Mini broadband micro-strip array antenna

Abstract

The invention relates to a mini broadband micro-strip array antenna. The antenna comprises a radiation array, the radiation array comprises multiple radiation paster units in an array structure of equal interval, in each radiation paster unit, rectangular grooves are formed in a rectangular paster in the axially symmetrical manner along the narrow side direction, and the top and bottom ends of the radiation paster unit include identical step-shaped gradually changed rectangular corner-cut structures respectively. Via the radiation array, the array antenna can only comprise the radiation array, a first dielectric plate, a metal ground plate, a second dielectric plate, pin and a feed network, wherein the radiation array is placed at the upper surface of the first dielectric plate, the feed network is placed at the lower surface of the second dielectric plate, the metal ground plate is placed between the first dielectric plate and the second dielectric plate, and the radiation array is connected with the feed network via punching by the pins. The current direction of the microstrip antenna is changed, multiple resonance frequency points can be added, and the broadband and mini design can be realized.

Description

technical field [0001] The invention relates to an array antenna in the field of wireless communication, in particular to a miniaturized broadband microstrip array antenna. technical background [0002] With the development of radio technology, the antenna is the front end of the radio frequency system, miniaturization and broadband work are the direction of its development. At present, microstrip antennas can easily realize the miniaturization of the structure, but the broadband work generally requires additional corresponding measures to achieve, such as multi-layer dielectric coupling patch, slot feed, etc. In order to improve the bandwidth of the microstrip antenna, researchers have developed many techniques to solve this problem. Sang-HyukWi et al. published a paper "WidebandmicrostrippattantennawithU-shapedparasiticelements" on IEEETransactionsonAntennasandPropagation in 2007. The paper presents a U-shaped parasitic patch microstrip antenna, using the gap between the ...

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Problems solved by technology

However, the bandwidth of these antenna structures is limited, and they are all unit structures, and the gain is generally only 6-9dB. In order to obtain greater gain or to achieve specific directional requirements, it is often necessary to use a microstrip antenna array composed of microstrip radiating elements. The influence of mutual coupling between radiating elements and the bandwidth limitation of the feed network will increase the difficulty of broadband design

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