Rejection lc-filter |
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IPC classes for russian patent Rejection lc-filter (RU 2520422):
 Tunable band-pass lc-filter / 2516756
Tunable band-pass LC-filter comprises a band-pass circuit which consists of a first inductance coil, the first terminal of which is connected to a first capacitor, the second terminal of which is connected to a second capacitor, the second terminal of which is connected to a second inductance coil, the second terminal of which is connected to a common bus, and a third, fourth, fifth, sixth, seventh and eight capacitor.
 Frequency-selective device for processing surface acoustic wave signals / 2507677
Frequency-selective device for processing surface acoustic wave signals includes a layered acoustic line made of a phononic crystal in form of an elongated plate, on one wide face of which there is a layer of solid substance with acoustic impedance, different from the material of the acoustic line, and at least two electroacoustic transducers connected to the acoustic line; the phononic crystal plate is formed by an array of separate extended elements arranged in a matrix, wherein the longitudinal axis of said elements matches the width of the plate; the layer of solid substance completely covers the surface of the plate, wherein the input electroacoustic transducer is capable of exciting Love surface acoustic waves in the layer of the solid substance and is placed on the wide face at one end of the plate; the layer of solid substance in the direction of the length of the plate has an area with a variable thickness; receiving electroacoustic transducers are placed at the other wide face of the plate.
 Controlled acoustoelectronic device / 2505920
Method is carried out using an acoustoelectronic device which employs an acoustic line which consists of a monocrystal of a lanthanum-strontium manganite composition La1-xSrxMnO3 (0.12≤x≤0.18) with thermally controlled speed of volume or surface acoustic waves near structural phase transition. The device has an acoustic line having at its ends wideband volume or surface acoustic wave converters, and a thermoelectric temperature controller.
 Method, system and device for wireless transmission of energy (versions) / 2505919
Disclosed are three versions of a device for wireless transmission of energy, one of which includes: at least one solid-state magnetostrictive resonator in form of a rod; at least one rod made of soft magnetic material placed in the immediate vicinity of said resonator at a distance not greater than its length; at least one converting coil wound around or placed near said resonator or rod made of soft magnetic material at a distance not greater than the length of the resonator or rod, as well as two versions of a method of matching devices for wireless transmission of energy and three versions of a system which is based on using the disclosed methods and includes the disclosed devices.
 Highly selective tunable lc bandpass filter / 2504897
Highly selective tunable LC bandpass filter has in the longitudinal branch a first capacitor connected to a first inductance coil, second and third inductance coils, a second capacitor and a third inductance coil, fourth, fifth, sixth, seventh and eighth inductance coils, first, second and third signal lines, first and second groups of capacitors; the first signal line is connected to the first group of capacitors; the second lead of each of said capacitors is connected through a corresponding electronic switch to a second signal line; the first leads of the second group of capacitors are connected to a common bus; the second lead of each of said capacitors is connected through a corresponding electronic switch to a third signal line.
 Multiband tunable lc bandpass filter / 2496226
Multiband tunable LC bandpass filter has two structure-identical bandpass circuits, each consisting of two inductance coils and three capacitors; the input and output of each of the circuits are connected through electronic switches on both inductance coils to an amplifier, eight signal lines, between which, through corresponding electronic switches, are connected corresponding multiple sections of three inductance coils or three capacitors.
 Tunable rejection lc filter / 2495523
Device includes a low-pass filter consisting of N structurally identical links, each link consisting of an inductance coil, the first lead of which is the input of the link, the second lead is the output of the link; each of the leads of the inductance coil is connected to a capacitor; the second leads of the capacitors are connected to a common bus, wherein two loops are further included, each consisting of parallel-connected capacitor and inductance coil; also additionally included are first, second, third and fourth signal lines; the second signal line is connected to a first group of M electronic switches; the second lead of each electronic switch is connected to a capacitor; the second leads of the capacitors are connected to the first signal line, and the third signal line is connected to a second group of M electronic switches; the second lead of each of the electronic switches is connected to a capacitor; the second leads of the capacitors are connected to the fourth signal line.
