# US 2022/0158676 A1 · Rf downconverter-tuner > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2022/0158676 A1 - Document ID: US20220158676A1 - Status: Published application - Kind: A1 - Application number: 16/952,462 - Filed: 2020-11-19 - Published: 2022-05-19 - Earliest claimed: 2020-11-19 - Assignees: ThinkRF Corporation - Applicants: ThinkRF Corporation - Inventors: Nikhil Adnani; Gilbert Brunette - Web page: https://patentgrep.com/patent/US20220158676A1 ## CPC - H04B 1/28: the receiver comprising at least one semiconductor device having three or more electrodes - H03D 7/161: {all the frequency changers being connected in cascade} - H03D 7/18: Modifications of frequency-changers for eliminating image frequencies {(H03D7/16 takes precedence)} - H04B 1/005: {adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges} - H04B 1/406: {with more than one transmission mode, e.g. analog and digital modes} - H04B: TRANSMISSION - H03D: DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER (masers, lasers H01S; circuits capable of acting both as modulator and demodulator H03C; details applicable to both modulators and frequency-changers H03C; demodulating pulses H03K9/00; transforming types of pulse modulation H03K11/00; coding, decoding or code conversion, in general H03M; repeater stations H04B7/14; demodulators adapted for AC systems of digital information transmission H04L27/00; synchronous demodulators adapted for colour television H04N9/66) ## Abstract A RF downconverter-tuner system is provided. A RF downconverter-tuner system to convert one or more input signals into a lower range of frequency bands, comprising one or more RF input ports for receiving the one or more input signals, one or more RF output ports for transmitting the output signal and a plurality of dual-mode switches coupled to two or more of the one or more RF input ports, the one or more RF output ports and one or more receive chain comprising one or more mixers for converting the one or more input signals into the lower range of frequency bands, a plurality of filters, a bypass mode, a back-end receiver coupled to the one or more RF output ports, an oscillator implemented with a frequency synthesis circuit, a plurality of amplifier stages, one or more signal detection circuits and a plurality of controller ports. ## Claims ### Claim 1 A RF downconverter-tuner system to convert one or more input signals into a lower range of frequency bands, comprising: one or more RF input ports for receiving said one or more input signals; one or more RF output ports for transmitting said output signal; a plurality of dual-mode switches coupled to two or more of the group consisting of said one or more RF input ports, said one or more RF output ports and one or more receive chains; said receive chain comprising: one or more mixers for converting said one or more input signals into said lower range of frequency bands; a plurality of filters for eliminating one or more of unwanted signal artifacts, band signals and spurious products; a bypass mode for allowing for one or more of said input signals that are outside of a frequency range of said RF downconverter-tuner system to pass through to said one or more RF output ports, a back-end receiver coupled to said one or more RF output ports such that a selection of said input signals are processed by said back-end receiver; an oscillator implemented with a frequency synthesis circuit; a plurality of amplifier stages for increasing the strength of said input signal and for compensating for losses due to said one or more mixers and said plurality of filters; one or more signal detection circuits for detecting the level of said input signals at various stages in said receive chain; and a plurality of controller ports for controlling said RF downconverter-tuner system. ### Claim 2 (depends on 1) The RF downconverter-tuner system of claim 1, wherein said output signal is a fixed frequency. ### Claim 3 (depends on 1) The RF downconverter-tuner system of claim 1, wherein said output signal is a center frequency. ### Claim 4 (depends on 3) The RF downconverter-tuner system of claim 3, wherein said center frequency is dependent on the input signal frequency. ### Claim 5 (depends on 3) The RF downconverter-tuner system of claim 3, wherein said center frequency is dependent on the frequency of said oscillator. ### Claim 6 (depends on 3) The RF downconverter-tuner system of claim 3, wherein said center frequency is dependent on the input signal frequency and the frequency of said oscillator. ### Claim 7 (depends on 1) The RF downconverter-tuner system of claim 1, wherein said output signal is dependent on other signals generated in the downconverter-tuner system. ### Claim 8 (depends on 1) The RF downconverter-tuner system of claim 1, wherein said output signal is dependent on the input frequency and other signals generated in the downconverter-tuner system. ### Claim 9 (depends on 1) The RF downconverter-tuner system of claim 1, wherein said frequency synthesis circuit is a phase-locked synthesizer. ### Claim 10 (depends on 1) The RF downconverter-tuner system of claim 1, wherein said controller ports are selected from the group consisting of one or more Ethernet ports, one or more USB ports and one or more Serial ports. ### Claim 11 (depends on 1) The RF downconverter-tuner system of claim 1, wherein said one or more RF output ports are an intermediate frequency (IF) output port. ### Claim 12 (depends on 1) The RF downconverter-tuner system of claim 1, wherein said oscillator is fixed. ### Claim 13 (depends on 1) The RF downconverter-tuner system of claim 1, wherein said oscillator is tunable. ### Claim 14 (depends on 1) The RF downconverter-tuner system of claim 1, wherein said oscillator is shared across multiple RF downconverter-tuners for synchronization. ### Claim 15 (depends on 1) The RF downconverter-tuner system of claim 1, wherein said plurality of filters are one or more filter banks. ### Claim 16 (depends on 15) The RF downconverter-tuner system of claim 15, wherein said filter bank comprises of one or more switchable analog pre-select filters. ### Claim 17 (depends on 15) The RF downconverter-tuner system of claim 15, wherein said filter bank includes overlapping frequency ranges within a processing range of said RF downconverter-tuner system. ### Claim 18 (depends on 15) The RF downconverter-tuner system of claim 15, wherein said filter bank includes an unfiltered signal path. ### Claim 19 (depends on 16) The RF downconverter-tuner system of claim 16, wherein said filter bank includes a pass-through. ### Claim 20 (depends on 1) The RF downconverter-tuner system of claim 1, wherein said one or more signal detection circuits are selected from the group consisting of analog detection circuits and digital detection circuits. ### Claim 21 (depends on 1) The RF downconverter-tuner system of claim 1, wherein said input signals have been downconverted. ### Claim 22 (depends on 1) The RF downconverter-tuner system of claim 1, wherein said input signals are outside of said frequency range. ### Claim 23 (depends on 1) The RF downconverter-tuner system of claim 1, wherein said oscillator is implemented with one or more Yttrium iron garnet spheres (YIG).