Signal converting circuit capable of reducing/avoiding signal leakage and related signal converting method
US8922450B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2012 |
| Grant date | Dec 30, 2014 |
| Priority date | — |
| Expiry date | Jul 27, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/50
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A signal converting circuit includes: a first switching circuit; a second switching circuit; and a first balance-unbalance circuit (Balun) having a first signal terminal coupled to an antenna, a second signal terminal coupled to the first switching circuit, and a third signal terminal coupled to the second switching circuit; wherein when the first balance-unbalance circuit operates in a first signal converting mode, the first switching circuit and the second switching circuit are arranged to couple the second signal terminal and the third signal terminal, respectively, to a first signal processing circuit, and when the first balance-unbalance circuit does not operate in the first signal converting mode, the first switching circuit and the second switching circuit are arranged to couple the second signal terminal and the third signal terminal, respectively, to a reference voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.