Title:
MIXER WITH FEEDBACK
Document Type and Number:
WIPO Patent Application WO2005064786
Kind Code:
A3
Abstract:
A method and system for increasing the compression point of a receiver by deriving a feedback signal from mixer output signals. The feedback signal prevents the receiver from going into compression on strong out-of-band or blocking signals, while enhancing the receiver gain at the desired frequency. The desired frequency coincides with the local oscillator (LO) signal and is therefore particularly applicable for, but not limited to, homodyne receivers where selectivity can be made quite narrowband. Since the selectivity is coupled to the LO, a tunable receiver may be achieved that enables selectivity over a wide range of input frequencies.
Inventors:
MATTISSON SVEN (SE)
Application Number:
PCT/EP2004/014517
Publication Date:
August 11, 2005
Filing Date:
December 21, 2004
Export Citation:
Assignee:
ERICSSON TELEFON AB L M (SE)
MATTISSON SVEN (SE)
MATTISSON SVEN (SE)
International Classes:
H03D7/14; (IPC1-7): H03D7/14
Foreign References:
| US20020163981A1 | 2002-11-07 | |||
| US5898912A | 1999-04-27 | |||
| US6310513B1 | 2001-10-30 | |||
| US6255889B1 | 2001-07-03 | |||
| US6396330B1 | 2002-05-28 |
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