RF power divider

Details RF power divider RF power divider

1998-03-17

2000-04-25

Gensler, Paul

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333128, H01P 512

Patent

active

060549068

ABSTRACT:
An RF power divider is provided for use in a UHF-band high-power amplifier of a radio transmitter. The RF power divider includes: a single input port; first and second output ports; a first microstrip line coupled to the input port; first and second coils coupled in parallel to an output side of the first microstrip line; a second microstrip line coupled between an output side of the first coil and the first output port; a third microstrip line coupled between an output side of the second coil and the second output port; a first capacitor coupled between a ground and a contact point of the first microstrip line and the first and second coils; a resistor coupled between a contact point of the first coil and the second microstrip line, and a contact point of the second coil and the third microstrip line; and a second capacitor coupled in parallel to the resistor. Accordingly, the present invention provides a Wilkinson power divider implemented in a concentrated integer equivalent circuit, in which .lambda./4 lines are formed by the coils and the capacitors being lumped elements instead of microstrip lines.

REFERENCES:
patent: 4556856 (1985-12-01), Presser
patent: 4875024 (1989-10-01), Roberts
patent: 5430418 (1995-07-01), Blodgett
patent: 5469129 (1995-11-01), Dydyk
R.C. Webb, Power Divider/Combiners: Small Size, Big Specs, Microwaves, Nov. 1981, pp. 67-74 333-128.

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