US 12,237,858 B2
Mobile devices with dual conversion of multiple frequency bands using a shared intermediate frequency
Dominique Michel Yves Brunel, Paris (FR); and Florinel G. Balteanu, Irvine, CA (US)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by Skyworks Solutions, Inc., Irvine, CA (US)
Filed on Mar. 24, 2022, as Appl. No. 17/656,385.
Claims priority of provisional application 63/200,746, filed on Mar. 25, 2021.
Prior Publication US 2022/0311469 A1, Sep. 29, 2022
Int. Cl. H04B 1/3827 (2015.01); H04B 1/00 (2006.01)
CPC H04B 1/3833 (2013.01) [H04B 1/0075 (2013.01); H04B 1/0089 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A mobile device comprising:
a frequency range two front end system including a first local oscillator configured to upconvert a first intermediate frequency transmit signal to generate a first radio frequency transmit signal of a first frequency band in fifth generation frequency range two, and a second local oscillator configured to upconvert a second intermediate frequency transmit signal to generate a second radio frequency transmit signal of a second frequency band in fifth generation frequency range two, the first frequency band and the second frequency band being different frequency bands; and
a transceiver configured to generate the first intermediate frequency transmit signal and the second intermediate frequency transmit signal on a common intermediate frequency, the transceiver further configured to generate the first intermediate frequency transmit signal based on a first baseband transmit signal for the first frequency band and to generate the second intermediate frequency transmit signal based on a second baseband transmit signal for the second frequency band, the transceiver including a shared local oscillator configured to provide frequency conversion for both upconverting the first baseband transmit signal to generate the first intermediate frequency transmit signal and upconverting the second baseband transmit signal to generate the second intermediate frequency transmit signal, the first intermediate frequency transmit signal and the second intermediate frequency transmit signal being non-overlapping at the common intermediate frequency.