 Method to dedicate useful signal from noise - "method of mirror noise images" and device for its realisation / 2480897
Method to dedicate a useful signal from noise consists in filtration of an input signal in the frequency area, corresponding to the spectrum of the useful signal, in dedication of at least one additional signal from the input signal through filtration, at least in one of frequency areas lying outside the border of the useful signal spectrum, and with the help of the additional signal a signal of noise compensation is generated. The device for dedication of a useful signal from noise comprises a source of an input signal connected to an input of the main filter designed for dedication of a signal in the area of frequencies, which correspond to the spectrum of the useful signal, a unit of additional filters, designed to dedicate additional signals in the areas of frequencies that lie outside the spectrum of the useful signal, a unit of signal processing.
 Ultrasound phase interrupter vibrator / 2472109
Proposed device comprises master oscillator and radiating transducer interacting with analysed object, receiving transducer, phase shifter and phase detector with its second input connected to radiating transducer input, and data processing unit. Device incorporates also element OR with its first input connected to shaft turn angle pickup, its second input connected to phase detector output, and its output connected to data processing unit input. Code disc is arranged on analysed object shaft connected to shaft turn angle pickup with its output connected to first input of element AND and first input of element AND-NO while its output is connected to frequency detector input with its output connected to data processing unit second input.
 Vibrator, vibration transducer, vibration generator and electronic device / 2470457
Provided is a vibrator, having a small size, low frequency and high Q value. The vibrator includes a base area in which there are a pair of cuts and a pair of vibrating arms which continue in parallel from one end face of a first area of the base area. Each vibrating arm includes a common area which is the main vibrating area, and weighted area which is formed on the upper end face of the vibrating arm on the opposite side of the base of the vibrating arm attached to the base area and which has a larger width than the common area. The vibrating arm reaches the bottom of an elongated groove which has a hole at least along one main surface from both main surfaces of each vibrating arm, and a weighted area which is formed on the upper end face of the vibrating arm on the opposite side of the base of the vibrating arm attached to the base area and which has a larger width than that of the vibrating arm on the side of the base attached to the base area. The weighted area is formed such that the ratio of the length of the weighted area to the length from the base which is attached to the base area to the upper end face in the longitudinal direction of the vibrating arm ranges from 35% to 41%.
 Electromechanical filter ocsillatory system with holder / 2442276
FIELD: radio technology; electrical filters with mechanical resonators. SUBSTANCE: electromechanical filter oscillatory system with a holder comprises: input and output terminals, input and output translators, cylindrical resonators, cylindrical bushings, clamping devices, holder. The clamping devices is made in the form of cylindrical metal bushings positioned in junction points of extreme resonators, whereas the axes of these bushings are parallel among themselves and perpendicular to the axis of the oscillatory system resonators. The holder is made in the form of a spring clamp which clenches the oscillatory system via the bushings. EFFECT: increase of the vibration survival strength for the oscillatory system and of the quality factor for the resonators and clamping devices. 1 dwg  Highly selective band-pass tuneable lc filter / 2453985
Invention relates to radio electronics. The highly selective band-pass tuneable LC filter has: two structurally identical band-pass circuits, each having a first, second, third, fourth, fifth, sixth, seventh and eighth inductance coil, a first, second and third capacitor, a common bus, an amplifier, an input potential terminal for the device, an output potential terminal for the device, four signal buses, the filter also has N structurally identical sections of a first group, each having a first electronic switch, M structurally identical sections of a second group, each having a third electronic switch.
Vibrator, vibration transducer, vibration generator and electronic device / 2470457
Provided is a vibrator, having a small size, low frequency and high Q value. The vibrator includes a base area in which there are a pair of cuts and a pair of vibrating arms which continue in parallel from one end face of a first area of the base area. Each vibrating arm includes a common area which is the main vibrating area, and weighted area which is formed on the upper end face of the vibrating arm on the opposite side of the base of the vibrating arm attached to the base area and which has a larger width than the common area. The vibrating arm reaches the bottom of an elongated groove which has a hole at least along one main surface from both main surfaces of each vibrating arm, and a weighted area which is formed on the upper end face of the vibrating arm on the opposite side of the base of the vibrating arm attached to the base area and which has a larger width than that of the vibrating arm on the side of the base attached to the base area. The weighted area is formed such that the ratio of the length of the weighted area to the length from the base which is attached to the base area to the upper end face in the longitudinal direction of the vibrating arm ranges from 35% to 41%.
