# US 10,313,733 B2 · Wideband tuner architecture > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,313,733 B2 - Document ID: US10313733B2 - Status: Granted - Kind: B2 - Application number: 15/792,318 - Filed: 2017-10-24 - Published: 2018-03-01 - Granted: 2019-06-04 - Earliest claimed: 2009-04-17 - Assignees: MaxLinear, Inc. - Applicants: Maxlinear, Inc. - Inventors: Madhukar Reddy; Curtis Ling; Tim Gallagher - Web page: https://patentgrep.com/patent/US10313733B2 ## CPC - H04N 21/4263: {involving specific tuning arrangements, e.g. two tuners} - H04B 1/0014: {using DSP [Digital Signal Processor] quadrature modulation and demodulation} - H04N 5/455: Demodulation-circuits - H04N 5/50: Tuning indicators; Automatic tuning control - H04N 21/4382: {Demodulation or channel decoding, e.g. QPSK demodulation (analog front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002)} - H04N 21/4383: {Accessing a communication channel} - H04N 21/454: Content {or additional data} filtering, e.g. blocking advertisements - H04N 21/6143: {involving transmission via a satellite} - H04N 21/6193: {involving transmission via a satellite (arrangements for data linking, networking or transporting, or for controlling an end to end session in a satellite broadcast system H04B7/18526)} - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - H04B: TRANSMISSION ## Abstract A wideband receiver system comprises a wideband analog-to-digital converter (ADC) module and a digital frontend (DFE) module. The wideband ADC is configured to concurrently digitize a band of frequencies comprising a plurality of desired channels and a plurality of undesired channels. The DFE module is coupled to the digital in-phase and quadrature signals. The DFE module is configured to select the plurality of desired channels from the digitized band of frequencies, and generate an intermediate frequency (IF) signal comprising the selected plurality of desired channels and having a bandwidth that is less than a bandwidth of the band of frequencies, where the generation comprises frequency shifting of the selected plurality of desired channels. The IF signal may be a digital signal and the DFE is configured to output the IF signal via a serial or parallel interface. ## Claims ### Claim 1 A system comprising: a first analog-to-digital converter (ADC) configured to digitize a first frequency band comprising a first plurality of channels; a second ADC configured to digitize a second frequency band comprising a second plurality of channels; a digital frontend (DFE) circuit operatively coupled to the first ADC and the second ADC, wherein the DFE comprises a plurality of channel filters configured to perform selection of the one or more channels from the first plurality of channels and the one or more channels from the second plurality of channels, and wherein each one of the plurality of channel filters is a finite impulse response filter; and an upconverter being configured to: frequency shift the selected one or more channels from the first plurality of channels; and frequency shift the selected one or more channels from the second plurality of channels, wherein the frequency-shifted one or more channels from the first plurality of channels and the frequency-shifted one or more channels from the second plurality of channels are combined into an intermediate frequency (IF) signal. ### Claim 2 (depends on 1) The system of claim 1, wherein: prior to the frequency shift of the one or more channels from the first plurality of channels and the frequency shift of the one or more channels from the second plurality of channels, there is a first, greater amount of separation in frequency between the one or more channels from the first plurality of channels and the one or more channels from the second plurality of channels; and after the frequency shift of the one or more channels from the first plurality of channels and the frequency shift of the one or more channels from the second plurality of channels, there is a second, lesser amount of separation in frequency between the frequency-shifted one or more channels from the first plurality of channels and the frequency-shifted one or more channels from the second plurality of channels. ### Claim 3 (depends on 1) The system of claim 1, wherein the DFE is configured to: adjust a sample rate of the frequency-shifted one or more channels from the first plurality of channels; and adjust a sample rate of the frequency-shifted one or more channels from the second plurality of channels. ### Claim 4 (depends on 1) The system of claim 1, wherein each frequency shift of the selected one or more channels from the first plurality of channels and each frequency shift of the selected one or more channels from the second plurality of channels comprises an up-shift. ### Claim 5 (depends on 1) The system of claim 1, wherein the first plurality of channels and second plurality of channels are satellite broadcast television channels. ### Claim 6 A system comprising: a first downconverter configured to receive a first frequency band comprising a first plurality of channels; a second downconverter configured to receive a second frequency band comprising a second plurality of channels; a frontend circuit operatively coupled to the first downconverter and the second downconverter, wherein the frontend circuit comprises a plurality of channel filters configured to perform selection of one or more channels from the first plurality of channels and one or more channels from the second plurality of channels; and an upconverter being configured to: frequency shift the selected one or more channels from the first plurality of channels; and frequency shift the selected one or more channels from the second plurality of channels, wherein the frequency-shifted one or more channels from the first plurality of channels and the frequency-shifted one or more channels from the second plurality of channels