US 9,813,140 B2
Radio frequency transmitter
Keld Knut Lange, Oetisheim (DE)
Assigned to CommScope Technologies LLC, Hickory, NC (US)
Filed by CommScope Technologies LLC, Hickory, NC (US)
Filed on Jun. 15, 2016, as Appl. No. 15/183,574.
Claims priority of provisional application 62/180,094, filed on Jun. 16, 2015.
Prior Publication US 2017/0026104 A1, Jan. 26, 2017
Int. Cl. H04B 1/04 (2006.01); H04B 7/14 (2006.01); H04W 72/04 (2009.01); H04B 7/155 (2006.01)
CPC H04B 7/14 (2013.01) [H04B 1/04 (2013.01); H04B 7/155 (2013.01); H04W 72/0453 (2013.01); H04B 2001/0408 (2013.01)] 16 Claims
OG exemplary drawing
 
14. A radio frequency transmitter device for transmitting a radio frequency signal in a frequency band comprising at least one transmit subband and at least one receive subband, comprising:
a transmit chain circuit configured to process a transmit signal associated with the at least one transmit subband;
a power amplifier for amplifying the transmit signal;
an output port for transmitting the amplified transmit signal;
a processing circuit for calculating, from the transmit signal associated with the at least one transmit subband, a correction signal in the at least one receive subband making use of a power amplifier model modelling behavior of the power amplifier; and
a coupler for adding the correction signal to the amplified transmit signal for cancelling intermodulation products in the amplified transmit signal produced by the power amplifier.