Miniaturized frequency reconfigurable microstrip slit antenna

A microstrip slot and microstrip feeder technology, which is applied to antennas, antenna grounding devices, and devices that enable antennas to work in different bands at the same time, can solve the problems of large number of antennas, low integration, and large equipment volume in wireless communication systems , achieving the effects of simple antenna structure, reduced crosstalk and low cost

Inactive Publication Date: 2015-08-19
SHANXI UNIV
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Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems of large number of antennas, large equipment volume and l

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  • Miniaturized frequency reconfigurable microstrip slit antenna
  • Miniaturized frequency reconfigurable microstrip slit antenna
  • Miniaturized frequency reconfigurable microstrip slit antenna

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Embodiment Construction

[0021] The embodiments of the present invention will be described in detail below in conjunction with the drawings.

[0022] As attached figure 1 , 2 As shown, a miniaturized frequency reconfigurable microstrip slot antenna includes an upper microstrip feeder 1, a middle layer dielectric substrate 2 and a lower ground plate 3; the microstrip feeder 1 is a stepped feeder; The ground plate 3 is etched with two L-shaped open gaps 4 and a U-shaped short-circuit gap 5. Among them, the two L-shaped open gaps 4 are etched axisymmetrically with a center line of the ground plate 3; the horizontal branches of the U-shaped short-circuit gap 5 and The center lines intersect perpendicularly; three PIN diodes 6-1, 6-2, and 6-3 are respectively loaded on two L-shaped open gaps 4 and U-shaped short-circuit gaps 5; the ground plate 3 is also etched with four There are two bias slots 7-1, 7-2, 7-3, and 7-4, and ten DC blocking capacitors 8 are loaded on the bias slots 7-1, 7-2, 7-3, and 7-4.

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Abstract

The invention relates to the technical field of an antenna in a communication system integrated design, especially relates to a frequency reconfigurable microstrip antenna design, and specifically relates to a miniaturized frequency reconfigurable microstrip slit antenna, for solving the technical problems of too many wireless communication system antennas and low radio frequency front-end integration in the prior art. The miniaturized frequency reconfigurable microstrip slit antenna comprises three layers, an upper layer is provided with a microstrip feed line, an intermediate layer is provided with a medium substrate, and the lower layer is provided with a ground plate. The ground plate etches two L-shaped open circuit slits and one U-shaped open circuit slit, and all the slits are bilaterally symmetrical about the center of the ground plate. In order to realize frequency reconfiguration, one PIN diode is respectively loaded in each slit, and the antenna generates four work modes through controlling different combination states of the diodes. The miniaturized frequency reconfigurable microstrip slit antenna can work over a 2.3GHz frequency range of a fourth mobile communication system, a 4.4GHz frequency range of an aviation mobile remote measurement system and a 5.8GHz frequency range of a wireless local area network, is simple in structure, low in cost and good in reliability, and meets the requirements for compactness and high integration of a wireless communication system.

Description

Technical field [0001] The invention relates to the technical field of antennas in the comprehensive design of communication systems, in particular to the design of a compact and highly integrated frequency reconfigurable microstrip antenna, in particular to a miniaturized frequency reconfigurable microstrip slot antenna. Background technique [0002] With the vigorous development of wireless communication technology, many wireless communication systems (such as the fourth-generation mobile communication system TD-LTE, aeronautical mobile telemetry system AMT, and wireless local area network system WLAN, etc.) can be integrated into a communication platform. Different wireless communication systems have different antenna structures and sizes. If multiple communication systems are integrated and still use their own antennas, it will cause problems such as bulky equipment of the wireless communication system and increased interference between systems. In order to solve these proble...

Claims

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Application Information

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IPC IPC(8): H01Q1/48H01Q5/10H01Q5/28H01Q5/314
Inventor 韩丽萍王彩霞陈新伟张文梅
Owner SHANXI UNIV
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