Multimode receiver with complex filter
US9287912B2 · kind B2 · utility
0Cited by
12References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Mar 15, 2016 |
| Priority date | — |
| Expiry date | Apr 16, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L27/2647
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
One aspect of the present invention includes a radio frequency (RF) receiver having a first mixer and a second mixer. The first mixer may be an I-mixer and the second mixer a Q-mixer for downconverting the received RF signal. An impedance circuit is disposed between the first mixer and the second mixer to decouple the channels. In another aspect of present invention, the RF receiver includes a digital filter having at least one complex coefficient. The digital filter exhibits asymmetrical frequency response, and may be used to compensate the asymmetrical frequency response of another filter in the RF receiver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.