US Patent No: 4,521,912

Number of patents in Portfolio can not be more than 2000

Low power indicating circuit for a radio transmitter

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Importance

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Abstract

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Low power for a radio transmitter is indicated by an output power detector voltage falling below a low power reference voltage derived from an existing power control circuit.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
ERICSSON GE MOBILE COMMUNICATIONS INC.LYNCHBURG, VA375
GENERAL ELECTRIC COMPANYSCHENECTADY, NY31051

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Faulkenberry, Wayne J Lynchburg, VA 2 32
Franke, Earnest A Largo, FL 9 106

Cited Art Landscape

Patent Info (Count) # Cites Year
 
BIRD ELECTRONIC CORPORATION (1)
4,274,156 Monitor for RF transmitter 12 1978
 
MOTOROLA, INC. (1)
4,353,037 Amplifier protection circuit 21 1980
 
Nippon Electric Co., Ltd. (1)
4,392,245 Radio transmitter having an output power control circuit 52 1980

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
NEC CORPORATION (5)
4,709,404 Battery-powered radio communication apparatus capable of prolonging the communicable state thereof 22 1985
4,761,824 Battery-powered mobile communications apparatus having transmitter reset function 17 1986
5,101,176 Burst control circuit for use in TDMA communications system 11 1991
6,178,309 Electronic device having an AGC loop 1 1997
6,263,200 Radio terminal apparatus equipped with battery power saving function, and mobile communication system using the same 30 1997
 
PINE VALLEY INVESTMENTS, INC. (3)
5,752,198 Single site, split location trunked radio communications system 5 1994
5,689,801 Power monitoring system for a single site, split location trunked radio communication system 6 1994
5,805,976 Single site, split location trunked radio communications system 6 1996
 
KABUSHIKI KAISHA TOSHIBA (2)
4,933,963 Radio telephone apparatus 18 1988
RE36712 Radio telephone apparatus 6 1997
 
LUCENT TECHNOLOGIES INC. (2)
5,812,936 Energy-efficient time-division radio that reduces the induction of baseband interference 31 1995
5,740,165 Wireless TDMA transmitter with reduced interference 23 1996
 
CANON KABUSHIKI KAISHA (1)
5,126,688 Power amplifying apparatus for wireless transmitter 64 1991
 
ERICSSON GE MOBILE COMMUNICATIONS INC. (1)
5,524,275 Averaged RF exposure control 30 1993
 
Hazeltine Corporation (1)
4,983,981 Active array element amplitude stabilization 20 1989
 
OPTIS WIRELESS TECHNOLOGY, LLC (1)
6,047,168 Device and method for radio transmitters 37 1997
 
SAMSUNG ELECTRONICS CO., LTD. (1)
5,239,692 Radio frequency transmitter capable of sensing abnormal state for use in a wireless security system 5 1989
 
SONY CORPORATION (1)
5,175,875 Radio communication apparatus with programmable signal modulation 30 1990
 
SPINEL EKTRONIX LLC (1)
5,650,669 Portable computer/radio power management system 22 1996
 
UNWIRED PLANET, LLC (1)
6,169,880 Method and system of load sharing and prioritization of radio repeaters 16 1996
 
Other [Check patent profile for assignment information] (1)
5,020,134 CATV signal distribution system and local status monitor therefor 8 1989