Microstrip circular polarized antenna and work frequency adjusting device and method thereof

Abstract

The invention discloses a microstrip circular polarized antenna and a work frequency adjusting device and method thereof. The antenna comprises a grounding board, a medium substrate, a radiation paster and a variable capacitor, wherein the medium substrate is arranged on the grounding board, the radiation paster is pasted on the medium substrate and is applied to an equivalent capacitor or inductor to separate the tuning frequency of a degenerated orthogonal mode, the variable capacitor is connected with the radiation paster, and the variable capacitor is used for adjusting the center frequency of the antenna. The antenna is advantaged in that through applying different offset voltages to the variable capacitor, a capacitance value of the variable capacitor is changed, and adjustment on the work frequency of the antenna is realized.

Description

technical field [0001] The invention relates to the field of antennas, in particular to a microstrip circularly polarized antenna and an operating frequency adjustment device and method thereof. Background technique [0002] Vertically polarized antennas cannot receive signals transmitted by horizontally polarized antennas, and horizontally polarized antennas cannot receive signals transmitted by vertically polarized antennas, but circularly polarized signals can be received by various linearly polarized antennas, so they tend to be used in the field of satellite navigation When using a circularly polarized antenna as a receiving or transmitting antenna, the operating frequency of the antenna will be offset due to machining errors and random environmental influences. Contents of the invention [0003] The object of the present invention is to provide a microstrip circularly polarized antenna and its operating frequency adjustment device and method, so as to realize the adj...

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Problems solved by technology

[0002] Vertically polarized antennas cannot receive signals transmitted by horizontally polarized antennas, and horizontally polarized antennas cannot receive signals transmitted by vertically polarized antennas, but circularly polarized signals can be received by various linearly polarized antennas, so they tend to be used in the field of satellite navigation For the use of circularly polarized antennas as receiving or transmitting antennas, due to machining errors and randomly changing environmental influences, the working frequency of the antenna will be offset.

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