Test Results
The designs were tested initially using the Agilent Signal Generators available in the lab. One of the generator was used to generate a 5MHz sine wave which was used as an input into the I channel of the modulator. The spectrum analyzer was used to monitor the signal at various stages in the transmission and reception process. The resulting signal at the I channel of the demodulator in the receiver end was observed using a Cathode Ray Oscilloscope.
5.7 GHz Test 1 Results
Based on the results of Test 1, we decided to switch the positions of the amplifier and 70 MHz band pass filter on the receiver end. This improved the quality of the received sine wave.
The 2.4 GHz design was tested again after switching the amplifier and band pass positions. The LO source for the mixer was provided using the NOVA Source.
2.4 GHz Test 2 Results