This document describes a full spectrum receiver design for cable reception that can receive 16-32 channels across a wide bandwidth of 50MHz-1GHz using less than 1W of power. It achieves this by using a single high-speed analog-to-digital converter to digitize the full spectrum and digital signal processing to select and tune the desired channels without the need for multiple dedicated tuners.

1. HS
serializer
ADC
HS
serializer
Decimation
(BW from
1MHz to
100MHz)
MUX
2GS/s …
3GS/s
13-b
2GHz … 3GHz
HSO1
HSO2
RSSI
WB AGC
AGC_up/dwn
PLL /
CGU
Splitter
Output
S2D
RFin
RSSI
LNA+Filt
AGC_updnw
5Gb/s
5Gb/s
Full Spectrum Receiver for Cable Reception
Current cable receivers use 1 tuner per channel, or 1 tuner for N channels (N= 4 to 8 channels) bonded in a limited bandwidth
(100MHz-BW receivers) & 1 Tuner consumes ~1W
Cable Operators ask for multi-channel reception (1632 channels) over the complete cable RF band (50MHz1GHz)
at a low power consumption  FULL SPECTRUM RECEIVER
W1
W16