(Solved): The figure below shows a standard signal control configuration using an IQ mixer, where a controlla ...
The figure below shows a standard signal control configuration using an IQ mixer, where a controllable low-frequency signal (defined by the signals injected into the I and Q mixer ports) is converted into a controllable high-frequency signal using a strong fixed high-frequency "local oscillator" signal (labelled LO), with the signal at the high-frequency output (labelled RF) is then given by: VRF (t) = VI (t) ALO COS(2?. fLot) + vo(t) ALo sin (27. fLot) AWG 1 2 I LO RF With the LO frequency set to fLO = 6.826 GHz, you send in the following signals into the I and Q quadratures respectively (f1 = 12.34 MHz and f2 = 23.03 MHz): Q
With the LO frequency set to fLO = 6.826 GHz, you send in the following signals into the I and Q quadratures respectively (f1 = 12.34 MHz and f2 = 23.03 MHz): vi (t) = cos(2?. fit) + cos(2?. f?t) vo(t) = sin(2n. fit) - sin(27. f?t) Calculate the two signal frequencies that appear in the RF output port. Give your answers to 3 decimal places in GHz. [Hint: cos(A+B) = cos A cos B sin A sin B] Enter a value of 0 in the answer box to this question and upload your working in the box to the question below.