An air-filled metal planar array antenna

Abstract

The invention provides an air filler metal planar array antenna and belongs to the technical field of array antennas. The air filler metal planar array antenna comprises an air power dividing network,wherein two transmission segments connected to each other in the air power dividing network form a T-shaped connection structure; electromagnetic energy is equally distributed in each T-shaped connection structure; the two ends of the last transmission segment are provided with first air vertical waveguides; the upper surface of each first air vertical waveguide is connected to an air cavity; four second air vertical waveguides are arranged centrally symmetrically on the air cavity; four radiating element individuals are centrally symmetrically distributed on the two sides of the long side ofthe two air vertical waveguides. The air filler metal planar array antenna is compact in structure, high in integration degree, small in space volume and easy to machine and realizes radiating elements with wideband radiation characteristics. The radiating elements and a feed network can be well matched, and the electromagnetic energy can be efficiently transmitted and effectively allocated in amultilayer metal cavity so as to ensure that the antenna has a wide frequency band, high gain and stable radiation characteristics.

Description

technical field [0001] The invention relates to the technical field of array antennas, in particular to an air-filled metal planar array antenna with wide frequency band and stable radiation characteristics. Background technique [0002] With the development of electronic science and wireless communication technology, in order to meet the needs of high capacity, high speed, and low delay in mobile communication systems, modern communication antennas need to develop in the direction of broadband, high gain, and miniaturization. Array antennas have good beamforming capabilities, and are easy to achieve high directivity, high gain, and shapeable beams. They are an important technical means to achieve broadband and high gain characteristics. An array antenna usually consists of a feed network and a radiating element. As an important part of the array antenna to realize the effective distribution of electromagnetic energy, the feed network's insertion loss will directly limit th...

AI Technical Summary

Problems solved by technology

At present, all kinds of air waveguide parallel feeding networks are mostly based on T-shaped structure cascading design, usually using one or more sets of diaphragms to achieve matching, because the electromagnetic energy is reflected multiple times at different branches, it is difficult to achieve a wider working frequency band, so it is necessary to design a new broadband electromagnetic energy distribution structure

Images