Ultra-wide-band microstrip patch antenna and multi-frequency antenna array

Abstract

The invention relates to an ultra-wide-band microstrip patch antenna and a multi-frequency antenna array. The microstrip patch antenna comprises a metal reflective plate and a radiation patch apparatus above the metal reflective plate; a metal patch and two gaps with opening slots in a first straight line direction are arranged on a microstrip patch layer; the opening slots of the gaps in the first straight line direction are opposite in directions; a feed network layer comprises a first feed input port, a first power division node, a first feeder line, a second feeder line and a third feeder line; one end of the first feeder line is connected with the first feed input port while the other end is connected with the input end of the first power division node; and the fixed ends of the second feeder line and the third feeder line are connected with the output end of the first power division node separately while the free ends extend towards the same side of the two gaps in the first straight line direction separately to cross over the two gaps in the first straight line direction respectively. By virtue of the technical scheme provided by the invention, the problems of antenna feed chromatic dispersion, poor directional diagram cross polarization and cross coupling of different frequencies in a multi-frequency antenna can be solved.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to an ultra-wideband microstrip patch antenna and a multi-frequency antenna array. Background technique [0002] The antenna is an energy conversion device in the mobile communication system. In mobile communications, directional antennas use half-wave symmetric dipoles to form antennas. Generally speaking, the height of half-wave symmetric dipoles is about a quarter of the wavelength, and it is difficult to reduce the height. At present, multi-frequency and multi-column antennas are the industry trend. However, the half-wave symmetric vibrator cannot solve the problem of high and low frequency mutual coupling in multi-frequency multi-column antennas. It is also a major problem that all antenna manufacturers cannot effectively solve at present. [0003] The patch antenna instead of the half-wave symmetric element can solve the above problems. For example, the disclosed name of ...

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Problems solved by technology

[0004] In view of this, the purpose of the present invention is to overcome the deficiencies in the prior art, to provide a kind of ultra-wideband microstrip patch antenna and multi-frequency antenna array, to solve the narrow antenna bandwidth in the prior art, the antenna feeding dispersion problem and the direction diagram Poor cross polarization, in multi-frequency and multi-column antennas, solves the problem of high and low frequency mutual coupling

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