Low noise image reject mixer and method therefor
US7457605B2 · kind B2 · utility
25Cited by
27References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2004 |
| Grant date | Nov 25, 2008 |
| Priority date | — |
| Expiry date | Aug 3, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03D7/165
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A receiver (200) includes a transconductance mixer (310), a polyphase filter (320), and a transimpedance amplifier (330). The transconductance mixer (310) mixes a radio frequency (RF) voltage signal into a current signal having a plurality of phases using a local oscillator signal. The polyphase filter (320) filters the current signal to provide a filtered current signal. The transimpedance amplifier (330) converts the filtered current signal into an output voltage signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.