Description

Wideband RF amplifiers require external coupling capacitors and an RF choke to supply bias to the output transistor collector.  As the frequency of operation is reduced: the choice of these components must be modified to maintain proper gain and linearity in the device.  This design provides the circuit modification recommendations for operating a wideband RF amplifier device like  the TRF37x73 in the low frequency range.  A full complement of testing over temperature and voltage is provided for very low frequencies (1 MHz - 50 MHz) and intermediate frequencies (20 MHz - 400 MHz) to illustrate the effectiveness of the design.