Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Radio frequency bus leveling system










Image Number 7 for United States Patent #5546050.

A bus leveling system for automatically monitoring and maintaining the amplitude of a radio frequency (RF) signal carded on a bus. A two-stage variable gain amplifier (64) is connected in series with the bus. Each stage of the variable gain amplifier is constructed with a PIN diode (84, 86) in a feedback path of the stage. The amplification of the variable gain amplifier is varied by the injection of current into the feedback path to adjust the resistance of the PIN diodes. A control circuit having an RE detector (78) is provided to monitor and adjust the gain generated by the variable gain amplifier. Preferably, the control circuit and the variable gain amplifier are incorporated into an Application Specific Integrated Circuit (ASIC) (62). The RF detector is constructed of two Gilbert multipliers (202, 204) to minimize errors caused by operating condition changes, including variations in power supply voltage, temperature, or process.








 
 
  Recently Added Patents
Silicone hydrogel, lens for eye and contact lens
Data processing method
Network decoys
Article based on a composition containing a crosslinked blend of elastomers
Compounds with (1 E, 6E)-1,7-bis-(3,4-dimethoxyphenyl)-4,4-disubstituted-hepta-1,6-diene-3,5-d- ione structural scaffold, their biological activity, and uses thereof
Protecting information written to recording medium
Multi-bank queuing architecture for higher bandwidth on-chip memory buffer
  Randomly Featured Patents
Method of producing partially hydrolyzed acrylamide polymers
Image processing apparatus, function offering method and computer program product
Macropolycyclic rare earth complexes and application as fluorescent tracers
Patient turning apparatus
Data synchronizing buffers for data processing channels
Ultrasound atomization system
Image recording apparatus
Method of bringing about sedation and/or analgesia in a mammal
CDMA base station assisted soft handoff
Fuser for fixing toner on recording paper with heat and pressure