Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method for calibrating a phase distortion compensated polar modulated radio frequency transmitter










Image Number 6 for United States Patent #8009762.

The present invention is a method for calibrating a phase distortion compensated polar modulated RF transmitter, which uses amplitude pre-distortion to compensate for phase distortion, called AMPM compensation. Some embodiments of the present invention may include a method for calibrating polar modulated RF transmitters that use amplitude pre-distortion to compensate for amplitude non-linearities, called AMAM compensation. The AMPM and AMAM compensations may enable the polar modulated RF transmitter to conform to RF output power tolerances, meet EVM specifications, and meet ORFS requirements. The pre-distortion calibration methods may be used to determine calibration constants by measuring phase distortion and amplitude non-linearities. During normal operation, the calibration constants may be used to provide the AMPM and AMAM compensations.








 
 
  Recently Added Patents
Traffic signal mapping and detection
Display systems with touch screens
Selecting from a plural of energy saving modes
Method and system for delivering and executing virtual container on logical partition of target computing device
Method for automatically estimating inertia in a mechanical system
Computer program and apparatus for evaluating signal propagation delays
Automatically capturing images that include lightning
  Randomly Featured Patents
Table top portion of a game housing
Outboard motor including a two speed transmission
Throttle controller
Systems and computer readable recording medium for obtaining software via a network for a multifunction image forming apparatus
Application decoding engine for computer networks
Coaxial connector with gasketed sealing cylinder
Printing hammer driver mechanism
Phase inversion test device
Casing slip joint
Rewriting apparatus control circuit