Millimeter-wave circumferential uniform radiation microstrip array antenna

Abstract

The invention provides a millimeter-wave circumferential uniform radiation microstrip array antenna, which comprises a ring feeder, multiple array elements and inner feeders, wherein the ring feeder is an outer ring feeder with a circle center; one end of each of the multiple array elements is connected with the outer ring feeder and the other end is toward the circle center of the outer ring feeder; the multiple array elements are uniformly distributed in the circumferential direction; the inner feeders are equal to the array elements in quantity; one end of each inner feeder is connected with a middle point of a ring of connection points of the adjacent array elements and the outer ring feeder, and the other end is connected with the circle center of the outer ring feeder; and a feeding point is arranged at the circle center of the outer ring feeder. Through the design of the inner feeders with geometric symmetry, the feeding point is arranged at the circle center of the outer ring feeder, so that uniform current distribution of four array elements is ensured, current distribution on a non-main feed array antenna is strengthened, the directional radiation characteristic of the antenna is changed and high-gain radiation can be kept in multiple directions.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a millimeter-wave circumferential uniform radiation microstrip array antenna. Background technique [0002] In recent years, with the development of next-generation 5G communication technology, the requirements for high transmission rate, miniaturization and integration of microstrip antenna arrays are getting higher and higher. At the same time, under the condition that wireless communication spectrum resources are becoming increasingly tight, the communication frequency band is gradually migrating to the millimeter wave band. Among them, the 60-GHz frequency band has attracted widespread attention due to its abundant frequency band resources and high transmission rate. [0003] By consulting the relevant literature, we found that most of the existing antennas in the corresponding frequency bands are designed by arraying microstrip patch units, and som...

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Problems solved by technology

At the same time, there are also examples of using a single loop feeder to combine patch arrays. This loop feeder is beneficial to antenna gain and return loss, but the antenna formed is generally a directional antenna and can only be used for point-to-point communications.

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