# US 10,484,037 B2 · 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 10,484,037 B2 - Document ID: US10484037B2 - Status: Granted - Kind: B2 - Application number: 16/032,381 - Filed: 2018-07-11 - Published: 2018-11-08 - Granted: 2019-11-19 - 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/US10484037B2 ## 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 to control a negative-R generator of the first oscillator using the second oscillation frequency; and a comparer configured to generate a digital output signal associated with the RF signal based on consideration of the first oscillation frequency, the second oscillation frequency, and a reference. ### Claim 2 (depends on 1) The RF transceiver of claim 1, further comprising: a counter configured to generate a counter output signal based on a result of comparing the first oscillation frequency and the second oscillation frequency, 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; and a modulator configured to modulate transmission data. ### Claim 11 (depends on 10) The RF transceiver of claim 10, further comprising: 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, 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 selectively enable or disable the quenching wave generator based on an input power of the RF signal, wherein the auto gain calibration controller is further configured to disable the quenching wave generator in response to the input power of the RF signal being determined to be greater than or equal to a threshold value. ### 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 the input power of the RF signal being determined to be less than the threshold value. ### 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. ### Claim 19 A radio frequency (RF) transceiver comprising: a first oscillator configured to generate a first signal of a first oscillation frequency associated with an RF signal, by using an antenna for receiving the RF signal as an inductor of the first oscillator; a second oscillator configured to generate a second signal of a second oscillation frequency associated with an internal clock frequency; a counter configured to generate a counter output signal using the first signal and the second signal, wherein the first signal is used as a clock of the counter and the second signal resets the counter; and a comparer configured to generate a digital output signal associated with the RF signal by comparing the counter output signal to a reference signal. ### Claim 20 (depends on 19) The RF transceiver of claim 19, wherein a first timing at which the first signal is generated when the RF signal corresponds to 1 is faster than a second timing at which the first signal is generated when the RF signal corresponds to 0. ### Claim 21 (depends on 19) The RF transceiver of claim 19, wherein the antenna is directly connected to the first oscillator. ### Claim 22 (depends on 19) The RF transceiver of claim 19, further comprising: a modulator configured to modulate a transmitting signal using the first oscillator. ### Claim 23 (depends on 22) The RF transceiver of claim 22, wherein the modulator comprising at least one of an OOK modulator and a FSK modulator. ### Claim 24 (depends on 22) The RF transceiver of claim 22, wherein the modulator adjusts the first oscillation frequency using Ccode[n:0].