A Four-Element Microstrip Array Antenna with Improved Bandwidth

Abstract

The invention relates to a bandwidth improved four-unit microstrip array antenna. Four rectangular radiation paths, an array unit feed line, a microstrip one to four power divider, a dielectric substrate, a feed port and the floor are included, the four-unit microstrip array antenna is connected with the microstrip one to four power divider, the microstrip one to four power divider and the floor are connected with the feed port, each rectangular radiation patch is etched with a groove slit, and the lengths of different slits are different. Four grooves in different lengths are added to the antenna, the patch units are reduced in the size while the work bandwidth of the antenna is increased, in particular the dielectric material is placed on a thin dielectric plate with a flexible medium orin the thickness lower than 1mm, and the method can be used to increase the bandwidth by 400% from 30M to 150M in 2.4GHz.

Description

technical field [0001] The invention relates to a microstrip antenna array, in particular to a four-element microstrip array antenna with improved bandwidth. Background technique [0002] In recent decades, the rapid development of the communication industry not only requires high-quality transmission of text, images, videos, data and other information, but also requires higher and higher broadband and miniaturization of equipment. Antennas are used to radiate and receive electromagnetic waves. Components play an important role in the radio system. Therefore, the antenna is correspondingly developing in the direction of planarization, miniaturization, broadband, large capacity, and multi-function. [0003] Compared with other microwave antennas, microstrip antennas have the advantages of small size, light weight, low profile, wearable, and easy to conform, and can obtain higher gain by forming a microstrip antenna array, but microstrip The shortcomings of narrow antenna ban...

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Problems solved by technology

[0005] In order to solve the above problems, the present invention provides a four-element microstrip array antenna with increased bandwidth. Frequency combination is performed through four-element rectangular radiation patches with frequency difference, which solves the problem of thin antennas fabricated on flexible substrates or whose thickness is less than 1mm. The bandwidth of the microstrip array antenna of the hard medium is too narrow, the processing cost is low, and it is suitable for mass production

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