Bent microstrip line-shaped mobile phone embedded dual-frequency circularly polarized satellite navigation antenna

Abstract

The invention discloses a bent microstrip line-shaped embedded dual-frequency circularly polarized satellite navigation antenna for a mobile phone. The antenna comprises a grounding plate, a circuit dielectric substrate, a microstrip line and an antenna dielectric substrate, wherein the grounding plate is arranged on the lower surface of the circuit dielectric substrate; the microstrip line is arranged on the upper surface of the circuit dielectric substrate and is used for signal transmission; and the antenna dielectric substrate is vertically arranged at the right upper corner of the upper surface of the circuit dielectric substrate. By changing the shape and the length of the antenna slot, the electrical length of current on the metal patch is prolonged, the flow direction of the current is changed, and control over low-frequency resonance points is achieved. By changing the shape of the ground seam gap and the length of the metal patch, the coupling effect between the grounding plate and the antenna is controlled, and control over a high-frequency resonance point is achieved. By changing the shape of the ground gap and the height of the antenna gap relative to the grounding plate, the ratio between high frequency and low frequency can be controlled, and ideal dual-frequency resonance is realized.

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