CPC H04B 1/7113 (2013.01) [H04B 1/7073 (2013.01); H04B 1/71 (2013.01)] | 14 Claims |
1. A platform comprising:
a node comprising:
a satellite communication (SATCOM) antenna configured to transmit and receive communications using a beyond line of sight (BLOS) waveform, the SATCOM antenna including a first antenna element and a second antenna element;
a software-defined radio (SDR) configured to support transmit and receive communications using the BLOS waveform, wherein the BLOS waveform is in an ultra-high frequency (UHF) band and is a code-division multiple access (CDMA) direct sequence spread spectrum (DSSS) waveform;
a SATCOM radio frequency (RF) amplifier; and
a UHF diversity combiner including:
a radio frequency (RF) transfer switch;
a first receive path for analog signals from the first antenna element, the first receive path including a first analog band-pass filter, a first low-noise amplifier (LNA), and a first analog-to-digital converter (ADC);
a second receive path for analog signals from the second antenna element, the second receive path including a second analog band-pass filter, a second LNA, and a second ADC;
a processor configured to generate a combined digital signal by applying a phase offset and a weight factor to digital signals from the first receive path and the second receive path;
a digital-to-analog converter (DAC) coupled to the processor;
a transmit path for analog signals from the SATCOM RF amplifier, the transmit path including a third analog band-pass filter; and
a fourth analog band-pass filter communicatively coupled between the DAC and the SDR.
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