US 12,237,850 B2
Wideband-tunable RF receiver with high dynamic range and high out-of-band rejection
Hazal Yüksel, Sunnyvale, CA (US); Douglas Kirkpatrick, San Francisco, CA (US); and Dubravko Babić, Milpitas, CA (US)
Assigned to Eridan Communications, Inc., Sunnyvale, CA (US)
Filed by Eridan Communications, Inc., Mountain View, CA (US)
Filed on Sep. 23, 2022, as Appl. No. 17/934,758.
Prior Publication US 2024/0106464 A1, Mar. 28, 2024
Int. Cl. H04B 1/00 (2006.01); H04B 1/10 (2006.01); H04B 1/30 (2006.01)
CPC H04B 1/006 (2013.01) [H04B 1/10 (2013.01); H04B 1/30 (2013.01); H04B 2001/307 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A radio frequency (RF) receiver, comprising:
an antenna;
a baseband processing section including an analog processing section and a digital processing section; and
a receiver front end coupled between the antenna and the baseband processing section, the receiver front end comprising a tunable RF bandpass filter (RF BPF) coupled to the antenna and a passive mixer-first receiver (PMF-Rx) coupled between an output of the tunable RF BPF and an input of the baseband processing section,
wherein the PMF-Rx is configured to serve as both a mixer that downconverts a received RF signal to baseband and as a second RF BPF that operates synergistically with the tunable RF BPF to enhance the signal-to-noise ratio of the receiver front end.