Dual‐band ridged tapered waveguide slot array antenna with cross‐polarisation reduction

2018 ◽  
Vol 12 (14) ◽  
pp. 2255-2261 ◽  
Author(s):  
Mohammad Khorramizadeh ◽  
Ali Reza Mallahzadeh ◽  
Rahmat Jesri ◽  
Sajad Mohammad‐Ali‐Nezhad
Keyword(s):  
Array Antenna ◽  
Dual Band ◽  
Waveguide Slot ◽  
Tapered Waveguide

DUAL-BAND ANTENNA ELEMENTS MUTUAL INFLUENCE REDUCTION DUE TO USE OF MULTI-ELEMENT TWISTREFLECTOR

2019 ◽  
pp. 15-19
Author(s):  
A. N. Mikhailov
Keyword(s):  
Diffraction Grating ◽  
Mutual Influence ◽  
Fdtd Method ◽  
Array Antenna ◽  
Dual Band ◽  
Technical Solution ◽  
Waveguide Slot ◽  
Dual Band Antenna ◽  
Significant Difference ◽  
Working Frequency

Technical solution that allows reduce mutual influence of «waveguide‑slot array antenna/twistreflector» system elements due to the use of a microstrip diffraction grating with rectangular elements as a twistreflector is given. The geometrical dimensions of the elements ae calculated in such a way that the diffraction grating converts a falling linearly polarized field into a field with orthogonal polarization at the working frequency band. Polarization characteristics angular dependence of twistreflector in EHF and radiation characteristics of waveguide‑slot array antenna multi‑element in SHF of investigated system was performed using FDTD method. The possibility of the system functioning in both working frequency range with an insignificant mutual influence is shown. The low level of mutual influence is explained by the significant difference in the resonant frequencies being combined.

An improved dual‐band shared aperture waveguide slot array antenna

2019 ◽  
Vol 61 (11) ◽  
pp. 2477-2481 ◽  
Author(s):  
Yao Zong ◽  
Jun Ding ◽  
Chenjiang Guo
Keyword(s):  
Array Antenna ◽  
Dual Band ◽  
Waveguide Slot

LTCC Partially-Filled Post-Wall Rectangular-Waveguide Slot Array Antenna in the Millimeter-Wave Band

2012 ◽  
Vol E95.C (10) ◽  
pp. 1635-1642 ◽  
Author(s):  
Yuanfeng SHE ◽  
Jiro HIROKAWA ◽  
Makoto ANDO ◽  
Daisuke HANATANI ◽  
Masahiro FUJIMOTO
Keyword(s):  
Millimeter Wave ◽  
Rectangular Waveguide ◽  
Array Antenna ◽  
Wave Band ◽  
Waveguide Slot ◽  
Millimeter Wave Band

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.

scholarly journals Dual-Band Single-Layer Slot Array Antenna Fed by K/Ka-Band Dual-Mode Resonators in Gap Waveguide Technology

2021 ◽  
pp. 1-1
Author(s):  
Miguel Ferrando-Rocher ◽  
Jose Ignacio Herranz-Herruzo ◽  
Alejandro Valero-Nogueira ◽  
Mariano Baquero-Escudero
Keyword(s):  
Single Layer ◽  
Array Antenna ◽  
Dual Band ◽  
Dual Mode ◽  
Ka Band
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