Receiver
US6573864B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 23, 2001 |
| Grant date | Jun 3, 2003 |
| Priority date | — |
| Expiry date | Oct 23, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q3/267
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A receiver is provided which can avoid demodulation performance from deteriorating due to changes in circuit constants caused by changes over time and temperature-dependent changes, prevent an increase in the receiver size, and realize a cost reduction. A switch control section is provided to perform control such that an input terminal of one of a plurality of phase varying circuits is selectively connected through a first switch circuit to any of an output terminal of an RF amplifier and a local signal output terminal of a local signal generating circuit, whereby the one phase varying circuit serves as a calibration circuit in the calibration processing that is executed in the non-reception mode. Also, the output terminal of the one phase varying circuit is selectively connected through a second switch circuit or a third switch circuit to any of one input terminal of a signal combiner and a first input terminal of a multi-port junction circuit in a multi-port direct conversion demodulating section.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.