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IPC classes for russian patent Bidirectional microwave amplifier (RU 2504895):
Another patents in same IPC classes:
 Differential amplifier with zero level of output static voltages / 2488954
Differential amplifier with a zero level of output static voltages has a first (1) and a second (2) input transistor, a first (5) and a second (6) output bipolar transistor, a first (7) reference current source, a first (8-9) group of antiphase current outputs (8) and (9) of the device, a second group (10, 11) of antiphase current outputs (10) and (11) of the device.
 Selective amplifier / 2488953
Selective amplifier has a first (1) and a second (2) input transistor, the output (5) of the device, a first (8) balancing capacitor, a second (9) balancing capacitor, a first (12) and a second (13) additional frequency-setting resistor and a third (14) balancing capacitor.
 Selective amplifier / 2488952
Selective amplifier has a first input transistor, the base of which is connected to a signal source and the emitter is connected to a first power supply bus, a second input transistor, the emitter of which is connected to the first power supply bus and the collector is connected to a second power supply bus, a first balancing capacitor connected between the emitters of the first and second input transistors. The first balancing capacitor is connected in series to a first frequency-setting resistor; between the base of the second input transistor and the first power supply bus there is a second frequency-setting resistor, a second balancing capacitor, connected through alternating current in parallel to a second frequency-setting resistor, an additional transistor, the collector of which is connected to the output of the device and the base of the second input transistor, the base is connected to an additional voltage source, and the emitter is connected to the second power supply bus. The collector of the first input transistor is connected to the input of an additional current mirror, the collector output of which is connected to the first power supply bus, and the common emitter output is connected to the emitter of the additional transistor.
 Selective amplifier with paraphase output / 2487466
Selective amplifier with a paraphase output has a first (1) input transistor, the base of which is the input (2) of the device, a first (3) current-stabilising two-terminal device, a first power supply bus (4), a first (5) output transistor, a second (6) current-stabilising two-terminal device, a second (7) power supply bus, a second (8) input transistor, a second (9) output transistor, a third (10) current-stabilising two-terminal device, a secondary voltage source (11), a fourth (12) current-stabilising two-terminal device, a first (13) output of the device, a fifth (14) current-stabilising two-terminal device, a second (15) output of the device, a first (16) and a second (17) balancing capacitor, a sixth (18) current-stabilising two-terminal device, additional balancing capacitors (19) and a resistor (20), a first (21) and a second (22) additional transistor, a seventh (23) current-stabilising two-terminal device.
 Microwave power amplifier / 2487465
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 Method for linearisation of microwave amplifier characteristics (versions) / 2487464
Method for linearisation of characteristics of a microwave amplifier using a signal at envelope curve signals to suppress nonlinear distortions consists in that, in a microwave amplifier based on a travelling-wave tube or a klystron, a low-frequency correction signal of the envelope curve from the output of a modulator or the output of a detector is fed to the focusing electrode or the first anode of the travelling-wave tube or a klystron, and in a transistor microwave amplifier, a low-frequency correction signal of the envelope curve from the output of a modulator or the output of a detector is fed to the input of the transistor through circuits which determine the operating point. Amplifier characteristics consistently vary under the action of the signal, which is the envelope curve of the modulated microwave signal at the input of the amplifier.
 Selective amplifier / 2485674
Selective amplifier comprises an input (1), the first (2) correcting capacitor, the first (3) input transistor, the first (4) current-stabilising dipole, the first (5) bus of a power supply source, the second (6) input transistor, a source of auxiliary voltage (7), the first (8) resistor, the second (9) bus of a power supply source, the second (10), third (11) and fourth (12) resistors, the second (13) correcting capacitor, an output transistor (14), the second (15) current-stabilising dipole, an output of the device (17), an additional correcting capacitor (18), the third (19) current-stabilising dipole.
