Radio communication apparatus comprising a single level controller
US5201070A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 20, 1990 |
| Grant date | Apr 6, 1993 |
| Priority date | — |
| Expiry date | Apr 20, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H60/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A radio communication apparatus includes a transmitting portion supplied with input baseband signals for selectively transmitting the input baseband signals in response to a selection signal. The transmitting portion includes a selector for selecting one of the input baseband signals as a selected baseband signal in response to the selection signal. A level controller has a controllable gain and controls the selected baseband signal so that the selected baseband signal has a level which is determined by the controllable gain. A gain controller has predetermined gains in correspondence to the input baseband signals and controls the controllable gain in response to the selection signal so that the controllable gain becomes equal to one of the predetermined gains that corresponds to the selected baseband signal. A converter converts the selected baseband signal into a radio signal carrying the selected baseband signal. The gain controller may have a memory for memorizing the predetermined gains. Responsive to the selection signal, a reading circuit reads from the memory, as a read-out gain, one of the predetermined gains that corresponds to the selected baseband signal. A control circ…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.