Miniaturized wide-beam multi-frequency fusion receiving and transmitting integrated Beidou antenna based on bent oscillators

Abstract

The invention belongs to the field of multi-frequency-band antennas, particularly relates to a miniaturized wide-beam multi-frequency fusion receiving and transmitting integrated Beidou antenna based on bent oscillators, and aims to solve the problems that an existing multi-frequency-band Beidou antenna is complex in structure, low in low-elevation gain, poor in circular polarization axial ratio and low in positioning precision. According to the antenna, a Beidou antenna feed circuit sends out corresponding radio frequency signals through a B1 / B2 / B3 radio frequency port, an L radio frequency port and an S radio frequency port; the S radio frequency port is arranged at the center of the Beidou antenna feed circuit, and the B1 / B2 / B3 radio frequency port and the L radio frequency port are symmetrically arranged at two side edges of the Beidou antenna feed module by taking the S radio frequency port as a center; and an antenna array comprises a first bent array, a second bent array, a third bent array and a fourth bent array, and the bent arrays are selectively and symmetrically distributed around the S radio frequency port as the center at a set distance and a set angle and are used for receiving / transmitting corresponding radio frequency signals. The miniaturized wide-beam multi-frequency integrated receiving and transmitting Beidou antenna is realized through sharing of the bent array and left and right-hand circular polarization.

Description

technical field [0001] The invention belongs to the field of multi-band antennas, and in particular relates to a miniaturized wide-beam multi-frequency fusion transceiver integrated Beidou antenna based on bending elements. Background technique [0002] Satellite navigation systems are becoming more and more important in economic development, scientific research, disaster prevention and control, and military fields, and accurate reception of satellite navigation signals is particularly important. Satellite navigation signals are provided by ground monitoring stations distributed throughout the country. The ground monitoring station of the Beidou navigation system is a passive facility, which must rely on the antenna to receive navigation signals, and then convert the navigation signals into electric current and send them to the monitoring receiver of the ground monitoring station. Monitoring receivers receive the same signals as the user community, but require higher techni...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned problems in the prior art, that is, the existing multi-band Beidou antenna has complex structure, low gain at low elevation angles, poor circular polarization axis ratio, and low positioning accuracy, the present invention provides a small Wide beam multi-frequency fusion transceiver integrated Beidou antenna, the Beidou antenna includes Beidou antenna feed circuit and antenna array;

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