 Selective amplifier / 2485673
Selective amplifier comprises a current input (1), connected with the input of the first (2) current mirror, matched with the first (3) bus of a power supply source, the second (4) current mirror matched with the second (5) bus of a power supply source, the input of which is connected to the output of the first (2) current mirror. Besides, between the output of the second (4) current mirror and the first (3) bus of the power supply source there is the first (6) resistor connected. The output of the second (4) current mirror is connected by AC to the common bus of power supply sources via serially connected first (7) and second (8) correcting capacitors, the common unit of the first (7) and second (8) correcting capacitors via the second (9) resistor is connected to the input (10) of the first (11) current amplifier, the output (12) of which is connected to the input of the first (2) current mirror, besides, the common unit of the first (7) and second (8) correcting capacitors via the third (13) resistor is connected with the input (14) of the second (15) current amplifier.
 Selective amplifier / 2481697
Selective amplifier has an input signal source, a first input transistor whose collector is connected through a first frequency-setting resistor to a first power supply bus and the emitter is connected through a first current-stabilising two-terminal circuit to a second power supply bus, an output transistor whose collector is connected to the first power supply bus and the emitter is connected through a second current-stabilising two-terminal circuit to the second power supply bus, a first balancing capacitor connected between the emitter of the output transistor and the emitter of the input transistor. The input signal source is connected to the collector of the input transistor and the base of the output transistor through a second balancing capacitor; the base of the input transistor is connected through alternating current to the common power supply bus and the output of the device is connected to the emitter of the input transistor through the first balancing capacitor.
 Selective amplifier / 2480894
Selective amplifier comprises the first and second input transistors, a source of auxiliary voltage, the first and second sources of reference current, the first bus of a supply source, the third and fourth input transistors, the third source of reference current, the first frequency-setting resistor, the second bus of a supply source, an additional transistor, a load resistor, the first and second frequency-setting capacitors and the second frequency-setting resistor.
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 Differential amplifier with low-resistance inputs / 2383099
Invention relates to radio engineering and communication and can be used as a device for amplifying high-frequency analogue signals in analogue microcircuits for different functional purposes (for example in communication line drivers, operational amplifiers (OP), high-speed comparators of two voltage values etc). The differential amplifier (DA) with current inputs has first (1) n-p-n and second (2) p-n-p input transistors (T) whose emitters are connected to corresponding first (3) and second (4) current inputs of the DA, a first (5) auxiliary p-n-p T whose collector is connected to the base of the first (1) n-p-n input transistor, a second (6) n-p-n auxiliary transistor whose collector is connected to the base of the second (2) n-p-n input transistor. The base of the first (5) p-n-p auxiliary T is connected to the first (7) bias voltage source, and the emitter is connected to the bus of the first (8) power supply (PS) through a first (9) auxiliary two-terminal circuit. The base of the second (6) n-p-n auxiliary T is connected to the second (10) bias voltage source, and the emitter is connected to the bus of the second (11) PS through a second (12) auxiliary two-terminal circuit. Collectors of the second (5) auxiliary p-n-p T and the second (6) auxiliary p-n-p T are connected to each other through alternating current. The collector of the first (1) n-p-n input T is connected to the emitter of the first (5) p-n-p auxiliary T, and the collector of the second (2) p-n-p input T is connected to the emitter of the second (6) auxiliary n-p-n T.
 Solid-state power amplifier / 2416872
Device includes preliminary amplifier 1 the input of which is amplifier input, and output is connected to input of divider 2 of power 1/N, the outputs of which are connected through modules 7 of phase correction to inputs N of amplifiers 3 of the channel. Outputs of amplifiers 3 of the channel are connected through coaxial-waveguide transitions 11 to inputs of adder 4 of power N/1, to the outlet flange of which there connected through directed brancher 12 is detector head 8. Output of detector head 8 and input of module 5 of address disconnection of the channel amplifiers (ADCA) is connected to bi-directional external control bus 10. Output of module 5 of ADCA is connected to control input of module 6 of distribution of modulating pulses, N outputs of which are connected to control inputs N of amplifiers 3 of the channel, N+1 output is connected to control input of preliminary amplifier 1, and signal input is connected to input bus 9 of modulating pulse.
 Selective amplifier / 2461955
In selective amplifier the collector of input transistor is connected to the input of current mirror, emitter of input transistor is connected to the power source bus through current stabilising two-pole device, between emitters of input transistors there are sequentially connected additional corrective condenser and frequency specifying resistor.
