Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
BIAS voltage generation circuit for an SOI radio frequency switch










Image Number 7 for United States Patent #8131225.

A radio frequency (RF) switch located on a semiconductor-on-insulator (SOI) substrate includes at least one electrically biased region in a bottom semiconductor layer. The RF switch receives an RF signal from a power amplifier and transmits the RF signal to an antenna. The electrically biased region may be biased to eliminate or reduce accumulation region, to stabilize a depletion region, and/or to prevent formation of an inversion region in the bottom semiconductor layer, thereby reducing parasitic coupling and harmonic generation due to the RF signal. A voltage divider circuit and a rectifier circuit generate at least one bias voltage of which the magnitude varies with the magnitude of the RF signal. The at least one bias voltage is applied to the at least one electrically biased region to maintain proper biasing of the bottom semiconductor layer to minimize parasitic coupling, signal loss, and harmonic generation.








 
 
  Recently Added Patents
Hydrolases, nucleic acids encoding them and methods for making and using them
Method for using a super-slippery thin layer characterized by the method for making same
Sparse data compression
Register files for a digital signal processor operating in an interleaved multi-threaded environment
Process for production of nickel oxide-stabilized zirconia composite oxide
Brushless electric motor or generator in shell construction
Information recording medium and information processing method for accessing content with license or copyright protection
  Randomly Featured Patents
Self light-emitting device
Bilayer pressure-sensitive adhesives
Vacuum cleaner with removable dust collector, and methods of operating the same
Valve arrangement in an internal combustion engine
Pleated filter media with embossed spacers and cross flow
Safety attachment for automobile visors
Electrode and method for measuring levelling power
In-system programming architecture for a multiple chip processor
Floor mounted mixer
Bubble generator