scholarly journals Dual-Band Circularly Polarized Shared-Aperture Array for $C$ -/ $X$ -Band Satellite Communications

2017 ◽  
Vol 65 (10) ◽  
pp. 5171-5178 ◽  
Author(s):  
Chun-Xu Mao ◽  
Steven Gao ◽  
Yi Wang ◽  
Qing-Xin Chu ◽  
Xue-Xia Yang
Keyword(s):  
Satellite Communications ◽  
Dual Band ◽  
Circularly Polarized ◽  
X Band ◽  
Aperture Array

A Highly Efficient Dual-Band Transmitarray Antenna Using Cross and Square Rings Elements

2021 ◽  
Vol 36 (7) ◽  
pp. 852-857
Author(s):  
Yongliang Zhang ◽  
Xiuzhu Lv ◽  
Jiaxuan Han ◽  
Shuai Bao ◽  
Yao Cai ◽  
...  
Keyword(s):  
Satellite Communications ◽  
Dual Band ◽  
Band Ratio ◽  
Maximum Gain ◽  
Aperture Efficiency ◽  
Dielectric Substrates ◽  
Highly Efficient ◽  
X Band ◽  
Transmission Phase ◽  
Ku Band

In this paper, a highly efficient dual-band transmitarray antenna using cross and square rings elements is presented for X and Ku bands. The dual-band transmitarray is designed for downlink/uplink frequencies of Ku band satellite communications. The transmitarray element consists of four metal patches and two dielectric substrates. The metal patch is printed on both sides of the substrate. By optimizing the parameters, the transmitarray element can achieve a transmission phase coverage greater than 360° and work independently in both frequency bands. Then, a method to select the size of the element is proposed, so that all the elements in the array can realize the transmission phase of the two frequencies as much as possible. A 201-elements transmitarray antenna is fabricated and measured and the band ratio of the antenna is 1.13. The measured maximum gain at 11.5 GHz is 22.4 dB, corresponding to the aperture efficiency is 52.7%. The measured maximum gain at 13 GHz is 24.2 dB, corresponding to the aperture efficiency is 62.4%. The 1-dB gain bandwidths are 9.7% (10.8-11.9 GHz) at X band and 9% (12.6-13.8 GHz) at Ku band.

scholarly journals Low-Profile Dual Circularly Polarized Antenna Array for Satellite Communications in the X Band

2012 ◽  
Vol 60 (5) ◽  
pp. 2276-2284 ◽  
Author(s):  
Andrés Garcia-Aguilar ◽  
José-Manuel Inclan-Alonso ◽  
Lucía Vigil-Herrero ◽  
José-Manuel Fernandez-Gonzalez ◽  
Manuel Sierra-Perez
Keyword(s):  
Antenna Array ◽  
Satellite Communications ◽  
Circularly Polarized ◽  
Low Profile ◽  
X Band

scholarly journals Dual Circularly Polarized Aperture Array Antenna in Gap Waveguide for High-Efficiency Ka-Band Satellite Communications

2020 ◽  
Vol 1 ◽  
pp. 283-289
Author(s):  
Miguel Ferrando-Rocher ◽  
Jose Ignacio Herranz-Herruzo ◽  
Alejandro Valero-Nogueira ◽  
Bernardo Bernardo-Clemente
Keyword(s):  
High Efficiency ◽  
Satellite Communications ◽  
Array Antenna ◽  
Ka Band ◽  
Circularly Polarized ◽  
Aperture Array

scholarly journals CIRCULARLY POLARIZED ARRAYS OF CAVITY BACKED SLOT ANTENNAS FOR X-BAND SATELLITE COMMUNICATIONS

2008 ◽  
Vol 9 ◽  
pp. 179-198 ◽  
Author(s):  
Eman M. A. Eldesouki ◽  
Khalid Fawzi Ahmed Hussein ◽  
Adel M. El-Nadi
Keyword(s):  
Satellite Communications ◽  
Slot Antennas ◽  
Circularly Polarized ◽  
X Band

scholarly journals Dual-Band Circularly Polarized Transmitarray Antenna for Satellite Communications at (20, 30) GHz

2019 ◽  
Vol 67 (8) ◽  
pp. 5325-5333 ◽  
Author(s):  
Hamed Hasani ◽  
Joana S. Silva ◽  
Santiago Capdevila ◽  
Maria Garcia-Vigueras ◽  
Juan R. Mosig
Keyword(s):  
Satellite Communications ◽  
Dual Band ◽  
Circularly Polarized

A superstrate loaded aperture coupled dual-band circularly polarized dielectric resonator antenna for X-band communications

2020 ◽  
pp. 1-8
Author(s):  
Sounik Kiran Kumar Dash ◽  
Qingsha S. Cheng ◽  
Taimoor Khan
Keyword(s):  
Circular Polarization ◽  
Dielectric Resonator ◽  
Satellite Communications ◽  
Dual Band ◽  
Dielectric Resonator Antenna ◽  
Development Stages ◽  
The Third ◽  
X Band ◽  
Fabrication And Characterization ◽  
Slot Coupling

Abstract A superstrate loaded cylindrical dielectric resonator antenna is developed and demonstrated for dual-band circular polarization. The proposed antenna employs a microstrip-fed rotated cross-shaped slot coupling technique for exciting the dielectric resonator (DR). The design is developed in a straight forward way. Firstly, the DR is coupled with a conventional plus-shaped slot and operates in linear polarization mode at 7.4 and 11.2 GHz. Secondly, the slot is rotated by 10° to enable out-of-phase excitation and ensure circular polarization at the above-mentioned frequencies. In the third step, a square dielectric superstrate is placed above the DR which creates multiple reflection and enhance the gain up to ~8 dBi in both the frequencies without affecting other performances. The development stages are discussed in detail. The proposed design is demonstrated through prototype fabrication and characterization. This antenna can be used for X-band satellite communications.

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