To provide a high-frequency amplifier capable of improving a stabilization index by attenuating an unnecessary frequency band without degrading an input or output impedance even when the input or output impedance of a transistor is originally low.
The high-frequency amplifier includes an electric field effect transistor 1 whose source terminal 1a is grounded, and a stabilization circuit 2 in which a first terminal 21 is connected with the gate terminal 1b of the electric field effect transistor 1. The stabilization circuit 2 includes a second capacitor 7 connected between a second terminal 52 and a third terminal 53 of a T-type attenuator circuit 5. The second terminal 52 and a third terminal 53 of the T-type attenuator circuit 5 are connected with the gate terminal 1b and the input terminal 3 of the electric field effect transistor 1, respectively.
WO/2017/095985 | TIME GAIN COMPENSATION CIRCUIT AND RELATED APPARATUS AND METHODS |
JPWO2003013012 | Receiving machine |
WO/2023/122265 | BIDIRECTIONAL RF CIRCUIT AND METHOD OF USE |
TSURU MASAOMI
TANIGUCHI EIJI
Hamada Hatsune
Kume Teruyo
Hideo Kawamura