RF amplification device

Details RF amplification device RF amplification device

2011-04-19

2011-04-19

Choe, Henry K (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including distributed parameter-type coupling

C330S310000

Reexamination Certificate

active

07928802

ABSTRACT:
An RF amplification device has amplification elements which amplify a radio frequency input signal in wireless radio communication. Transmission line transformers are coupled to one of an input electrode and an output electrode of the amplification elements and have a main line Lout arranged between the input and the output, and a sub line Lin1arranged between an AC ground point and one of the input and the output and coupled to the main line Lout. By applying an operating voltage different from the ground voltage level to the AC ground point, the operating voltage is supplied to the output electrodes of the amplification elements via the sub line from the AC ground point. In realizing a high-performance load circuit in an RF amplification device, it is possible to avoid increase of a module height of an RF module.

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