| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 21 | Distribution and Amplification Systems that Automatically Terminate to a Matched Termination in Response to Power Interruptions and Related Methods | US12779119 | 2010-05-13 | US20110283331A1 | 2011-11-17 | Robert Ryan Riggsby |
| Distribution and amplification systems for cable television networks include a tap unit having a first RF tap port and a second RF tap port, a voice-over IP (“VoIP”) RF signal amplifier and a non-VoIP RF signal amplifier. The VoIP RF signal amplifier is connected to the first RF tap port of the tap unit, and includes an amplified signal path and a passive, non-interruptible signal path. The non-VoIP RF signal amplifier is connected to the second RF tap port of the tap unit, and includes an amplified signal path. The VoIP and non-VoIP RF signal amplifiers are each configured to terminate their amplified signal paths to respective matched terminations in response to a power outage. | ||||||
| 22 | Signal Amplifiers Having Communications Paths that Automatically Terminate to a Matched Termination in Response to a Power Interruption and Related Methods | US12689267 | 2010-01-19 | US20100117728A1 | 2010-05-13 | Robert Ryan Riggsby |
| RF signal amplifiers are provided that include an RF input port, a first RF output port, a second RF output port and a power input for receiving electrical power. These amplifiers further include a directional coupler having an input that is coupled to the RF input port, a first output and a second output. The second output of the directional coupler is connected to the second RF output port via a non-interruptible communication path. A first switching device having an input, a first output and a second output is also provided. The second output of the first switching device is coupled to a first matched termination. A first diplexer is provided that is coupled between the first output of the directional coupler and the input of the first switching device. A first power amplifier is coupled to the first output of the first switching device, and a second diplexer is coupled between an output of the first power amplifier and the first RF output port. The first switching device is configured to pass signals received at the input to the first switching device to the first output of the first switching device when electrical power is received at the power input and is further configured to terminate signals received at the input to the first switching device through the second output of the first switching device when an electrical power feed to the power input is interrupted. | ||||||
| 23 | Variable equalizer apparatus | US12213214 | 2008-06-16 | US20090041106A1 | 2009-02-12 | Edward Perez; David Wallis |
| A variable equalizer apparatus for forward and/or reverse equalizers in an amplifier. The system can include a structure to allow continuous contact of the signal flow as an equalizer is removed; jumpers with fixed resistors and associated capacitors and inductors to produce a variable range over many different values; and/or variable resistance potentiometers with fixed resistors and associated capacitors and inductors to produce a variable range over separate value equalizers. | ||||||
| 24 | HIGH-FREQUENCY SIGNAL COUPLING DEVICE | US11675627 | 2007-02-15 | US20070205845A1 | 2007-09-06 | Georg Post; Chafik Meliani |
| A device for coupling high-frequency signals between a first component and a second component is adapted to supply a first bias voltage-current pair to the first component and a second bias voltage-current pair to the second component. | ||||||
| 25 | Arrangement and method for controlling an amplifier circuit corresponding to energy uptake in the amplifier circuit | US10934899 | 2004-09-03 | US07126414B2 | 2006-10-24 | Herbert Huber; Tibor Olah |
| An amplifier circuit (1) is disclosed, wherein with a view to reducing the leakage power of the amplifier circuit (1) a current path (6) is provided between a first output terminal (A1) and a second output terminal (A2) of the amplifier circuit, said current path being open in the case of an uptake of energy at the output of the amplifier circuit (1), so that the electrical energy taken up by the one output terminal (A1) can be drained away immediately via the other output terminal (A2). If no uptake of energy is taking place via the output of the amplifier circuit (1) but instead electrical energy is being released by the amplifier circuit (1), the current path (6) between the two output terminals (A1, A2) is closed. | ||||||
| 26 | Cable television reverse amplifier | US11037917 | 2005-01-18 | US20060041922A1 | 2006-02-23 | Jay Shapson |
