Effects of Reentry Plasma Sheath on GPS Patch Antenna Polarization Property | Zendy

Lingjun Zhao | Zendy; Bowen Bai | Zendy; W. M. Bao | Zendy; X. P. Li | Zendy

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Effects of Reentry Plasma Sheath on GPS Patch Antenna Polarization Property

Author(s) -

Lingjun Zhao,

Bowen Bai,

W. M. Bao,

X. P. Li

Publication year - 2013

Publication title -

international journal of antennas and propagation

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.282

H-Index - 37

eISSN - 1687-5877

pISSN - 1687-5869

DOI - 10.1155/2013/823626

Subject(s) - reentry , global positioning system , polarization (electrochemistry) , gps signals , plasma , antenna (radio) , debye sheath , materials science , physics , computer science , engineering , assisted gps , electrical engineering , telecommunications , chemistry , medicine , quantum mechanics , cardiology

A plasma sheath enveloping a reentry vehicle would affect performances of on-board antenna greatly, especially the navigation antennas. This paper studies the effects of reentry plasma sheath on a GPS right-hand circularly polarized (RHCP) patch antenna polarization property during a typical reentry process. Utilizing the algorithm of finite integration technique, the polarization characteristic of a GPS antenna coated by a plasma sheath is obtained. Results show that the GPS RHCP patch antenna radiation pattern distortions as well as polarization deteriorations exist during the entire reentry process, and the worst polarization mismatch loss between a GPS antenna and RHCP GPS signal is nearly 3 dB. This paper also indicates that measures should be taken to alleviate the plasma sheath for maintaining the GPS communication during the reentry process

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