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This router will take signals from incoming news feeds and upconvert them while also handling frame synchronization.
The main task handled by the chips is to upconvert standard 1080p full-HD content to lossless 4K resolution, Toshiba claims.
Many digital generators instead produce a noise signal at baseband and upconvert to the RF frequencies required.
The local oscillator is self-contained and incorporates a Chand VCO/prescaler, and all necessary frequency multiplication to upconvert the VCO output to the desired LO band for proper Rx and Tx mixing.
The approach chosen was to upconvert the input RF frequency segment of interest to a first intermediate frequency (IF) above the maximum input frequency, using a high-side local oscillator (LO) frequency.
It is also possible to use more than two steps to upconvert the baseband signal to RF.