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10Mbps BPSK ZIF transceivers for 1.2GHz, 2.3GHz and 3.4GHz
Matjaz Vidmar, S53MV
8. Testing BPSK transceivers
The 1.25GHz BPSK receiver under test at 1245.1MHz -80dBm 500Hz ON/OFF:
AGC response of both channels at 1245.1MHz -80dBm 500Hz ON/OFF. The AGC-settling time is around 50 microseconds without instabilities:
Quadrature ellipse of both channels at 1245.1MHz -80dBm 500Hz ON/OFF. The central dot is noise with the source OFF:
AGC response of both channels at 1245.1MHz -50dBm 500Hz ON/OFF. The AGC-settling time is around 50 microseconds without instabilities:
Quadrature ellipse of both channels at 1245.1MHz -80dBm 500Hz ON/OFF. The central dot is noise with the source OFF:
The 3.41GHz BPSK receiver under test at 3405.2MHz -60dBm 500Hz ON/OFF:
AGC response of both channels at 3405.2MHz -60dBm 500Hz ON/OFF. The AGC-settling time is around 100 microseconds with unsymmetrical overshoot due to the LO crosstalk:
Quadrature ellipse of both channels at 3405.2MHz -80dBm CW. Clean picture with the source always ON:
Quadrature ellipse of both channels at 3405.2MHz -50dBm CW. Clean picture with the source always ON:
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