A double layer antenna

Abstract

Disclosed is a dual-layer antenna, comprising a first PCB and a second PCB stacked together. A top surface of the first PCB is provided with a first microstrip unit, the first microstrip unit comprising two symmetrically arranged microstrip vibration sets having the same shape. A top surface of the second PCB is provided with a second microstrip unit. When the first PCB and the second PCB are stacked, the second microstrip unit is located on the top surface of the second PCB and a bottom surface of the first PCB. Via an excellent dual-layer structural design and continuous testing and parameter adjustment, the present invention achieves excellent antenna performance and gain with good front-to-back ratio characteristics. The antenna has the features of a low profile, a wide band and a high gain. The 10dB impedance bandwidth of the antenna is 28.4%, and the average gain of a single antenna is 8.2dBi.

Description

technical field [0001] The present invention relates to a double-layer antenna. Background technique [0002] An antenna is a device that converts high-frequency current into radio waves and transmits it into space, and at the same time can collect space radio waves and generate high-frequency current. The antenna can be regarded as a tuning circuit composed of capacitance and inductance; at certain frequency points, the capacitance and inductance of the tuning circuit will cancel each other, and the circuit exhibits pure resistance. This phenomenon is called resonance, and the resonance phenomenon corresponds to The working frequency is the resonant frequency, and the energy at the resonant frequency of the antenna has the strongest radiation characteristics. Antenna structures with resonance characteristics are called antenna antennas, and antenna structures directly excited by high-frequency currents are called active antennas, and vice versa. During design, in order to...

AI Technical Summary

Problems solved by technology

The antenna structure with resonance characteristics is called antenna antenna, and the antenna structure directly excited by high-frequency current is called active antenna, otherwise it is called passive antenna; in the existing antenna, the antenna is adjusted according to the needs of actual use During design, in order to make the resonant frequency point of the antenna meet the setting requirements, the input impedance of the antenna needs to be adjusted. The adjusted antenna and the ordinary antenna still cannot meet the requirements of the current communication standard. The current communication standard is getting higher and higher. The requirements for antennas are getting higher and higher, and the gain, directivity, and front-to-back ratio of current antennas all need breakthroughs.

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