Dual-Band Dual-Polarized Reflectarray for Multiple Spot Beam Applications in Ka-band

2019 ◽  
Author(s):  
Min Zhou ◽  
Stig B. Sorensen ◽  
Niels Vesterdal ◽  
Michael F. Palvig
Keyword(s):  
Dual Band ◽  
Ka Band ◽  
Dual Polarized ◽  
Spot Beam ◽  
Multiple Spot

scholarly journals Bifocal Dual-Reflectarray Antenna to Generate a Complete Multiple Spot Beam Coverage for Satellite Communications in Ka-Band

Electronics ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 961
Author(s):  
Eduardo Martinez-de-Rioja ◽  
Jose A. Encinar ◽  
Giovanni Toso
Keyword(s):  
Satellite Communications ◽  
Lower Number ◽  
Orthogonal Polarization ◽  
Ka Band ◽  
Satellite Applications ◽  
Deviation Factor ◽  
Reflectarray Antenna ◽  
First Time ◽  
Spot Beam ◽  
Multiple Spot

This paper presents a novel multibeam transmitting dual-reflectarray antenna able to generate a complete multiple spot coverage from a geostationary satellite in Ka-band (20 GHz). The bifocal design technique has been exploited for the first time to reduce by 50% the beam deviation factor with respect to the equivalent monofocal antenna, allowing to produce adjacent beams separated by only 0.56° in the antenna offset plane. In order to guarantee an acceptable spillover, the main reflectarray has been oversized in the same plane where the beams are compressed, resulting in an elliptical reflectarray of 3.5 m × 1.8 m. The interleaved beams required to provide the complete multi-spot coverage are produced in the orthogonal polarization, using the same aperture and feeds. The proposed antenna requires a smaller main aperture (about half of the area) and a lower number of feeds than other configurations that use a single oversized reflector to generate a complete multi-spot coverage, showing promising results for communication satellite applications in the Ka-band.

Ka-band antenna arrays with dual-frequency and dual-polarized patch elements

2016 ◽  
Vol 8 (6) ◽  
pp. 963-972 ◽  
Author(s):  
Benjamin Rohrdantz ◽  
Thomas Jaschke ◽  
Frauke K. H. Gellersen ◽  
Anton Sieganschin ◽  
Arne F. Jacob
Keyword(s):  
Antenna Arrays ◽  
Patch Antenna ◽  
Communication Systems ◽  
Satellite Communication ◽  
Circuit Board ◽  
Dual Band ◽  
Antenna Element ◽  
Dual Frequency ◽  
Ka Band ◽  
Dual Polarized

In this contribution a dual-band, dual-polarized microstrip antenna element for array applications is presented. The patch antenna is designed to operate simultaneously at around 30 and 20 GHz, the up- and downlink frequencies of modern Ka-band satellite communication systems. The antenna is smaller than half the freespace wavelength at 30 GHz to enable its utilization as array element of dual-band ground terminals. Integrating transmitter and receiver circuits allows, in turn, for a very compact active terminal solution. To minimize production cost, the design is carried out in standard multilayer printed circuit board technology. The antenna features two distinct polarization ports suitable for either dual linear or dual circular polarization if both ports are excited in quadrature. The single antenna design process is described in detail and simulation and measurement results are presented. Finally, different arrays based on this patch antenna are evaluated by simulation and measurements.

Doubly Curved Reflectarray for Dual-Band Multiple Spot Beam Communication Satellites

2020 ◽  
Vol 68 (3) ◽  
pp. 2087-2096
Author(s):  
Min Zhou ◽  
Stig B. Sorensen ◽  
Yan Brand ◽  
Giovanni Toso
Keyword(s):  
Dual Band ◽  
Doubly Curved ◽  
Spot Beam ◽  
Multiple Spot

Dual-band dual-polarized transmitarrays at Ka-band

2017 ◽  
Author(s):  
Kien Pham ◽  
Ronan Sauleau ◽  
Erwan Fourn ◽  
Fatimata Diaby ◽  
Antonio Clemente ◽  
...  
Keyword(s):  
Dual Band ◽  
Ka Band ◽  
Dual Polarized

scholarly journals A Compact Dual-Band and Dual-Polarized Millimeter-Wave Beam Scanning Antenna Array for 5G Mobile Terminals

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Yuqi He ◽  
Sihan Lv ◽  
Luyu Zhao ◽  
Guan-Long Huang ◽  
Xiaoming Chen ◽  
...  
Keyword(s):  
Antenna Array ◽  
Millimeter Wave ◽  
Wave Beam ◽  
Dual Band ◽  
Mobile Terminals ◽  
Beam Scanning ◽  
Dual Polarized ◽  
Scanning Antenna

scholarly journals A compact low-noise frontend for interleaved Rx/Tx arrays at K-/Ka-Band

2021 ◽  
pp. 1-7
Author(s):  
Anton Sieganschin ◽  
Thomas Jaschke ◽  
Arne F. Jacob
Keyword(s):  
Insertion Loss ◽  
Printed Circuit Board ◽  
Noise Figure ◽  
Low Noise ◽  
Single Band ◽  
Circuit Board ◽  
Dual Band ◽  
Ka Band ◽  
Compression Properties ◽  
The Individual

Abstract This contribution deals with a frontend for interleaved receive (Rx)-/transmit (Tx)-integrated phased arrays at K-/Ka-band. The circuit is realized in printed circuit board technology and feeds dual-band Rx/Tx- and single-band Tx-antenna elements. The dual-band element feed is composed of a substrate-integrated waveguide (SIW) diplexer with low insertion loss, a low-noise amplifier (LNA), a bandpass filter, and several passive transitions. The compression properties of the LNA are identified through two-tone measurements. The results dictate the maximum allowable output power of the power amplifier. The single band feed consists of a SIW with several transitions. Simulation and measurement results of the individual components are presented. The frontend is assembled and measured. It exhibits an Rx noise figure of 2 dB, a Tx insertion loss of ~ 2.9 dB, and an Rx/Tx-isolation of 70 dB. The setup represents the unit cell of a full array and thus complies with the required half-wave spacing at both Rx and Tx.

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