The World Leader in High Performance Signal Processing

The World Leader in High Performance Signal Processing Solutions AD-FRQCVT 1 Low Frequency Adapter for FMCOMM 3 Initial Evaluation Results Benjamin Sam, Charly El-Khoury 3/18/2015

AD-FRQCVT 1 Standalone Rx Conversion Gain Measurement 20 Conversion Gain (d. B) 15 10 5 Gain 0 -5 -10 0 2 10 20 30 40 50 Fin (MHz)) 60 70 80 90 100

Standalone Rx P 1 d. B Measurement (Fin=70 MHz) 15 Pout (d. Bm) 10 5 Pout SSG-1 0 Gain -5 -10 -15 3 -11 -9 Pin (d. Bm) -7 -5 -3

Standalone Tx Output Spectrum u Tx frequency set to 70 MHz u Fin=370 MHz, Pin=-15 d. Bm u Found Reference Spurs at +/-730 k. Hz 4

System Evaluation: Tx Output u Output Level: adjustable with TX Ch 2 Attenuation l FTX = 25 MHz l 0 d. B Attn => Po = +8. 1 d. Bm l 80 d. B Attn => Po = -73 d. Bm u Pout is flat to 1 d. B from 20 -100 MHz, but peaks up by 6 d. B at 2 MHz, due to FRQCVT 1 gain flatness u Rx setting changed from 1 -100 MHz, no additional spur observed (<-85 d. Bm) u Rx input varied from 1 -100 MHz, no additional spur observed 5

System Evaluation: Tx Output u Output frequency is low by 1 MHz, with two spurs l Set to 25 MHz, got 24, 25 & 26 MHz harmonics is 50 d. B down u Came from AD 9361 Tx Output, with Fo modulated by DDS u If DDS is turned off, only LO feedthrough remains (-50 d. Bm) at output of AD 9361 FRQCVT 1 output 25 MHz u 2 nd 6 AD 9361 TX 2 output 370 MHz