DRR1-23XX

This digital radio receiver module DRR1-23XX provides the RF receive and down conversion function for 23 GHz digital radios. These DRR1-23XXs offer excellent phase noise performance and can be easily phase locked to a frequency reference. The receiver module provides an output power of 3ÊdBm at the IF frequency and is ideal for use in radios using 2 and 4 level FSK modulation. The excellent low noise figure is achieved by using the Hewlett-Packard PHEMT MMIC technology coupled with an image reject mixer. The DRR1-23XX features an integrated ultra low noise silicon bipolar VCO operating in the S/C band as the local oscillator. A portion of the oscillator output is coupled off and is applied to a frequency divider network. The low frequency output from the frequency divider can then be easily used to phase lock the source. The local oscillator output is applied to a frequency multiplier network to produce the desired LO frequency to the mixer.