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Compact broadband microstrip antenna with harmonic suppression

A microstrip antenna and harmonic suppression technology, which is applied in the field of broadband linearly polarized microstrip patch antennas, can solve problems such as difficult formation of arrays, excessive electrical size, and complex structure, and achieve low cost and high-order harmonic suppression , to avoid the effect of complex structures

Inactive Publication Date: 2018-11-23
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods generally have the disadvantages of complex structure, multi-layer dielectric plate mechanism, large electrical size and difficulty in forming an array.

Method used

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  • Compact broadband microstrip antenna with harmonic suppression
  • Compact broadband microstrip antenna with harmonic suppression
  • Compact broadband microstrip antenna with harmonic suppression

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Embodiment 1

[0021] This embodiment has a compact broadband microstrip patch antenna with harmonic suppression, which includes a single-layer microwave dielectric substrate 1, an antenna unit is arranged on the dielectric substrate 1, and the rectangular patch 2 of the antenna unit is the only radiating element. The calculation method of chip size is the same as that of ordinary patch antenna. Ordinary patch antennas are directly fed by a microstrip line or directly connected to a rectangular patch by a probe feed. In this embodiment, a coupling feeding method is adopted, and two symmetrically distributed quarter-wavelength microstrip stubs are used for excitation. The feed point is fed by a probe, which is directly connected to one of the thicker microstrip branches. A grounding short-circuit pin 5 is inserted into the center of the two microstrip stubs, so that two quarter resonators with unequal widths and unequal lengths can resonate. Since the two resonators in the horizontal direct...

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Abstract

The invention discloses a compact broadband microstrip antenna with harmonic suppression. The antenna comprises a single-layer dielectric substrate, and an antenna unit arranged on the dielectric substrate. The antenna unit comprises a rectangular patch, two quarter-wavelength resonators and a ground short-circuit pin. The first quarter-wavelength resonator and the second quarter-wavelength resonator are unequal in length and unequal in width and parallel to the radiating side of the rectangular patch, the ground short-circuit pin is inserted between the two quarter-wavelength resonators, andthe rectangular patch is excited by coupling feeding. The feeding point of the antenna is arranged on one quarter-wavelength resonator and fed by a copper axis probe; the rectangular patch in the antenna element is an ordinary patch antenna, and the first and second quarter-wavelength resonators have two resonant points offset from the center frequency, but do not participate in radiation. The antenna of the invention has the advantages of low cross section and simple structure, effectively increasing the antenna band width, and simultaneously having the advantages of high harmonic suppression.

Description

technical field [0001] The invention belongs to the technical field of antennas, in particular to a broadband line-polarized microstrip patch antenna with harmonic suppression. Background technique [0002] In recent years, as the key equipment of radio application systems such as communication, broadcasting, radar, and guidance, the antenna has undergone tremendous changes in function, design, and manufacturing process. Antenna is an important part of a modern communication system, and its performance has the most direct impact on the communication system. The rapid development of modern communication technology puts forward higher requirements on the performance of the antenna. [0003] Due to the development of microwave integrated circuits in recent decades, there is a need for compact antennas that are compatible with integrated circuits. Microstrip antennas have gained more favor for their advantages of light weight, conformability, easy integration, and easy matchin...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q1/48H01Q1/50
Inventor 张金栋冯敏汤普祥吴翠翠姚祺陈峤羽周雅莉陈祥云韦一方张弘毅陈国杭汪映展李光
Owner NANJING UNIV OF SCI & TECH
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