# US 2014/0197894 A1 · Narrow band receiver or transceiver > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0197894 A1 - Document ID: US20140197894A1 - Status: Published application - Kind: A1 - Application number: 13/739,366 - Filed: 2013-01-11 - Published: 2014-07-17 - Earliest claimed: 2013-01-11 - Assignees: EM Microelectronic-Marin SA - Applicants: Em Microelectronic-Marin SA - Inventors: Armin TAJALLI; Marc MORIN - Web page: https://patentgrep.com/patent/US20140197894A1 ## CPC - H03L 7/08: Details of the phase-locked loop - H03G 3/3052: {in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver (H03G3/32, H03G3/34 take precedence)} - H03G 3/3068: {Circuits generating control signals for both R.F. and I.F. stages} - H03J 1/005: {in a loop} - H03G 3/3036: {in high-frequency amplifiers or in frequency-changers (H03G3/3052, H03G3/32, H03G3/34 take precedence)} - H03G 3/3042: {in modulators, frequency-changers, transmitters or power amplifiers} - H03L: AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES (generation of oscillations H03B) - H03G: CONTROL OF AMPLIFICATION - H03J: TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS ## Abstract The present invention relates to a narrow band receiver or transceiver for processing electrical signals. The narrow band receiver or transceiver comprises an amplifier, a voltage controlled oscillator and a tuning assembly comprising at least one control loop for tuning of the voltage controlled oscillator. At least a gain control of the amplifier is coupled to the control loop for simultaneously tuning the output amplitude of the voltage controlled oscillator and the gain of the amplifier. A compensation of the effect of variation on the gain of the amplifier, which includes an LC tank circuit, is performed by using an information in another LC tank circuit of the voltage controlled oscillator in the control loop. ## Claims ### Claim 1 A narrow band receiver or transceiver for processing of electrical signals, comprising: at least one amplifier for amplifying received signals or signals to be transmitted, a voltage controlled oscillator, and a tuning assembly or module comprising at least one control loop for tuning the voltage controlled oscillator, wherein at least a gain control of the amplifier is coupled to the at least one control loop for simultaneously tuning the output amplitude of the voltage controlled oscillator and the gain of the amplifier with a compensation of the effect of variation on the gain of the amplifier by using an information from tuning of the output amplitude of the voltage controlled oscillator in the control loop. ### Claim 2 (depends on 1) The narrow band receiver or transceiver according to claim 1, wherein the tuning assembly comprises an amplitude locked loop including the voltage controlled oscillator and wherein said amplitude locked loop is coupled with the amplifier for tuning of the amplifier's gain. ### Claim 3 (depends on 2) The narrow band receiver or transceiver according to claim 2, wherein a compensation of the effect of variation on the gain of the amplifier, which includes an LC tank circuit, is performed by using an information in another LC tank circuit of the voltage controlled oscillator in the control loop. ### Claim 4 (depends on 1) The narrow band receiver or transceiver according to claim 1, wherein the tuning assembly comprises a frequency locked loop including the voltage controlled oscillator and wherein said frequency locked loop is coupled with the amplifier for tuning of the amplifier's center frequency. ### Claim 5 (depends on 1) The narrow band receiver or transceiver according to claim 1, wherein the tuning assembly comprises a phase locked loop including the voltage controlled oscillator, and wherein said phase locked loop is coupled with the amplifier for tuning of the amplifier's center frequency. ### Claim 6 (depends on 4) The narrow band receiver or transceiver according to claim 4, further comprising an impedance matching circuit coupled with the frequency locked loop. ### Claim 7 (depends on 6) The narrow band receiver or transceiver according to claim 6, wherein the impedance matching circuit is coupled with a phase locked loop including the voltage controlled oscillator. ### Claim 8 (depends on 1) The narrow band receiver or transceiver according to claim 1, wherein the amplifier comprises a low-noise amplifier comprising an LC tank circuit for tuning of the amplifier's center frequency. ### Claim 9 (depends on 8) The narrow band receiver or transceiver according to claim 8, wherein the voltage controlled oscillator comprises an LC tank circuit for tuning of the oscillator's center frequency. ### Claim 10 (depends on 9) The narrow band receiver or transceiver according to claim 9, wherein electronic components of the amplifier's LC tank circuit and electronic components of the oscillator's LC tank circuit comprise a substantially identical design or structure. ### Claim 11 (depends on 10) The narrow band receiver or transceiver according to claim 10, wherein the amplifier's and the oscillator's LC tank circuits are simultaneously tunable by means of the frequency locked loop and/or by means of the phase locked loop of the tuning assembly. ### Claim 12 (depends on 1) The narrow band receiver or transceiver according to claim 1, wherein the amplifier and the voltage controlled oscillator are components of a common integrated circuit. ### Claim 13 (depends on 1) The narrow band receiver or transceiver according to claim 1, wherein the amplifier comprises a bias generator for tuning of the amplifier's gain. ### Claim 14 (depends on 1) The narrow band receiver or transceiver according to claim 1, wherein the voltage controlled oscillator comprises a bias generator for tuning of the oscillator's output amplitude. ### Claim 15 (depends on 2) The narrow band receiver or transceiver according to claim 2, wherein amplifier's and the oscillator's bias current generators are simultaneously tunable by means of the amplitude locked loop of the tuning assembly. ### Claim 16 (depends on 1) A method of an amplifier of a narrow band receiver or transceiver according to claim 1, comprising the steps of: tuning of an output amplitude of a voltage-controlled oscillator by means of at least one control loop of a tuning assembly, coupling of the control loop to a gain control of the amplifier to simultaneously tune the voltage gain of the amplifier and the oscillator's output amplitude with a compensation of the effect of variation on the gain of the amplifier by using an information from tuning of the output amplitude of the voltage controlled oscillator in the control loop.