Directional coupler

Details Directional coupler Directional coupler

1987-08-12

1989-01-17

LaRoche, Eugene R.

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333246, H01P 308

Patent

active

047990325

ABSTRACT:
A directional coupler includes a main line (1) and two conductive pads (2a, 3a) which are capacitively coupled to the main line (1) in a lumped constant fashion. The conductive chips (2a, 3a) are separated by a distance of .lambda.g/4. Signals on the conductive pads (2a, 3a) are transferred, through first and second conductive patterns (B1, B2) narrower than the main line, to an output terminal. The first conductive pattern and the second conductive pattern are different in length by 80 g/4, and a loose and directional coupling signal is obtained at the output terminal.

REFERENCES:
patent: 4288760 (1981-09-01), Beyer et al.
patent: 4701724 (1987-10-01), Martin

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