Microstrip coupler and PCB (printed circuit board)

A microstrip coupler and etching layer technology, which is applied in the electronic field, can solve the problems of increasing the production cost of the microstrip coupler, and achieve the effects of increasing the coupling strength, reducing the production cost, and widening the distance
CN110085960APending Publication Date: 2019-08-02SHENZHEN GONGJIN ELECTRONICS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHENZHEN GONGJIN ELECTRONICS CO LTD
Publication Date
2019-08-02

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Abstract

The invention provides a microstrip coupler and a PCB. The microstrip coupler comprises a wire laying layer and an etching layer laminated correspondingly, the wire laying layer is used to lay microstrip wires and forms an interdigital part, the etching layer is used to etch a defect area, the defect area is partially overlapped with the interdigital part, the defect area changes electric field and magnetic field distribution of the etching layer as well as the distribution inductance and capacitance of the microstrip wires laid on the wire laying layer laminated corresponding to the etching layer, so that the microstrip wires have band cap and slow wave characteristics, further the coupling intensity of the microstrip wires in the unit distance is increased, basis is provided for increasing the distance between the microstrip wires, and the production cost of the microstrip coupler is reduced under the condition that the coupling performance of the microstrip coupler is ensured.
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Description

technical field

[0001] The invention belongs to the field of electronic technology, in particular to a microstrip coupler and a PCB circuit board. Background technique

[0002] Couplers are commonly used devices in communication equipment and are mainly used for signal sampling. The integrated chip coupler is commonly used in traditional communication equipment. Since the chip coupler can no longer meet the miniaturization design requirements in the multilayer PCB circuit board design, the microstrip coupler came into being.

[0003] While the microstrip coupler meets the requirements of miniaturization design, it is also necessary to consider whether the RF performance index and PCB processing accuracy also meet the actual use and production requirements. In the prior art, in order to realize the strong coupling of the microstrip traces of the microstrip coupler, the distance between the microstrip traces of the microstrip coupler needs to be reduced, but the existing PCB ...

Claims

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