To provide a frequency converter capable of reducing transmission losses of a high frequency signal in a high frequency semiconductor circuit without increasing a circuit scale and ensuring a wide dynamic range in which conversion efficiency for the high frequency signal rises.
When the frequency converter is provided with a plurality of frequency converters 100 constituted of a high frequency semiconductor circuit and having different gain characteristics, in each of the frequency converters 100, leakage suppressing functions of leakage suppression circuits 108 and 109 connected to mixers 101 and 102 are operated to suppress leakage of the high frequency signal, which is caused by parasitic capacity occurring in a transistor of the high frequency semiconductor circuit.
IGARASHI MASATOSHI
KOMORI HIROSHI
WATANABE TAKEAKI
TODA SATOSHI
Yoshihiro Morimoto
Toshiji Sasahara
Yohei Harada