 Selective amplifier / 2465718
In a selective amplifier, having two input transistors and two current mirrors, between the input of the device and the emitter of the input transistor there are series-connected additional resistors and balancing capacitors; the bases of the input transistors are connected to the output of the device; between the output of the device and the common power supply bus there is an additional resistor and a third balancing capacitor connected in parallel through alternating current.
 Broadband current amplifier / 2467468
Invention relates to radio engineering and communication and can be used as an analogue signal amplifier, in design of analogue microcircuits of various purposes (e.g. microwave current amplifiers, signal mixers and multipliers etc). The broadband current amplifier includes a first (15) and a second (16) additional transistor, whose bases are connected to an auxiliary voltage source (8); the emitter of the first (15) additional transistor is connected the first (2) input of the device; the emitter of the second (16) additional transistor is connected to the second (6) input of the device; the collector of the first (15) additional transistor is connected to the base of the second (9) input transistor and a first (17) additional load circuit; the collector of the second (16) additional transistor is connected to the base of the fourth (10) input transistor and a second (18) additional load circuit.
 Selective amplifier / 2467469
Present invention relates to radio engineering and communication and can be used in devices for microwave filtration of radio signals of cellular communication systems, satellite television, radar etc. In some cases, the invention enables to reduce total power consumption and realise a high-quality selective microwave device with f0=1-5 GHz. To this end, the selective amplifier has a signal source (1) connected to the input (2) of the device, a first (3) input transistor, whose collector is connected through a first (4) current-stabilising two-terminal device to the first (5) power supply bus and the input of an additional current mirror (6), the current output of which is connected through a first (7) frequency-setting resistor to the first (5) power supply bus, a first (8) balancing capacitor, connected through alternating current in parallel to the first (7) frequency-setting resistor, a second (9) current-stabilising two-terminal device, connected between the emitter of the first (3) input transistor and the second (10) power supply bus, a second (11) input transistor. Between the emitter of the first (3) and second (11) input transistors, there are series-connected second (12) balancing capacitor and second (13) frequency-setting resistor, the base of the second (11) input transistor is connected to the input (2) of the device, the collector is connected to the first (5) power supply bus, and the emitter is connected to the second (10) power supply bus through a third (14) current-stabilising two-terminal device, wherein a voltage repeater is connected between the output of the device and the base of the first (3) input transistor.
 Selective amplifier / 2468498
Selective amplifier has a signal source (1), a first input transistor (2), a first current stabilising two-terminal device (3), a first power supply bus (4), a second power supply bus (5), a second input transistor (6), a first load resistor (7), a second current stabilising two-terminal device (8), a first balancing capacitor (9), a first frequency setting resistor (10), a second balancing capacitor (11), a third input transistor (12), a fourth input transistor (13), a third current stabilising two-terminal device (14), a fifth input transistor (15) base, a voltage source (16), a fourth current stabilising two-terminal device (17), a third balancing capacitor (18).
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FIELD: radio engineering, communication.
SUBSTANCE: bidirectionality of the amplifier is achieved by using circulators or directional couplers in place of switches at inputs of the device.
EFFECT: amplification of signals in both directions without time or frequency division thereof, wider field of use of bidirectional microwave amplifiers.
2 dwg
The invention relates to electronics, and more particularly to microwave amplifiers.
Known transceiver (Huaca R.A. "Study the possibility of building odnoimennogo the relay amplification factor greater than one". ISSN 2073-3909, infocommunication technologies, volume 10, No. 2, 2012, page 76), in which the transmission and reception of signals are performed simultaneously through the same antenna, the output of which is connected to the first shoulder three-arm of the circulator. The second in the direction of circulation of the arm of the circulator is connected to the input of the amplifier, the output of which is connected with the third in the direction of circulation of the shoulder of the circulator. In a known transceiver instead of the circulator can be applied to a directional coupler. If necessary, the composition of the amplifier can be additionally introduced modulator. The disadvantage of this transceiver is a small gain, which is limited by the amount of isolation provided by applied circulator or directional coupler. The gain known transceiver can be increased by including in its feeder tract of a certain hypothetical bi-directional RF amplifier.
Known bidirectional microwave amplifier ABDA 2,4/1 (http://www.betatvcom.dn.ua/ABDA-2-4 .shtml). Known bidirectional amplifier contains, in particular, two switches, re is with two counter-directional amplifier, that allows the device to operate in half-duplex mode. Known amplifier is able to amplify signals in the forward and reverse directions.
