RF-to-BB-current-reuse wideband receiver with parallel N-path active/passive mixers
US9356636B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2015 |
| Grant date | May 31, 2016 |
| Priority date | — |
| Expiry date | Feb 18, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D7/165
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A single-ended-input current-reuse wideband receiver comprising (1) a stacked Radio Frequency to Baseband (RF-to-BB) front-end with an 8-path active mixer realizing RF amplification, harmonic-recombination (HR) down-conversion, and BB filtering in the current domain for better linearity and power efficiency; (2) a feedforward 8-path passive mixer enabling LO-defined input impedance matching without external components, while offering frequency-translated bandpass filtering and noise cancelling; (3) a single-MOS pole-zero lowpass filter (LPF) permitting both RF and BB filtering at low voltage headroom consumption, while easing the tradeoff between the in-/out-of-band linearity; and (4) a BB-only two-stage HR amplifier boosting the 3rd and 5th harmonic rejection ratios (HRR3,5) with low hardware intricacy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.