| A signal input port of a reverse amplifier is provided by an FIC connector, for direct connection to an F-port output of a forward amplifier, thereby eliminating the need for jumper cables. Also, via this connection, the reverse amplifier remotely provides power to the forward amplifier. | ||||||
| 27 | Asymmetric, optimized common-source bi-directional amplifier | US10632683 | 2003-08-01 | US20050026571A1 | 2005-02-03 | Jeffrey Yang; Matt Nishimoto; Yun-Ho Chung; Michael Battung; Richard Lai |
| A common source, bi-directional microwave amplifier is described. More particularly, the present invention is a microwave, common source, bi-directional amplifier that includes a first amplification path and a second amplification path wherein the signal directional flow is controlled through the selective biasing of the first amplification path and the second amplification path. Each amplification path is designed to optimize desired performance. For signal flow through the first amplification path, the first amplification path is biased-on and the second path is biased-off. For signal flow through the second amplification path, the second amplification path is biased-on and the first path is biased-off. | ||||||
| 28 | Dual band bidirectional amplifier for wireless communication | US10210054 | 2002-08-02 | US20040192194A1 | 2004-09-30 | Liping Zhen; David L. Wills |
| The dual band bi-directional amplifier has only one amplifier chain having an uplink amplifier and a downlink amplifier, but can nonetheless amplify signals from two frequency bands in both an uplink and a downlink direction between two antennas. This is possible by using duplexers and circulators to separate signals to and from each antenna into the two bands. In particular, for each frequency band handled by the circuit, the dual band bi-directional amplifier has a duplexer set for separating the signals from one of the bands into the uplink and downlink direction. In the case of a dual band amplifier, there are two sets of duplexers, one for each band. By using duplexers and circulators to differentiate signals in different bands travelling in different directions, there is no need for additional amplifier chains, which increase the manufacturing costs. | ||||||
| 29 | ASYMMETRIC, VOLTAGE OPTIMIZED, WIDEBAND COMMON-GATE BI-DIRECTIONAL MMIC AMPLIFIER | US10160140 | 2002-05-30 | US20030222719A1 | 2003-12-04 | Jeffrey M. Yang; Yun-Ho Chung; Matt Y. Nishimoto |
| A bi-directional amplifier (10) for a transceiver module for amplifying both transmit signals and receive signals propagating in opposite directions. The amplifier (10) includes first and second common gate FETs (22, 24) electrically coupled along a common transmission line (20). A first variable matching network (28) is electrically coupled to the transmission line (20) between a transmit signal input port (12) and the first FET (22), and a second variable matching network (30) is electrically coupled to the transmission line (20) between a receive signal input port (14) and the second FET (24). An interstage variable matching network (32) is electrically coupled to the transmission line (20) between the first and second FETs (22, 24). A DC voltage regulator (34) provides a DC bias signal to the matching networks (28, 30, 32) and the FETs (22, 24) so that different signal amplifications and different impedance matching characteristics can be provided for the transmit signal and the receive signal. | ||||||
| 30 | Multistage variable gain amplifier circuit | US814250 | 1997-03-11 | US5900781A | 1999-05-04 | Sadao Igarashi; Kazuharu Aoki; Satoshi Urabe |
| A multistage amplifier circuit comprises a current constant mode variable amplifying circuit for amplifying an input signal and current variable mode variable amplifying circuits and for further amplifying the signal amplified by the first variable amplifying circuit. An AGC voltage VAGC is commonly applied between the bases and emitters of an amplification degree control transistor of the current constant mode variable amplifying circuit and amplification degree control transistors of the current variable mode amplifying circuits. Collector currents of the transistors change exponentially with respect to the linearly-varied AGC voltage VAGC. Further, currents each proportional to the collector current of the transistor flow in the transistors. Thus, the gain PG �dB! of the current constant mode variable amplifying circuit changes linearly with the AGC voltage VAGC. | ||||||
| 31 | Input/output interface circuit for digital and/or analog signals | US262590 | 1994-06-20 | US5565806A | 1996-10-15 | Paolo Cordini; Giorgio Pedrazzini; Domenico Rossi |
