Instrument LO used as alignment signal source

摘要

A system can include an input signal source, a local oscillator (LO), and an intermediate frequency (IF) receiver to receive an input signal from the input signal source and an LO signal from the LO. The IF receiver can include a switch to switch between the first and second inputs to provide an output. The IF receiver can generate a calibration signal from the LO signal.

主权项

1. A system, comprising:
an input signal source configured to provide an input signal; a local oscillator (LO) configured to provide an LO signal; and an intermediate frequency (IF) receiver, the IF receiver comprising:
a first input configured to receive the input signal from the input signal source;a second input configured to receive the LO signal from the LO;a first mixer configured to generate a calibration signal from the LO signal;a switch component configured to switch between the input signal and the calibration signal to provide a radio frequency (RF) signal;a power splitter coupled between the first mixer and the switch component; anda second mixer configured to generate an IF signal from the RF signal based on the LO signal.