Patent classifications
H03D11/04
Method for enhancing the starting of an oscillator of a super-regenerative receiver, and receiver for implementing the method
A method is provided for enhancing the detection of the start time of a reference oscillator (4) of a super-regenerative receiver (1), which includes the reference oscillator, a bias current generator (7), an oscillation detector (6), and an impedance matching unit (3). Following the supply of the bias current (i_vco) after receiving the activation control signal (Sosc), an oscillation detection is performed by the oscillation detector (6), and once oscillation is detected, an additional amplification current (iboost) dependent on the envelope of the detected oscillation, of an amplification current generation circuit is supplied to the reference oscillator (4) in addition to the bias current to amplify the oscillation signal to be above a critical oscillation start threshold so as to precisely define the start time of the oscillator, and enable the oscillation detector (6) to order the stoppage of oscillation of the reference oscillator (4).
METHOD FOR DETECTING AN RF SIGNAL IN A SUPER-REGENERATIVE RECEIVER, AND RECEIVER FOR IMPLEMENTING THE METHOD
A method for detecting an RF signal detected by a super-regenerative receiver (1). The receiver includes a reference oscillator (4) for generating an oscillation in the oscillator, a bias current generator (7) for supplying a bias current, an oscillation detector (6) connected between an output (coilp) of the oscillator and the bias current generator for controlling when an RF signal is received by the receiver, and an impedance matching unit (3) disposed between the input of the receiver and the reference oscillator (4). Following activation of a start control signal, detection of the oscillation of the reference oscillator is performed, and once the reference oscillator oscillates above a critical increasing bias current value, the oscillation detector orders the bias current generator to cut off the bias current and thus stop the oscillation of the reference oscillator to reduce the overall electricity consumption during an RF signal detection phase.
METHOD FOR ENHANCING THE STARTING OF AN OSCILLATOR OF A SUPER-REGENERATIVE RECEIVER, AND RECEIVER FOR IMPLEMENTING THE METHOD
A method is provided for enhancing the detection of the start time of a reference oscillator (4) of a super-regenerative receiver (1), which includes the reference oscillator, a bias current generator (7), an oscillation detector (6), and an impedance matching unit (3). Following the supply of the bias current (i_vco) after receiving the activation control signal (Sosc), an oscillation detection is performed by the oscillation detector (6), and once oscillation is detected, an additional amplification current (iboost) dependent on the envelope of the detected oscillation, of an amplification current generation circuit is supplied to the reference oscillator (4) in addition to the bias current to amplify the oscillation signal to be above a critical oscillation start threshold so as to precisely define the start time of the oscillator, and enable the oscillation detector (6) to order the stoppage of oscillation of the reference oscillator (4).
SUPER-REGENERATIVE RECEIVER AND CORRECTION METHOD THEREOF
A correction method (500) for a super-regenerative receiver (100) being configured to resonate at at least one oscillator resonant frequency reference value (111) and comprising at least one control stage (130), at least one varactor (140), at least one reference system (150) and, at least one oscillator (110). The method includes at least one setup (510) of at least one reference signal value (158) by the at least one reference system (150), at least one comparison (560) of at least one oscillator frequency actual value (112) of the at least one oscillator (110) with the at least one reference signal value (158) by the at least one reference system (150) and at least one adjustment (570) of at least one gain of the at least one control stage (130).
Super-regenerative transceiver with improved frequency discrimination
The present disclosure provides a super-regenerative transceiver with a feedback element having a controllable gain. The super-regenerative transceiver utilizes the controllable gain to improve RF signal data sensitivity and improve RF signal data capture rates. Super-regenerative transceivers described herein permit signal data capture over a broad range of frequencies and for a range of communication protocols. Super-regenerative transceivers described herein are tunable, consume very little power for operation and maintenance, and permit long term operation even when powered by very small power sources (e.g., coin batteries).
Super-regenerative transceiver with improved frequency discrimination
The present disclosure provides a super-regenerative transceiver with a feedback element having a controllable gain. The super-regenerative transceiver utilizes the controllable gain to improve RF signal data sensitivity and improve RF signal data capture rates. Super-regenerative transceivers described herein permit signal data capture over a broad range of frequencies and for a range of communication protocols. Super-regenerative transceivers described herein are tunable, consume very little power for operation and maintenance, and permit long term operation even when powered by very small power sources (e.g., coin batteries).
Frequency-converting super-regenerative transceiver
The present disclosure provides a frequency-converting super-regenerative transceiver with a frequency mixer coupled to a resonator and a feedback element having a controllable gain. The frequency-converting super-regenerative transceiver utilizes the frequency mixer to shift the incoming frequencies, based on a controlled oscillator, to match the frequency of operation of the super-regenerative transceiver. The frequency-converting super-regenerative transceivers described herein permit signal data capture over a broad range of frequencies and for a range of communication protocols. The frequency-converting super-regenerative transceivers described herein are tunable, consume very little power for operation and maintenance, and permit long term operation even when powered by very small power sources (e.g., coin batteries).
Frequency-converting super-regenerative transceiver
The present disclosure provides a frequency-converting super-regenerative transceiver with a frequency mixer coupled to a resonator and a feedback element having a controllable gain. The frequency-converting super-regenerative transceiver utilizes the frequency mixer to shift the incoming frequencies, based on a controlled oscillator, to match the frequency of operation of the super-regenerative transceiver. The frequency-converting super-regenerative transceivers described herein permit signal data capture over a broad range of frequencies and for a range of communication protocols. The frequency-converting super-regenerative transceivers described herein are tunable, consume very little power for operation and maintenance, and permit long term operation even when powered by very small power sources (e.g., coin batteries).
Frequency selective logarithmic amplifier with intrinsic frequency demodulation capability
A regenerative selective logarithmic detector amplifier (LDA) can have integrated FM demodulation capabilities. It can receive a wired or wireless FM modulated signal and amplify or demodulate it with high sensitivity, high skirt ratio and minimized noise when compared to the prior art. When used in conjunction with other circuits such as a PLL or mixer, it can improve interference rejection and frequency selectivity and be locked on a precise channel in frequency and phase. The LDA produces intermittent oscillations that are self-quenched when reaching a given threshold. It also embeds the circuitry to perform direct FM discrimination. FM demodulation process is completed by a simple analog or digital frequency to voltage converter. This plus the fact that the instantaneous regeneration gain is low-medium permit to detect signals of small amplitudes buried in the noise.
Frequency selective logarithmic amplifier with intrinsic frequency demodulation capability
A regenerative selective logarithmic detector amplifier (LDA) can have integrated FM demodulation capabilities. It can receive a wired or wireless FM modulated signal and amplify or demodulate it with high sensitivity, high skirt ratio and minimized noise when compared to the prior art. When used in conjunction with other circuits such as a PLL or mixer, it can improve interference rejection and frequency selectivity and be locked on a precise channel in frequency and phase. The LDA produces intermittent oscillations that are self-quenched when reaching a given threshold. It also embeds the circuitry to perform direct FM discrimination. FM demodulation process is completed by a simple analog or digital frequency to voltage converter. This plus the fact that the instantaneous regeneration gain is low-medium permit to detect signals of small amplitudes buried in the noise.