# US 2018/0323819 A1 · Radio frequency (rf) transceiver and operating method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0323819 A1 - Document ID: US20180323819A1 - Status: Published application - Kind: A1 - Application number: 16/032,381 - Filed: 2018-07-11 - Published: 2018-11-08 - Earliest claimed: 2016-07-18 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Seok Ju YUN - Web page: https://patentgrep.com/patent/US20180323819A1 ## CPC - H04B 1/406: {with more than one transmission mode, e.g. analog and digital modes} - H03B 5/08: with frequency-determining element comprising lumped inductance and capacitance - H03B 5/1234: {and comprising means for varying the output amplitude of the generator (H03B5/1278 takes precedence)} - H03B 5/1237: {comprising means for varying the frequency of the generator} - H03B 5/24: active element in amplifier being semiconductor device (H03B5/26 takes precedence) - H03B 5/32: being a piezoelectric resonator (selection of piezoelectric material H10N30/00) - H03D 1/00: Demodulation of amplitude-modulated oscillations (H03D5/00, H03D9/00, H03D11/00 take precedence) - H03F 1/565: {using inductive elements} - H03F 3/19: with semiconductor devices only - H03F 3/245: {with semiconductor devices only} - H03G 3/3042: {in modulators, frequency-changers, transmitters or power amplifiers} - H03F 2200/222: A circuit being added at the input of an amplifier to adapt the input impedance of the amplifier - H03F 2200/294: the amplifier being a low noise amplifier [LNA] - H03F 2200/387: A circuit being added at the output of an amplifier to adapt the output impedance of the amplifier - H03F 2200/451: the amplifier being a radio frequency amplifier - H04B: TRANSMISSION - H03B: GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS (generators adapted for electrophonic musical instruments G10H; masers or lasers H01S; generation of oscillations in plasma H05H) - 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) - H03F: AMPLIFIERS - H03G: CONTROL OF AMPLIFICATION ## Abstract A radio frequency (RF) transceiver includes a first oscillator configured to generate a first oscillation frequency associated with an RF signal, a second oscillator configured to generate a second oscillation frequency associated with a clock frequency, a counter configured to generate a counter output signal using the first oscillation frequency and the second oscillation frequency, and a comparer configured to generate a digital output signal associated with the RF signal by comparing an output value of the counter output signal to a reference value. ## Claims ### Claim 1 A radio frequency (RF) transceiver comprising: a first oscillator configured to generate a first oscillation frequency associated with an RF signal; a second oscillator configured to generate a second oscillation frequency associated with a clock frequency; a quenching wave generator configured to generate a quenching signal that controls a negative-R generator of the first oscillator using the second oscillation frequency; a counter configured to generate a counter output signal using the first oscillation frequency and the second oscillation frequency; and a comparer configured to generate a digital output signal associated with the RF signal by comparing an output value of the counter output signal to a reference value. ### Claim 2 (depends on 1) The RF transceiver of claim 1, wherein the counter output signal is associated with a ratio of the first oscillation frequency to the second oscillation frequency. ### Claim 3 (depends on 1) The RF transceiver of claim 1, wherein the first oscillator comprises: an antenna configured to receive the RF signal; the negative-R generator being electrically connected to the antenna; and a capacitor bank connected in parallel with the antenna and the negative-R generator. ### Claim 4 (depends on 1) The RF transceiver of claim 1, further comprising: an auto gain calibration controller configured to disable the quenching wave generator and the negative-R generator in response to an input power of the RF signal being greater than or equal to a threshold value. ### Claim 5 (depends on 1) The RF transceiver of claim 1, further comprising: an alternating current (AC) coupling capacitor disposed between the first oscillator and the counter. ### Claim 6 (depends on 1) The RF transceiver of claim 1, further comprising: a data generator configured to generate transmission data; and a modulator configured to modulate the transmission data received from the data generator using the first oscillator. ### Claim 7 (depends on 1) The RF transceiver of claim 1, further comprising: an auto amplitude calibration controller connected to the first oscillator and configured to correct an amplitude of the first oscillator. ### Claim 8 (depends on 1) The RF transceiver of claim 1, further comprising: an auto frequency calibration controller electrically connected to the first oscillator and configured to correct a frequency of the first oscillator. ### Claim 9 (depends on 1) The RF transceiver of claim 1, wherein the first oscillator and the second oscillator are disposed in a single RF transceiver integrated circuit (IC). ### Claim 10 A radio frequency (RF) transceiver comprising: a first oscillator configured to generate a first oscillation frequency associated with an RF signal; a second oscillator configured to generate a second oscillation frequency associated with a clock frequency; a quenching wave generator configured to generate a quenching signal that controls a negative-R generator of the first oscillator using the second oscillation frequency; an envelope detector configured to detect an envelope signal from the first oscillation frequency; a counter configured to generate a counter output signal using the first oscillation frequency, the second oscillation frequency, and the envelope signal; and a comparer configured to generate a digital output signal associated with the RF signal by comparing the counter output signal to a reference value. ### Claim 11 (depends on 10) The RF transceiver of claim 10, wherein the counter output signal is associated with a ratio of the first oscillation frequency to the second oscillation frequency. ### Claim 12 (depends on 10) The RF transceiver of claim 10, wherein the envelope signal is applied to an enable signal of the counter. ### Claim 13 (depends on 10) The RF transceiver of claim 10, wherein the first oscillator comprises: an antenna configured to receive the RF signal; the negative-R generator being electrically connected to the antenna; and a capacitor bank connected in parallel with the antenna and the negative-R generator. ### Claim 14 (depends on 10) The RF transceiver of claim 10, further comprising: an auto gain calibration controller configured to disable the quenching wave generator and the negative-R generator in response to an input power of the RF signal being greater than or equal to a threshold value. ### Claim 15 (depends on 10) The RF transceiver of claim 10, further comprising: an alternating current (AC) coupling capacitor disposed between the first oscillator and the counter. ### Claim 16 A radio frequency (RF) transceiver comprising: a first oscillator configured to generate a first oscillation frequency associated with an RF signal; a second oscillator configured to generate a second oscillation frequency associated with a clock frequency; a quenching wave generator configured to generate a quenching signal that controls the first oscillator using the second oscillation frequency; and an auto gain calibration controller configured to enable or disable the quenching wave generator based on an input power of the RF signal. ### Claim 17 (depends on 16) The RF transceiver of claim 16, wherein the auto gain calibration controller is further configured to enable the quenching wave generator in response to a receiving sensitivity level being relatively high. ### Claim 18 (depends on 16) The RF transceiver of claim 16, further comprising: a counter configured to generate a counter output signal using the first oscillation frequency and the second oscillation frequency; and a comparer configured to generate a digital output signal associated with the RF signal by comparing an output value of the counter output signal to a reference value.