Title:
METHOD AND APPARATUS FOR CONVERSION OF RADIO FREQUENCY (RF) SIGNALS USING APERIODIC MIXING SIGNALS
Document Type and Number:
WIPO Patent Application WO2003019800
Kind Code:
A3
Abstract:
There is a need for an inexpensive, high-performance, fully-integrable, multi-standard transceiver. The invention provides a topology that satisfies this need, consisting of: an active mixer, followed by a high pass filter, and a passive mixer. The input signal is modulated up, or demodulated down, using a pair of complementary, aperiodic mixing signals. The use of aperiodic mixing signals allows a fully-integrated transceiver to be built. Several embodiments of the active mixer are also presented, including those having electrically-adjustable performance and allowing multiple RF signal inputs. This allows the topology of the invention to be employed in multi-band, multi-frequency applications, while still providing high performance.
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Inventors:
MANKU TAJINDER (CA)
LING YANG (CA)
KUNG WILLIAM (CA)
LING YANG (CA)
KUNG WILLIAM (CA)
Application Number:
PCT/CA2002/001316
Publication Date:
October 09, 2003
Filing Date:
August 28, 2002
Export Citation:
Assignee:
SIRIFIC WIRELESS CORP (CA)
MANKU TAJINDER (CA)
LING YANG (CA)
KUNG WILLIAM (CA)
MANKU TAJINDER (CA)
LING YANG (CA)
KUNG WILLIAM (CA)
International Classes:
H03D7/14; H04B1/28; (IPC1-7): H03D7/16
Domestic Patent References:
| WO2001017120A2 | 2001-03-08 |
Foreign References:
| US5862173A | 1999-01-19 | |||
| US5325394A | 1994-06-28 | |||
| EP0632611A2 | 1995-01-04 | |||
| US5414728A | 1995-05-09 |
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