Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion
Patent
1997-09-29
2000-03-28
Trost, William G.
Telecommunications
Receiver or analog modulated signal frequency converter
Frequency modifying or conversion
330300, 455323, H04B 128
Patent
active
060442557
ABSTRACT:
A radio frequency circuit is disclosed which includes a low-noise amplifier and a mixer integrated on the same semiconductor chip by using a silicon BiCMOS process. The low-noise amplifier has a silicon bipolar junction transistor and the mixer has a silicon MOS type field effect transistor. In the radio frequency circuit, the mixer can include two silicon MOS type field effect transistors one of which has a source connected to a drain of the other silicon MOS type field effect transistor and a gate of one silicon MOS type field effect transistor is supplied with a local signal and a gate of the other silicon MOS type field effect transistor is supplied with a radio frequency signal amplified by the low-noise amplifier.
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Hiroshige Kenji
Iyama Yoshitada
Kawahara Tadashi
Ono Masayoshi
Suematsu Noriharu
Mitsubishi Denki & Kabushiki Kaisha
Trost William G.
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