Fully integrated two-way radio transmitter utilizing current mode transmit buffer and method of using same
US5893027A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 5, 1996 |
| Grant date | Apr 6, 1999 |
| Priority date | — |
| Expiry date | Nov 5, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/04
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A wideband fully integrated two-way radio transmitter (100) includes a voltage controlled oscillator (VCO) (101) for providing a voltage at a radio frequency. A divider (103) is used reducing the radio frequency (RF) signal from the VCO to a an intermediate frequency. A voltage-to-current converter is used for changing the voltage of the intermediate frequency RF signal to an RF current. A transmit buffer is then used for amplifying the RF current supplied by the voltage-to-current converter for amplification by a power amplifier. The fully integrated current mode transmit buffer offers the advantage of amplification over a large bandwidth while providing isolation between the transmit buffer and the VCO.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.