Inventor
AOKI KAZUHARU
JP17 patents
Patents
17 patentsUS6236848B1May 22, 2001
Receiver integrated circuit for mobile telephone
ALPS ELECTRIC CO LTD24 citations92
US5926749AJul 20, 1999
Amplifier circuit having common AGC to IF and RF amplifiers for use in a transmitter
ALPS ELECTRIC CO LTD31 citations92
US5900782AMay 4, 1999
AGC voltage correction circuit
ALPS ELECTRIC CO LTD35 citations92
US5900781AMay 4, 1999
Multistage variable gain amplifier circuit
ALPS ELECTRIC CO LTD30 citations92
US5471654ANov 28, 1995
Transmitting/receiving unit having automatic gain control system with temperature compensation
ALPS ELECTRIC CO LTD34 citations92
US6608502B2Aug 19, 2003
Compact transmitter detection circuit with a wide dynamic range
ALPS ELECTRIC CO LTD46 citations91
US8018297B2Sep 13, 2011
Balanced-unbalanced conversion circuit
ALPS ELECTRIC CO LTD8 citations83
US6177837B1Jan 23, 2001
Active low-pass filter
ALPS ELECTRIC CO LTD19 citations80
US4596044AJun 17, 1986
UHF-VHF combination tuner
ALPS ELECTRIC CO LTD7 citations74
US6114921ASep 5, 2000
Double-balanced modulator and quadri-phase shift keying device
ALPS ELECTRIC CO LTD15 citations73
US5327097AJul 5, 1994
Gain control circuit
ALPS ELECTRIC CO LTD12 citations73
US4369414AJan 18, 1983
High-frequency input circuit for two inputs
ALPS ELECTRIC CO LTD16 citations73
US4581768AApr 8, 1986
VHF tuner
ALPS ELECTRIC CO LTD3 citations63
US6965759B2Nov 15, 2005
Frequency synthesizer capable of obtaining signals in three frequency bands
ALPS ELECTRIC CO LTD2 citations62
US6359518B1Mar 19, 2002
Signal level adjusting circuit using coupling stage for preventing variation from resulting in each operating point of first amplifying stage and second amplifying stage
ALPS ELECTRIC CO LTD6 citations62
US4359701ANov 16, 1982
Construction of tuning circuit in tuner
ALPS ELECTRIC CO LTD3 citations62
US7400197B2Jul 15, 2008
Gain control circuit capable of reducing change in gain due to variation of ambient temperature
ALPS ELECTRIC CO LTD0 citations38