L/S Multiband Frequency-Reconfigurable Antenna for Satellite Applications

A novel multiband frequency-reconfigurable antenna is presented. The designed antenna can realize L-band single-frequency operation and S-band dual-frequency operation through electronic tuning. Annular ring and sawtooth patches are used as radiators for L/S-band operation and are excited by a broad...

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Veröffentlicht in:	IEEE antennas and wireless propagation letters 2019-12, Vol.18 (12), p.2617-2621
Hauptverfasser:	Sun, Mingyu, Zhang, Zhe, Zhang, Fan, Chen, Aixin
Format:	Artikel
Sprache:	eng
Schlagworte:	Antenna measurements Antennas Apertures Broadband Broadband antennas Broadband communication Broadband orthogonal network Circular polarization Couplings Feeds Ground plane Impedance matching multiband reconfigurable P-i-n diodes PIN diodes Polarization characteristics Radiators Reconfiguration Satellite communications Space applications stacked patch antenna Superhigh frequencies T shape Tuning
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Beschreibung
Zusammenfassung:	A novel multiband frequency-reconfigurable antenna is presented. The designed antenna can realize L-band single-frequency operation and S-band dual-frequency operation through electronic tuning. Annular ring and sawtooth patches are used as radiators for L/S-band operation and are excited by a broadband reconfigurable orthogonal network through the coupling of a T-shaped slot and a ring slot in the ground plane, respectively. By changing the bias of the p-i-n diodes loaded on the feed network, the operating frequency can be switched between the navigation state and the satellite link receiving state. A high tuning frequency ratio (1.64:1) is obtained. The simulated and measured results show good agreement. Good impedance matching (VSWR
ISSN:	1536-1225 1548-5757
DOI:	10.1109/LAWP.2019.2945624