The AM9035a is an integrated downconverter module that covers an RF frequency range of 18 to 44 GHz. The downconverter provides an analogue IF output centred at 4 GHz, with minimum bandwidth of 2 GHz. The connectorised module includes RF preselector filters, low-noise amplifiers, programmable attenuation, LO synthesizer, power conditioning, and FPGA control.
The internal LO synthesizer requires an external 100 MHz reference and can be configured to support multi-channel coherent applications. Control is achieved with a single SPI interface, and power is supplied from an external 6 V DC supply. The module includes an RF bypass path for frequencies from 20 MHz to 18 GHz.
Mechanical dimensions of the downconverter are approximately 94 x 84 x 18 mm. The AM9035a can be used in conjunction with the AM9029 or AM9018 tuners, to support full RF frequency coverage from 20 MHz to 44 GHz. Furthermore, the AM9035a’s IF output can be digitised directly using various commercially available ultra-wideband ADCs.
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