Novel high-precision positioning antenna

Abstract

The invention discloses a novel high-precision positioning antenna, and relates to the technical field of antennas. The antenna comprises a main board, a high-frequency helical antenna and a low-frequency helical antenna; the high-frequency helical antenna and the low-frequency helical antenna are arranged on the main board, the high-frequency helical antenna and the low-frequency helical antennaare arranged in a concentric cylinder, and the high-frequency helical antenna is arranged on the inner side of the concentric cylinder; the height of the high-frequency helical antenna is greater thanthat of the low-frequency helical antenna, the high-frequency helical antenna and the low-frequency helical antenna adopt 1 / 4 wavelength for radiation and feed through the same phase shift network, the feed network is provided with four ports, the ports are equal in amplitude, and the phases are 0 degree, 90 degrees, 180 degrees and 270 degrees in sequence. The spiral antenna is adopted, the manufacturing process is simple, and the cost is lower; the radiating surface of the antenna excites high-frequency and low-frequency gains through a high-frequency and low-frequency double-frequency helical antenna form, so that the directional diagram of the antenna is more uniform and the precision is higher.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a novel high-precision positioning antenna. Background technique [0002] Global Navigation Satellite System (GNSS) is a full-time, all-weather, high-precision, continuous and real-time navigation system that provides navigation, positioning and timing. It plays a very important role in the fields of transportation, scientific research, disaster prevention and military affairs. GNSS antenna is mainly used as a transmitting antenna in the same-frequency transponder system. The antenna is composed of a radome, a microstrip radiator, a base plate and a high-frequency output socket, and is used as a receiving antenna for GPS navigation and positioning systems. Traditional GNSS antennas are mostly ceramic laminated antennas. Ceramic laminated antennas are made by sintering ceramic powder. The process is relatively complicated and the cost is high. The quality of ceramic powder and th...

AI Technical Summary

Problems solved by technology

Traditional GNSS antennas are mostly ceramic laminated antennas. Ceramic laminated antennas are made by sintering ceramic powder. The process is relatively complicated and the cost is high. The quality of ceramic powder and the sintering process directly affect the performance of the antenna. Support single-frequency positioning, narrow bandwidth, positioning accuracy is not high enough

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