Philips bfg480w 900mdrv free download

File name bfg480w_900mdrv.pdf

H Philips Semiconductors B.V. Report nr. : RNR-45-98-B-0703 Author : T.F. Buss / J.Bouwman Date : 28-10-1998 Department : Development DSC-N 900 MHz Driver with the BFG480W Abstract: This application note contains an example of a driver, designed for a frequency f=900MHz. At f=900 MHz: The output power Pout11dBm, the Noise Figure NF3.2dB, the Gain S21 16dB and the OIP325dBm. VSWRin 1:2.0, VSWRout 1:1.4 0. Introduction With the new Philips silicon bipolar double poly BFG400W 5th generation series, it is possible to design driver-amplifiers and PA's for high frequency applications with a low supply voltage. These amplifiers are well suited for the new generation low voltage high frequency wireless applications. In this note an example with the BFG480W driver amplifier will be given. This amplifier is designed for a working frequency of 900 MHz. 1. 900 MHz Driver with the BFG480W Designing the circuit: The circuit is designed to show the following performance: transistor: BFG480W Vce~2V, Ic~60mA, VSUP=3.0V freq=900 MHz Gain~16dB VSWRi<1:2 VSWRo<1:2 OIP3>+20dBm The outputmatching is realised with a LC-combination. Also extra emitter-inductance on both emitterleads (