Radio frequency amplifier with effective decoupling

Details Radio frequency amplifier with effective decoupling Radio frequency amplifier with effective decoupling

2011-07-26

2011-07-26

Choe, Henry K (Department: 2817)

Amplifiers

Involving structure other than that of transformers per se

With capacitive structure

C330S307000

Reexamination Certificate

active

07986184

ABSTRACT:
A variety of circuits, methods and devices are implemented for radiofrequency amplifiers. According to one such implementation, a radiofrequency amplifier circuit is implemented in a SMD package. The circuit amplifies a radiofrequency signal having a base-band portion and a plurality of carrier signals frequency-spaced larger than the base-band bandwidth. The circuit includes a radiofrequency transistor connected to a circuit output having a parasitic output capacitance. The source-drain terminal is electrically connected to the circuit output. An internal shunt inductor provides compensation for the parasitic output capacitance. A high-density capacitor is connected between the internal shunt inductor and a circuit ground. The high-density capacitor has a terminal with a surface area can be at least ten times that of a corresponding planar surface.

REFERENCES:
patent: 5352991 (1994-10-01), Lipschultz et al.
patent: 7084708 (2006-08-01), Sugiura et al.
patent: 7898338 (2011-03-01), Blednov

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