are combined into an intermediate frequency (IF) signal. ### Claim 7 (depends on 6) The system of claim 6, wherein: prior to the frequency shift of the one or more channels from the first plurality of channels and the frequency shift of the one or more channels from the second plurality of channels, there is a first, greater amount of separation in frequency between the one or more channels from the first plurality of channels and the one or more channels from the second plurality of channels; and after the frequency shift of the one or more channels from the first plurality of channels and the frequency shift of the one or more channels from the second plurality of channels, there is a second, lesser amount of separation in frequency between the frequency-shifted one or more channels from the first plurality of channels and the frequency-shifted one or more channels from the second plurality of channels. ### Claim 8 (depends on 6) The system of claim 6, wherein the frontend circuit is configured to: digitize the first plurality of channels; and digitize the second plurality of channels. ### Claim 9 (depends on 6) The system of claim 6, wherein each of the frequency shift of the selected one or more channels from the first plurality of channels and the frequency shift of the selected one or more channels from the second plurality of channels comprises an up-shift. ### Claim 10 (depends on 6) The system of claim 6, wherein the first plurality of channels and second plurality of channels are satellite broadcast television channels. ### Claim 11 A method comprising: digitizing a first frequency band comprising a first plurality of channels using a first analog-to-digital converter (ADC); digitizing a second frequency band comprising a second plurality of channels using a second ADC; selecting one or more channels from the first plurality of channels and one or more channels from the second plurality of channels using one or more finite impulse response filters; frequency shifting the selected one or more channels from the first plurality of channels; frequency shifting the selected one or more channels from the second plurality of channels; and combining the frequency-shifted one or more channels from the first plurality of channels and the frequency-shifted one or more channels from the second plurality of channels into an intermediate frequency (IF) signal. ### Claim 12 (depends on 11) The method of claim 11, wherein: prior to the frequency shifting of the one or more channels from the first plurality of channels and the frequency shifting of the one or more channels from the second plurality of channels, there is a first, greater amount of separation in frequency between the one or more channels from the first plurality of channels and the one or more channels from the second plurality of channels; and after the frequency shifting of the one or more channels from the first plurality of channels and the frequency shifting of the one or more channels from the second plurality of channels, there is a second, lesser amount of separation in frequency between the frequency-shifted one or more channels from the first plurality of channels and the frequency-shifted one or more channels from the second plurality of channels. ### Claim 13 (depends on 11) The method of claim 11, wherein the method comprises: adjusting a sample rate of the frequency-shifted one or more channels from the first plurality of channels; and adjusting a sample rate of the frequency-shifted one or more channels from the second plurality of channels. ### Claim 14 (depends on 11) The method of claim 11, wherein frequency shifting comprises up shifting. ### Claim 15 (depends on 11) The method of claim 11, wherein the first plurality of channels and second plurality of channels are satellite broadcast television channels. ### Claim 16 A method comprising: receiving a first frequency band comprising a first plurality of channels; receiving a second frequency band comprising a second plurality of channels; selecting one or more channels from the first plurality of channels and one or more channels from the second plurality of channels; and frequency shifting, using a first mixer, the selected one or more channels from the first plurality of channels; and frequency shifting, using a second mixer, the selected one or more channels from the second plurality of channels, wherein the frequency-shifted one or more channels from the first plurality of channels and the frequency-shifted one or more channels from the second plurality of channels are combined into an intermediate frequency (IF) signal. ### Claim 17 (depends on 16) The method of claim 16, wherein: prior to the frequency shifting of the one or more channels from the first plurality of channels and the frequency shift of the one or more channels from the second plurality of channels, there is a first, greater amount of separation in frequency between the one or more channels from the first plurality of channels and the one or more channels from the second plurality of channels; and after the frequency shifting of the one or more channels from the first plurality of channels and the frequency shift of the one or more channels from the second plurality of channels, there is a second, lesser amount of separation in frequency between the frequency-shifted one or more channels from the first plurality of channels and the frequency-shifted one or more channels from the second plurality of channels. ### Claim 18 (depends on 16) The method of claim 16, wherein the method comprises: digitizing the first plurality of channels; and digitizing the second plurality of channels. ### Claim 19 (depends on 16) The method of claim 16, wherein frequency shifting comprises an up shifting. ### Claim 20 (depends on 16) The method of claim 16, wherein the first plurality of channels and second plurality of channels are satellite broadcast television channels.