US 12,191,897 B2
Local oscillator (LO) generation for carrier aggregation in phased array front ends
Ashoke Ravi, Portland, OR (US); Benjamin Jann, Hillsboro, OR (US); and Satwik Patnaik, Portland, OR (US)
Assigned to Intel Corporation, Santa Clara, CA (US)
Filed by Intel Corporation, Santa Clara, CA (US)
Filed on Jan. 2, 2024, as Appl. No. 18/401,893.
Application 18/401,893 is a continuation of application No. 17/393,564, filed on Aug. 4, 2021, granted, now 11,967,980.
Application 17/393,564 is a continuation of application No. 16/550,574, filed on Aug. 26, 2019, granted, now 11,121,731, issued on Sep. 14, 2021.
Prior Publication US 2024/0137051 A1, Apr. 25, 2024
Int. Cl. H03L 7/24 (2006.01); G01R 27/06 (2006.01); H01Q 3/40 (2006.01); H03L 7/081 (2006.01); H04B 1/04 (2006.01)
CPC H04B 1/0458 (2013.01) [G01R 27/06 (2013.01); H01Q 3/40 (2013.01); H03L 7/0816 (2013.01); H03L 7/24 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A local oscillator (LO) signal generator, comprising:
a frequency synthesizer configured to generate a first reference signal having a first frequency;
a digital to time converter (DTC) configured to generate a second reference signal based upon the first reference signal, the second reference signal having a second frequency that is a fractional multiple of the first frequency;
a high-band (HB) path including a HB injection locked frequency multiplier (ILFM), the HB ILFM configured to generate one or more HB local oscillator (LO) signals having a HB LO frequency that is based upon the first frequency associated with the first reference signal; and
a low-band (LB) frequency path including a LB ILFM, the LB ILFM configured to generate one or more LB local oscillator (LO) signals having a LB LO frequency that is based upon the second frequency associated with the second reference signal.