The technical result of the present invention is to provide a bi-directional RF amplifier is able to amplify signals in both directions without their time or frequency separation. In the present invention, the technical result is achieved that, in the scheme known bidirectional amplifier switches replaced by a circulator or directional couplers.
The figure 1 shows a diagram of the bi-directional RF amplifier using a three-arm circulators.
The figure 2 shows a diagram of the bi-directional RF amplifier with using directional couplers.
Bidirectional microwave amplifier constructed according to the scheme shown in figure 1, works as follows. The signal to be amplified forward direction is supplied to the first input device, formed by the first shoulder of the first added circulator 1. The second in the direction of circulation of the shoulder circulator 1 amplified signal straight direction is fed to the input of the first amplifier 2 and is amplified therein. The amplified signal straight direction from the output of the amplifier 2 is supplied to the third shoulder additionally introduced the second CID is ulator 3 and further to the first shoulder of the second circulator 3, forming a second input device. The signal to be amplified reverse direction is supplied to the second input device, formed by the first shoulder of the second circulator 3 and then through the second in the direction of circulation of the shoulder of the second circulator 3 is fed to the input of the second amplifier 4. The amplified signal reverse direction from the output of the amplifier 4 is supplied to the third arm of the circulator 1 and further to the first arm of the circulator 1. With the proviso that the total gain applied to the amplifiers 2 and 4 does not exceed the sum of the junction between the second and third shoulders circulators 1 and 3, the device operates as a bidirectional microwave amplifier.
Similarly operates bi-directional microwave amplifier, built using directional couplers according to the scheme given in figure 2. In this embodiment, the construction of the signal to be amplified forward direction is supplied to the first input device, formed by the direct input of the shoulder of the directional coupler 5. To exit direct shoulder directional coupler 5 is connected to the input of the amplifier 2 and the output of the amplifier 2 is connected to the input otetsudai shoulder directional coupler 6. The signal to be amplified reverse direction from the second input device, formed by the direct input of the shoulder of the directional coupler 6, via the direct shoulder directional will otvetit the La 6 to the input of the amplifier 4, increases in him and through the entrance otetsudai shoulder directional coupler 5 is supplied to the first input device. With the proviso that the total gain applied by amplifier does not exceed the total junction between direct and OSVETLENIE shoulders directional couplers, the device operates as a bidirectional microwave amplifier.
In the experiment on the proposed scheme has managed to build a bi-directional microwave amplifier ferrite circulators FCC-69 operating in the frequency band (6-12) GHz and having a total gain of 28 DB at the signal flow in both directions. In the variant with the use of directional couplers managed to build a bi-directional microwave amplifier operating in the frequency band (0,45-2) GHz and having a total gain of 15 DB at the signal flow in both directions. It is pertinent to note that bi-directional microwave amplifiers circulators, significantly surpassing the strengthening of bi-directional microwave amplifiers on directional couplers, inferior to them in the bandwidth.
1. Bidirectional microwave amplifier containing two counter-directional amplifier, wherein the first input device is formed by the first shoulder of the first added circulator, the second in the direction of circulation, the shoulder of which is connected with Photomerge amplifier, the output of which is connected with the third shoulder of the second inputs of the circulator, the second input device is formed by the first shoulder of the second circulator, the second arm which is connected to the input of the second amplifier, the output of which is connected with the third shoulder of the first circulator, the total gain of the amplifiers must not exceed the sum of the junction between the second and third shoulders circulators.
2. Bidirectional microwave amplifier according to claim 1, characterized in that instead of circulators are additionally introduced directional couplers, the first input device is formed by direct input of the first shoulder of the tap, the output direct shoulder of the first coupler is connected to the input of the first amplifier, the output of the first amplifier is connected to the input otetsudai shoulder of the second coupler, the input direct shoulder of the second coupler forms a second input device, and the output of direct shoulder of the second coupler is connected to the input of the second amplifier, the output of the second amplifier is connected to the input otetsudai shoulder of the first directional coupler, the total gain of the amplifiers should not exceed the total separation between direct and OSVETLENIE shoulders directional couplers.
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