Ultrasound phase interrupter vibrator / 2472109
Proposed device comprises master oscillator and radiating transducer interacting with analysed object, receiving transducer, phase shifter and phase detector with its second input connected to radiating transducer input, and data processing unit. Device incorporates also element OR with its first input connected to shaft turn angle pickup, its second input connected to phase detector output, and its output connected to data processing unit input. Code disc is arranged on analysed object shaft connected to shaft turn angle pickup with its output connected to first input of element AND and first input of element AND-NO while its output is connected to frequency detector input with its output connected to data processing unit second input.
Method to dedicate useful signal from noise - "method of mirror noise images" and device for its realisation / 2480897
Method to dedicate a useful signal from noise consists in filtration of an input signal in the frequency area, corresponding to the spectrum of the useful signal, in dedication of at least one additional signal from the input signal through filtration, at least in one of frequency areas lying outside the border of the useful signal spectrum, and with the help of the additional signal a signal of noise compensation is generated. The device for dedication of a useful signal from noise comprises a source of an input signal connected to an input of the main filter designed for dedication of a signal in the area of frequencies, which correspond to the spectrum of the useful signal, a unit of additional filters, designed to dedicate additional signals in the areas of frequencies that lie outside the spectrum of the useful signal, a unit of signal processing.
Tunable rejection lc filter / 2495523
Device includes a low-pass filter consisting of N structurally identical links, each link consisting of an inductance coil, the first lead of which is the input of the link, the second lead is the output of the link; each of the leads of the inductance coil is connected to a capacitor; the second leads of the capacitors are connected to a common bus, wherein two loops are further included, each consisting of parallel-connected capacitor and inductance coil; also additionally included are first, second, third and fourth signal lines; the second signal line is connected to a first group of M electronic switches; the second lead of each electronic switch is connected to a capacitor; the second leads of the capacitors are connected to the first signal line, and the third signal line is connected to a second group of M electronic switches; the second lead of each of the electronic switches is connected to a capacitor; the second leads of the capacitors are connected to the fourth signal line.
Multiband tunable lc bandpass filter / 2496226
Multiband tunable LC bandpass filter has two structure-identical bandpass circuits, each consisting of two inductance coils and three capacitors; the input and output of each of the circuits are connected through electronic switches on both inductance coils to an amplifier, eight signal lines, between which, through corresponding electronic switches, are connected corresponding multiple sections of three inductance coils or three capacitors.
Highly selective tunable lc bandpass filter / 2504897
Highly selective tunable LC bandpass filter has in the longitudinal branch a first capacitor connected to a first inductance coil, second and third inductance coils, a second capacitor and a third inductance coil, fourth, fifth, sixth, seventh and eighth inductance coils, first, second and third signal lines, first and second groups of capacitors; the first signal line is connected to the first group of capacitors; the second lead of each of said capacitors is connected through a corresponding electronic switch to a second signal line; the first leads of the second group of capacitors are connected to a common bus; the second lead of each of said capacitors is connected through a corresponding electronic switch to a third signal line.
Method, system and device for wireless transmission of energy (versions) / 2505919
Disclosed are three versions of a device for wireless transmission of energy, one of which includes: at least one solid-state magnetostrictive resonator in form of a rod; at least one rod made of soft magnetic material placed in the immediate vicinity of said resonator at a distance not greater than its length; at least one converting coil wound around or placed near said resonator or rod made of soft magnetic material at a distance not greater than the length of the resonator or rod, as well as two versions of a method of matching devices for wireless transmission of energy and three versions of a system which is based on using the disclosed methods and includes the disclosed devices.
Controlled acoustoelectronic device / 2505920
Method is carried out using an acoustoelectronic device which employs an acoustic line which consists of a monocrystal of a lanthanum-strontium manganite composition La1-xSrxMnO3 (0.12≤x≤0.18) with thermally controlled speed of volume or surface acoustic waves near structural phase transition. The device has an acoustic line having at its ends wideband volume or surface acoustic wave converters, and a thermoelectric temperature controller.
