Low-Cost Ka-band Switchable RHCP/LHCP Antenna Array for Mobile SATCOM Terminal

A slot-microstrip-covered and waveguide-cavity-backed monopulse antenna array is proposed for high-resolution tracking applications at Ka-band. The monopulse antenna array is designed with a microstrip with2×32slots, a waveguide cavity, and a waveguide monopulse comparator, to make the structure simple, reduce the feeding network loss, and increase the frequency bandwidth. The2×32slot-microstrip elements are formed by a metal clad dielectric substrate and slots etched in the metal using the standard printed circuit board (PCB) process with dimensions of 230 mm × 10 mm. The proposed monopulse antenna array not only maintains the advantages of the traditional waveguide slot antenna array, but also has the characteristics of wide bandwidth, high consistence, easy of fabrication, and low cost. From the measured results, it exhibits good monopulse characteristics, including the following: the maximum gains of sum pattern are greater than 24 dB, the 3 dB beamwidth of sum pattern is about 2.2 degrees, the sidelobe levels of the sum pattern are less than −18 dB, and the null depths of the difference pattern are less than −25 dB within the operating bandwidth between 33.65 GHz and 34.35 GHz for VSWR ≤ 2.

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Retrieval of Encrypted PRN Sequences via a Selfcalibrating 40-element Low-cost Antenna Array: Demonstration of Proof-of-concept

Proceedings of the 33rd International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS+ 2020) ◽

10.33012/2020.17679 ◽

2020 ◽

Author(s):

D. Dötterböck ◽

M. Subhan Hammed ◽

T. Pany ◽

R. Lesjak ◽

T. Prechtl

Keyword(s):

Antenna Array ◽

Low Cost ◽

Proof Of Concept

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A Novel Wideband transition from Substrate Integrated Waveguide to Rectangular Waveguide

International Journal of Sensors Wireless Communications and Control ◽

10.2174/2210327910666200320092322 ◽

2020 ◽

Vol 10 ◽

Author(s):

Keyur Mahant ◽

Hiren Mewada ◽

Amit Patel ◽

Alpesh Vala ◽

Jitendra Chaudhari

Keyword(s):

Rectangular Waveguide ◽

Printed Circuit Board ◽

Low Cost ◽

Single Layer ◽

Circuit Board ◽

Substrate Integrated Waveguide ◽

Ka Band ◽

Better Than ◽

Millimeter Wave Circuits ◽

Wideband Transition

Aim: In this article, wideband substrate integrated waveguide (SIW) and rectangular waveguide (RWG) transition operating in Ka-band is proposed Objective: In this article, wideband substrate integrated waveguide (SIW) and rectangular waveguide (RWG) transition operating in Ka-band is proposed. Method: Coupling patch etched on the SIW cavity to couple the electromagnetic energy from SIW to RWG. Moreover, metasurface is introduced into the radiating patch to enhance bandwidth. To verify the functionality of the proposed structure back to back transition is designed and fabricated on a single layer substrate using standard printed circuit board (PCB) fabrication technology. Results: Measured results matches with the simulation results, measured insertion loss is less than 1.2 dB and return loss is better than 3 dB for the frequency range of 28.8 to 36.3 GHz. By fabricating transition with 35 SRRs bandwidth of the proposed transition can be improved. Conclusion: The proposed transition has advantages like compact in size, easy to fabricate, low cost and wide bandwidth. Proposed structure is a good candidate for millimeter wave circuits and systems.

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