Spaceborne miniaturized UHF dual band helix antenna with a small frequency ratio
Artikel i vetenskaplig tidskrift, 2021

This study proposes a novel miniaturized circularly polarized (CP) ultrahigh frequency (UHF) quadrifilar helix antenna for spaceborne applications. The dual-band operation is realized using four inverted-U shaped helical strips (IUSHSs) that are rotated and alternately arranged on the four faces of a hollow polyimide cuboid in a sequential rotation manner, which effectively reduces the size of the antenna. Furthermore, the four IUSHSs are connected by a cross-shape strip at the top of the antenna to control the dual resonant frequencies, resulting in a small dual-band frequency ratio. The proposed antenna is both lightweight and robust when compared with the conventional miniaturized CP antennas operating at similar bands with similar performance. In particular, its compact radiator provides effective miniaturized spaceborne solution without the need of high-dielectric coefficient materials. A device for spaceborne application that operates at 402/505 MHz is designed, fabricated, measured, and in-orbit tested with a weight of 651 g and an effective size of 0.161 × 0.161 × 0.228 λ3402MHz (λ402MHz is the wavelength at 402 MHz). The measured gain and axial ratio of the proposed antenna are better than 5.32 dBi and 2.18 dB, respectively, within 2 and 12 MHz bandwidth for the two bands. The test results proved that the methods used to design the proposed antenna are effective.

dual-band operation

UHF band

small frequency ratio

quadrifilar helix antenna

spaceborne

Författare

Kai Xue

Shenzhen Aerospace Dongfanghong HIT Satellite Ltd

Harbin Institute of Technology

Shaowei Liao

South China University of Technology

Ruilong Zhu

Xi'an matrix Wireless Technology Co., Ltd

Quan Xue

South China University of Technology

Liqin Ding

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Kommunikationssystem

Yang Wang

Harbin Institute of Technology

Qing Guo

Harbin Institute of Technology

Microwave and Optical Technology Letters

0895-2477 (ISSN) 1098-2760 (eISSN)

Vol. In Press

Ämneskategorier

Telekommunikation

Signalbehandling

Annan elektroteknik och elektronik

DOI

10.1002/mop.32820

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Senast uppdaterat

2021-03-18