Multi-network Broadband Antenna for Satellite Navigation Terminal

keywords:antenna  miniaturization  multi-band  gain  satellite  navigation

Abstract:To satisfy the demand of satellite navigation terminal antenna for multisystem compatibility and highly integration application, a multi-network broadband integrated satellite positoning terminal antenna is proposed. The cross dipole antenna, planar inverted-F antenna and monopole antenna with defective ground are introduced to cover global navigation satellite system (GNSS) frequency band(1 164 MHz~ 1 278 MHz & 1 557 MHz~ 1 612 MHz), bluetooth /WLAN frequency band (2 400 MHz~ 2 483. 5 MHz) and mobile communication frequency band (824 MHz~ 960 MHz & 1 710 MHz ~ 2 690 MHz) respectively. Multi-antenna compatibility is achieved by means of microstrip branch matching and decoupling structures. The overall dimension of the proposed antenna is 120 mm×120 mm× 45 mm. The measured results indicate that the voltage standing wave ratio can completely cover the working frequency bands of the above-mentioned GNSS, bluetooth and mobile communication, and the measured gain results are in good agreement with the simulated results. The proposed antenna has wide frequency band, high gain and easy to tune, which can be better applied in the GNSS terminal equipment.