Radio frequency power divider/combiner circuit having conductive

Details Radio frequency power divider/combiner circuit having conductive Radio frequency power divider/combiner circuit having conductive

1997-08-08

1999-12-21

Lee, Benny

Wave transmission lines and networks

Plural channel systems

Having branched circuits

333136, H01P 512

Patent

active

060054549

ABSTRACT:
A radio frequency (RF) power divider/combiner circuit prevents an unbalance in current consumption according to a variation of the load, and reduces size of a power amplifier when employed therein. In an exemplary embodiment, the RF power divider/combiner circuit includes an input terminal, first and second output terminals, a first microstrip line connected to the input terminal and a second microstrip line vertically connected to the first microstrip line. A first capacitor is connected between a middle of the second microstrip line and ground. A first inductor has a first end connected to an end of the second microstrip line, a second inductor has an end connected to another end of the second microstrip line, and a second capacitor is connected between a second end of the first inductor and a second end of the second inductor. A third microstrip line is connected between the second end of the first inductor and the first output terminal, a fourth micro-strip line is connected between the second end of the second inductor and the second output terminal, and a resistor is connected in parallel with the second capacitor.

REFERENCES:
patent: 4901042 (1990-02-01), Terakawa et al.
patent: 5126704 (1992-06-01), Dittmer et al.
patent: 5489880 (1996-02-01), Swarup
Beckwith, W., et al; "Wideband width Monolihtic Power Dividers"; Microwave Journal ; Feb. 1989; pp. 155-157, 160.
Webb, Richard, C; "Power Divider/Combiners: Small Size, Big Specs"; Microwaves Nov. 1981; pp. 67-69, 72, 73.

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