Quadrature hybrid low loss directional coupler
First Claim
Patent Images
1. A coupling device comprising:
- a circuit board having first and second surfaces and an opening formed therebetween, and having a plurality of conductive traces;
a coupler board having opposites surfaces and conductive traces;
the coupler board being mounted with the circuit board at the opening;
first and second shields positioned proximate opposite surfaces of the coupler board and circuit board and forming cavities on opposite sides of the coupler board.
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Accused Products
Abstract
A coupling device defined by an RF circuit board having a cavity formed therein and a plurality of conductive traces and a ground plane, a coupler board having opposites sides and conductive traces, and first and, second metal shields. When assembled, the coupler board is supported by the RF circuit board, and cavities are formed on opposite sides of the coupler board by the first and second metal shields.
27 Citations
32 Claims
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1. A coupling device comprising:
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a circuit board having first and second surfaces and an opening formed therebetween, and having a plurality of conductive traces;
a coupler board having opposites surfaces and conductive traces;
the coupler board being mounted with the circuit board at the opening;
first and second shields positioned proximate opposite surfaces of the coupler board and circuit board and forming cavities on opposite sides of the coupler board. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A coupling device to couple signals between various ports comprising:
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a circuit board having opposite surfaces;
an opening formed in the circuit board between the opposite surfaces, the opening being free of obstruction to form an air opening;
a coupler board positioned with the circuit board to cover a portion of the air opening to create an air cavity proximate the coupler board;
the coupler board including opposing coupling traces that form an input port, an output port, and coupled port, the traces spanning across the air cavity to coincide with the air cavity. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of integrating a coupling device into a circuit board having first and second surfaces, the method comprising:
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forming a plurality of conductive traces on a surface of the circuit board;
forming an opening intermediate the first and second surfaces;
positioning a coupler board with opposing coupling traces adjacent one of the surfaces of the circuit board to cover the opening and form an air cavity, the coupling traces coinciding with the opening and air cavity and forming an input port, output port, and coupled port;
connecting the conductive traces with the coupling traces;
positioning a shield on another surface of the circuit board opposite the coupler board to cover the air cavity. - View Dependent Claims (20, 21, 22)
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23. A signal combining device comprising:
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a coupler board with coupling traces formed on opposite surfaces thereof to form at least an input port, a direct port and a coupled port;
shields positioned proximate the opposite surfaces of the coupler board;
the shields configured to form air cavities with the coupler board at opposite surfaces of the board to surround the coupling traces with air. - View Dependent Claims (24, 25)
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26. A signal splitting device comprising:
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a coupler board with coupling traces formed on opposite surfaces thereof;
shields positioned proximate the opposite surfaces;
the shields configured to form cavities with the coupler board at opposite surfaces of the board. - View Dependent Claims (27, 28)
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29. A circuit board having first and second surfaces, and comprising:
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a ground plane formed on the first and the second surfaces;
an opening formed intermediate the first and the second surfaces; and
,a plurality of conductive traces etched from the ground plane on the first surface, and leading up to the opening;
the conductive traces configured to couple with ports of a hybrid coupler and the opening forming a cavity for the coupler.
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30. A process of assembling a coupling device comprising:
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providing a circuit board having an opening and land areas;
placing a coupler board having connective elements on the circuit board over the opening, and aligning the connective elements with the land areas;
placing a first shield over the coupler board;
soldering the first shield and coupler board to the circuit board;
placing a second shield against a surface of the circuit board opposite the coupler board; and
,soldering the second shield to be held on the circuit board. - View Dependent Claims (31, 32)
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Specification