Double-coupled microstrip antenna and antenna array

Abstract

The invention relates to a double-coupled microstrip antenna and an antenna array, and overcomes the defect that the radiation characteristics of the antenna are influenced due to the fact that a relatively long feed core wire and a short circuit pin generate parasitic inductance. The antenna comprises an antenna base, a feed coaxial line, a microstrip patch, a dielectric substrate and the short-circuit pin; the microstrip patch of the antenna is arranged on the dielectric substrate; the antenna further comprises two slots; an inner conductor of the feed coaxial line and the microstrip patch are connected through slot coupling; and the short circuit pin is connected with the microstrip patch through slot coupling; and the size of each slot is determined by the working frequency of the antenna. The slot coupling feed mode is introduced, so that the distance between the microstrip patch and a floor is relatively long; and under the condition that the inner conductor of the coaxial feed line and the short circuit pin are relatively long, the microstrip antenna can still keep good radiation characteristics, namely, the gain is high, the directionality is good, the structure is simple, the processing is easy, and the cost is low. The antenna is small in size and can fully meet the requirement of miniaturization of the antenna array as a unit antenna.

Description

technical field [0001] The invention belongs to the field of electronic technology, and in particular relates to a miniaturized microstrip antenna and a microstrip array antenna. Background technique [0002] Microstrip antenna is a new type of antenna developed gradually in the past 30 years. As early as 1953, the concept of microstrip antenna was proposed, but it did not attract the attention of the engineering community. There were only a few sporadic studies in the 1950s and 1960s, and the real development and use came in the 1970s. Microstrip patch antennas have many advantages, such as low profile, light weight, conformality, and easy mass production. Now the development direction of the microstrip patch antenna is mainly to expand the antenna bandwidth, reduce the size of the antenna, and increase the gain of the antenna. [0003] In expanding the bandwidth of the microstrip antenna, the size of the antenna patch is often increased, such as a parasitic antenna patc...

AI Technical Summary

Problems solved by technology

However, there are few reports on improving the gain of microstrip antennas

[0004] In some applications, the distance between the microstrip patch and the antenna "floor" is relatively large, so the feed core wire and the short-circuit pin are relatively long, resulting in parasitic inductance, which greatly affects the radiation characteristics of the antenna

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