Patent application number | Description | Published |
20080273626 | SYSTEM AND METHOD FOR PERFORMING BASEBAND PHASE SHIFTING IN A CARTESIAN FEEDBACK SYSTEM - A system and method for performing baseband phase shifting in a Cartesian feedback system includes a forward path for receiving an input baseband signal having two components, and performing up-conversion to output a RF signal; a power amplifier for amplifying the RF signal output from the forward path; and a feedback path for down-converting at least a sample of the output from the power amplifier to a feedback baseband signal comprising two components, and providing the feedback baseband signal to the forward path in order to be summed with the input baseband signal at a summing junction and before the loop filter. The forward path includes a baseband phase shifter for adjusting the baseband signal output from the summing junction in order to compensate for any phase shifts induced in the system. | 11-06-2008 |
20090289854 | NOTCHED ANTENNA STRUCTURE WITH A STEPPED SHAPED ELEMENT - An antenna assembly ( | 11-26-2009 |
20090295672 | ANTENNA AND METHOD OF FORMING SAME - An antenna and methods for manufacturing the antenna is provided. The antenna ( | 12-03-2009 |
20110007841 | RF TRANSMITTER AND METHOD OF OPERATION - A linear RF transmitter ( | 01-13-2011 |
20110076976 | RADIO FREQUENCY RECEIVER, WIRELESS COMMUNICATION UNIT AND METHOD OF OPERATION - A wireless communication unit ( | 03-31-2011 |
20120001694 | ADAPTIVE CARTESIAN LOOP TRANSMITTER FOR BROADBAND AND OPTIMAL LOOP STABILITY ADJUSTMENT - An integrated circuit includes a linearizer circuit in which excessive delay is compensated. The linearizer circuit includes a power amplifier, forward and feedback paths, and a microprocessor. A signal from the power amplifier is routed by the forward path to be transmitted while a portion of the signal to be transmitted is routed back to the power amplifier via the feedback path. The microprocessor applies phase training signals to the forward path. The microprocessor uses the phase training signals to determine the amount of delay in the linearizer circuit and alters the frequency position of poles and zeros in the linearizer circuit to compensate for the delay. The gain of the linearizer circuit is also altered by the microprocessor depending on the measured delay. | 01-05-2012 |
20120326938 | ANTENNA CONFIGURATION - Antenna apparatuses and methods used in wireless communication devices are disclosed. The antenna includes a first portion configured to be coupled to a communication device. The antenna also includes a second portion configured to be coupled to the first portion. The first portion and second portion are coupled by overlapping the first portion and second portion so as to produce an omnidirectional radiation pattern and a vertical radiation pattern. | 12-27-2012 |
20130177060 | ADAPTIVE OFF-CHANNEL DETECTOR FOR RECEIVERS - Receivers ( | 07-11-2013 |
20130315344 | RF TRANSMITTER AND METHOD OF OPERATION - A linear RF transmitter ( | 11-28-2013 |
20150029059 | SYSTEM AND METHOD FOR SHORT UHF ANTENNA WITH FLOATING TRANSMISSION LINE - A short, efficient antenna utilizing a floating coax transmission line over ground or overlapping wire feed structure for reduced antenna size for use in handheld radios. An asymmetric transmission line radiator having a length (L | 01-29-2015 |