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Low-insertion loss dual-frequency microstrip antenna

A microstrip antenna and circuit layer technology, applied in the microwave field, can solve the problem that the communication system cannot meet the microstrip antenna index requirements, and achieve the effects of sharp frequency selectivity, low insertion loss, and small structure size.

Inactive Publication Date: 2019-10-08
WUHAN BINHU ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, with the continuous development of electronic technology, there are more and more applications of dual-band technology (such as electronic tags and mobile phone antennas). Therefore, there is a demand for dual-band microstrip antennas. Design, the insertion loss is generally -0.5dB ~ -1.5dB, and some even reach -2.5dB, which can no longer meet the increasingly high index requirements of the communication system for the microstrip antenna

Method used

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] figure 1 with image 3 The front view and side view of the dual-band microstrip antenna circuit board are respectively, in which the entire area contained by the outer frame is the dielectric layer 1, and the dotted line part is the circuit layer 2 and the bottom layer 3, and the circuit layer 2 and the bottom layer 3 are distributed in the dielectric layer 1 two sides. The circuit layer 2 of the present invention is coated with copper foil and the surface of the copper foil is gold-plated. The thickness of the copper foil is 0.035mm, and the thickness of the gold-plated layer is not less than 0.2um.

[0019] figure 2 It is a schematic diagram of the dielectric layer 1, the entire rectangular area is filled with dielectric, the material is PTFE Ceramic (polytetrafluoroethylene ceramic), the dielectric constant is 10.2, and the thickness is 1...

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Abstract

The invention relates to the field of microwaves, and particularly relates to a low-insertion loss dual-frequency microstrip antenna, which can be applied to a communication product. A circuit layer comprises a left circuit layer and a right circuit layer, and the left circuit layer has a vertically symmetrical structure except for a first port; the right circuit layer is obtained by rotating theleft circuit layer by 180 DEG around a coordinate origin, and the X axis of the coordinate system is located on the horizontal center line of the left circuit layer, and the Y-axis is 0.18 mm away from the left circuit layer. Impedance matching is optimized through changing the position of a feeding point, and the insertion loss index is greatly improved.

Description

technical field [0001] The invention relates to the microwave field, in particular to a low-insertion-loss dual-frequency microstrip antenna, which can be applied to communication products. Background technique [0002] The antenna is an important component of the wireless communication system, and its performance is directly related to the entire communication system, requiring good loss characteristics and high frequency selectivity. A general microstrip antenna has only one frequency band, which can meet the regular use requirements of communication products. [0003] However, with the continuous development of electronic technology, there are more and more applications of dual-band technology (such as electronic tags and mobile phone antennas). Therefore, there is a demand for dual-band microstrip antennas. Design, the insertion loss is generally -0.5dB ~ -1.5dB, and some even reach -2.5dB, which can no longer meet the increasingly high index requirements of the communi...

Claims

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Application Information

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IPC IPC(8): H01Q1/36H01Q1/38H01Q13/08
CPCH01Q1/36H01Q1/38H01Q13/08
Inventor 许卫张建明李宏斌沈金成程浩然伍进进罗华辛鹏
Owner WUHAN BINHU ELECTRONICS