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FIELD: radio engineering, communication. SUBSTANCE: rejection LC-filter comprises a low-pass filter which consists of N inductance coils connected in series to each other, wherein each of the leads of said inductance coils is connected to a capacitor and second leads of the capacitors are connected to a common bus. The first lead of the first inductance coil of the low-pass filter is connected to a first circuit consisting of parallel-connected inductance coil and capacitor; the second lead of the last inductance coil of the low-pass filter is connected to a second circuit consisting of parallel-connected inductance coil and capacitor; the second lead of the second circuit is connected to the output potential terminal of the filter. EFFECT: improved frequency response unevenness and high transmission coefficient in the operating frequency band while providing the required rejection of one of given frequencies. 2 dwg
The invention relates to electronics and can be used as an input device professional radio. The input device receiving the communication equipment is often performed in the form of a bandpass LC filters, which can be made in the form of a cascade connection of filters of the upper and lower frequencies. In some cases, you need to connect an additional notch filters, providing suppression of certain frequencies (usually frequencies, closely spaced transmitters). The introduction of a notch filter, which is a rather complicated structure, leads to an increase in non-uniformity of the amplitude-frequency characteristics (AFC) in the operating frequency band and the reduction gear ratio. The objective of the invention is to improve the non-uniformity of the frequency response and increase the gain of the input circuit of the radio and the increase of the transmission coefficient in the operating frequency band, while ensuring the necessary rejectee one of the preset frequencies. The prototype will choose ZC-lowpass filter containing multiple series-connected inductances, conclusions through which the capacitors are connected to the shared bus. The problem is solved in that in the lowpass filter, which consists of N inductors, with whom United with each other in series, to each of the findings of these coils is connected to the capacitor, the second terminals of the capacitors connected to a common bus, inputs of the first and second circuits, while the first output of the first inductor low pass filter connected to the first circuit consisting of a parallel connected inductor and capacitor, the second terminal of the first circuit is connected to the input potential of the terminal device, to the second output of the last inductor low pass filter connected to the second circuit consisting of a parallel connected inductor and capacitor, the second terminal of the second circuit is connected with the output potential terminal of the filter. Comparative analysis shows that the claimed device differs in that it introduced additional first and second circuits, while the first output of the first inductor low pass filter connected to the first circuit consisting of a parallel connected inductor and capacitor, the second terminal of the first circuit is connected to the input potential of the terminal device, to the second output of the last inductor low pass filter connected to the second circuit consisting of a parallel connected inductor and capacitor, the second terminal of the second circuit connected to the n output potential terminal of the filter. When comparing the claimed device is not only the prototype, but also with other known technical solutions in science and technology, not found solutions with similar characteristics. Figure 1 shows the electric diagram of the device. The device contains a low pass filter (LPF) 1, which consists ofNinductors 2, connected in series to each of the terminals of the inductors is connected to the capacitor 3, the second terminals of the capacitors connected to a common bus, to the first output of the first inductor connected to the first circuit 4 consisting of a parallel connected inductor 5 and capacitor 6, the second output circuit 4 is connected to the input potential of the terminal device, to the second output of the last coil inductance low-pass filter connected to the second path 7, containing the inductor 8 and capacitor 9, the second terminal of the second circuit 7 is connected with the output potential terminal device. The device operates as follows. Low-pass filter 1 has a cutoff frequency above the upper frequency operating range, providing the necessary coordination with load equivalents. Included at the input of the parallel circuit tuned to the frequency of rejectee, and its resistance at this frequency increases, working on the attenuation of the filter is increased. The second con is ur 7 works in a similar way its resonant frequency is chosen close to the frequency of the primary circuit. Coils 6 and 8, you can choose small denomination that allows you to save the frequency response and gain LPF virtually unchanged. The Squareness ratio notch filter will be the better, the higher the quality factor of the first and second paths. Experimental testing has shown that when dobratsch coils, members of the low-pass filter 50, and rejector circuits 500÷700 units it is possible to provide a strip of rejectio 1÷1,5%, the attenuation in the band of rejectio more than 30 dB. Figure 2 shows the experimental frequency response notch filter, confirming the effectiveness of the solutions with simplicity in implementation and configuration. Notch LC filter containing the lowpass filter, which consists of Ninductors, connected in series, to each of the findings of these coils is connected to the capacitor, the second terminals of the capacitors connected to a common bus that is differentthe fact that the first output of the first inductor low pass filter connected to the first circuit consisting of a parallel connected inductor and capacitor, the second terminal of the first circuit is connected to the input potential of the terminal device, to the second conclusion is the last inductor low pass filter connected to the second circuit, consisting of a parallel connected inductor and capacitor, the second terminal of the second circuit is connected with the output potential terminal of the filter.
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