiconductor (CMOS) process is presented. By simply changing the bias, the proposed CMOS Gilbert up-conversion mixer can be switched between subharmonic and fundamental operation modes for MMW dual-band applications. With a low local oscillator pumping power of 3 dBm and low dc power consumption of 6 mW, the proposed CMOS Gilbert up-conversion mixer exhibits a measured conversion gain of −0.5 ± 1.5 dB from 37 to 50 GHz and 2.5 ± 1.5 dB from 17.5 to 32 GHz for the subharmonic and fundamental modes, respectively.

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