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Surface mounted broadside directional coupler

A technology of directional couplers and couplers, which is applied in the direction of connection devices, waveguide devices, circuits, etc., and can solve the problems of differential coupler orientation and narrow bandwidth

Inactive Publication Date: 2006-09-13
HARRIS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Different permittivity values ​​of the dielectric plate and air lead to different phase velocities between the fields, resulting in poorer coupler orientation and narrower bandwidth

Method used

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  • Surface mounted broadside directional coupler
  • Surface mounted broadside directional coupler
  • Surface mounted broadside directional coupler

Examples

Experimental program
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Embodiment Construction

[0022] Shown in Figures 1-5 is a directional coupler 20 in accordance with the present invention. The coupler 20 includes a coupler circuit board 22 having flats 22a and 22b. In the exemplary embodiment, coupler circuit board 22 is a printed circuit board (PCB). Printed circuit boards are well known in the art, and the coupler circuit board 22 may be fabricated using any suitable method. Coupler 20 is mounted on mother circuit board 24 having lands 24a and 24b. Coupler 20 is mounted so that its planes 22a and 22b are perpendicular to planes 24a and 24b of mother circuit board 24 . Other peripheral circuitry associated with the circuitry using coupler 20 is also mounted on mother circuit board 24, although not shown in FIGS. 1-5.

[0023] Coupler 20 includes first and second cross-coupling elements 26 and 28 disposed on surfaces 22a and 22b, respectively. The first cross-coupling element 26 includes a first upper rail 26a and a first lower rail 26b. The first upper rail 26...

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PUM

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Abstract

A directional coupler comprises a coupler circuit board which is mounted substantially perpendicular to the surface of a parent circuit board. First and second upper traces are disposed on the opposing surfaces of the coupler circuit board. The coupling between the upper electrically conductive traces determines the odd mode impedance of the coupler. First and second lower traces are also disposed on opposing surfaces and connected to ground. The upper and lower traces are arranged such that the even mode of the impedance is determined by the coupling between the first upper trace and the second lower trace and the coupling between the second upper trace and the first lower trace.

Description

technical field [0001] The present invention relates to a quarter-wavelength directional coupler for TEM mode, and in particular, to a coupler having coupled line elements, wherein the line elements are placed on opposite sides of a circuit board and are placed independently of the coupler The mother circuit board and the material that makes up the circuit board determine the odd and even mode impedance of the coupler. Background technique [0002] Directional couplers are four-port devices used as power dividers or combiners for electromagnetic wave transmission. Call these four ports Port 1, Port 2, Port 3, and Port 4, respectively. When a signal is input to port 1, the signal is coupled to ports 2 and 3, but not to port 4. Similarly, the signal input to port 4 is coupled to ports 2 and 3 but not to port 1 . Because there is no coupling between ports 1 and 4, these ports are called uncoupled or independent ports with respect to each other. Signals can enter, or due to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P5/18
CPCH01P5/187
Inventor 德米特里·博罗杜林蒂莫西·迪特默乔治·卡布雷拉
Owner HARRIS CORP