RF Transmitter Schematic

The RF transmitter stage takes the I/Q modulated signal as input and outputs the signal mixed with the carrier wave, amplified and filtered. Here is the left side of the RF Transmitter schematic:

This part of the RF transmitter contains the following elements, two on the System nonlinear RF library and one on the Nexxim component library:

• An amplifier on the System nonlinear RF library provides a 10dB gain.
• A mixer on the System nonlinear RF library mixes the LO frequency (9GHz) with the up-shifted data around 1GHz.The mixer adds a conversion gain from RF (in) to IF(out) of 5dB and a noise figure of 6dB.
• A third-order Chebyshev bandpass filter on the Nexxim component library. The filter is set to pass frequencies between 9GHz and 11GHZ with a maximum inband ripple of 0.5dB.

Here is the right side of the RF Transmitter schematic:

This part of the RF transmitter contains the following elements, one on the System nonlinear RF library and one on the Nexxim component library:

• Another amplifier on the System nonlinear RF library provides a 10dB gain post-filter.
• A fifth-order Chebyshev bandpass filter on the Nexxim component library. The filter is set to pass frequencies between 9.5GHz and 10.5GHZ, this time with a maximum in-band ripple of 0.05dB.
• A system probe, channel, is inserted to enable you to view the output of the RF transmitter.
• An adjacent channel power ratio probe, ch_acpr, is inserted to enable you to view the in-band and out-of-band power outputs on the RF transmitter.
• An average power probe, avg_in, is inserted to enable you to view the average output power on the RF transmitter.