Portable radio transceiver with diplexer-switch circuit for dual frequency band operation
US6072993A · kind A · utility
23Cited by
13References
11Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 12, 1997 |
| Grant date | Jun 6, 2000 |
| Priority date | — |
| Expiry date | Aug 12, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/406
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A portable radio transceiver selectively transmits and/or receives RF signals in two frequency bands and in two modes of operation. The radio transceiver selectively switches between two antennas for operating in either of the two modes, such as a handheld mode of operation using the transceiver's on-board antenna and battery, or a car mode of operation using an external antenna and battery. Either antenna can transmit and/or receive RF signals in the two frequency bands, such as PCS and cellular, for example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.