V-segment RF modulator

The V-band RF modulator is a modulator with an output frequency in the VHF band range, as shown in Figure 5-1.
    The frequency of the V-segment radio frequency oscillator is lower than that of the U-segment oscillator, so it can be made into an oscillation circuit unit, all made in
an integrated circuit . TA7673P is an integrated circuit that completes radio frequency modulation . The video signal is input from the @ pin to In ICI, video clamping
and white peak limiting are first performed to clamp the sync head at a certain level and obtain a stable amplitude, which is then modulated on the radio frequency carrier. ◎Pin and ⑩Pin
are connected to the 4-channel and 3-channel surface acoustic wave resonators respectively. The same circuit in Icl forms radio frequency oscillation. The ⑦ pin oscillates at a high level and the 4-channel image
radio frequency signal is output from the @ pin.