Baseband harmonic rejection circuit
US9037106B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 4, 2013 |
| Grant date | May 19, 2015 |
| Priority date | — |
| Expiry date | Jul 13, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/7236
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A circuit for baseband harmonic rejection includes multiple transconductance cells coupled to one another at outputs of the transconductance cells and configured to receive down-converted signals that vary from one another to produce a weighted current signal proportional to a voltage corresponding to a respective down-converted signal. The circuit also includes a feedback impedance coupled between an input of one of the transconductance cells and the outputs of the transconductance cells. Each of the transconductance cells has an effective transconductance of a first magnitude for frequency components of the down-converted signal arising from a first harmonic and an effective transconductance of a second magnitude less than the first magnitude for frequency components of the down-converted signal arising from harmonics at integer multiples of the first harmonic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.