| The present invention relates to an integrated input/output interface for low and/or high voltage range signals of the digital and/or analog type. It comprises essentially a power amplification circuit block (2) having at least one low voltage range input terminal (A) and at least one high voltage range output terminal (B), and a second amplification circuit block (3) having a high voltage range input terminal connected to said high voltage range output terminal (B) and at least one low voltage range output terminal (D). A conventional circuit block (4) prevents a high voltage range signal being input to said high voltage range terminal (B) from propagating through the first power amplification circuit block (2), so that it only affects the second amplification circuit block (3). This interface is implemented in mixed high voltage bipolar/CMOS/DMOS technology. | ||||||
| 32 | Symmetric bi-directional amplifier | US677365 | 1991-03-26 | US5105166A | 1992-04-14 | Toshikazu Tsukii; S. Gene Houng; Manfred J. Schindler |
| A transceiver module includes a bi-directional amplifier having a pair of symmetric signal paths for amplification of both transmit and receive signals is described. The amplifier is a bi-directional amplifier and includes a pair of symmetric signal paths. The amplifier is disposed between a pair of r.f. switches to provide a pair of signal paths between two terminals of the module. A phase shifter is coupled between one of the terminals of the module and one of the r.f. switches, wherein the second terminal of the module is coupled directly to the other one of the pair of switches. | ||||||
| 33 | Bilateral amplifier | US463725 | 1983-02-04 | US4554415A | 1985-11-19 | Nakamichi Sasano |
| A bilateral amplifier is disclosed, which comprises a negative impedance converter which is connected between two signal sources similar in character when viewed as loads. One of the signal sources is utilized as a load for negative impedance conversion with respect to the other signal, while the other signal source is utilized as a load for negative impedance conversion with respect to the first-mentioned signal source. | ||||||
| 34 | Amplifier circuit for transmission lines | US3706862D | 1971-06-28 | US3706862A | 1972-12-19 | CHAMBERS CHARLES W JR |
| A circuit for increasing the amplitude of signals transmitted through a bi-directional voice transmission line. A series amplifying network energized in accordance with the voltage across the line produces a signal voltage in aiding relationship to a transmitted signal. A shunt amplifying network energized in accordance with the current through the line produces a signal current in aiding relationship to that transmitted signal. A switching circuit controls the phase relationship between the input and output quantities of each amplifying network in accordance with the direction of transmission of the signal of highest amplitude at any given time, to amplify signals transmitted in that dominant direction and to suppress echo signals transmitted in the other or non-dominant direction. Circuitry is provided to vary the amplitudes of the input signals to the series and shunt amplifying networks as a function of the impedance of the line to provide stable amplification and fidelity of reproduced signal over a wide range of frequencies and transmission line impedances.
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| 35 | Bidirectional additive amplifier | US3573402D | 1969-03-25 | US3573402A | 1971-04-06 | CHAMBERS CHARLES W JR |
| An electrical, two-terminal, bidirectional amplifier circuit which senses the direction of flow of a signal current through an ancillary source-load loop in which current flow may be bidirectional, to insert a boost voltage additively in series aiding relationship with the signal current irrespective of the direction of current flow in that source-load loop and then senses the instantaneous state of the signal current to control the magnitude of the added power. The amplifier is insensitive to the direction of transmitted intelligence through the source-load loop by the signal current and inserts the boost voltage additively as required, in the face of the interchange of position of the sources and receivers of intelligence with respect to the amplifier terminals as, for instance, in telephone circuitry.
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| 36 | Selective suppression control of amplifiers in intercommunication systems | US3530245D | 1967-05-11 | US3530245A | 1970-09-22 | BERNS CHARLES |
| 37 | Electromagnetic wave amplifier including a negative resistance semiconductor diode structure | US3526844D | 1969-02-03 | US3526844A | 1970-09-01 | BARTELINK DIRK J; CHAWLA BASANT R |
| 38 | Bidirectional amplifier | US3519765D | 1967-02-02 | US3519765A | 1970-07-07 | HUBER ALVIN J |
| 39 | Koenig | US2733304D | US2733304A | 1956-01-31 | ||
| 40 | Two-way transistor electrical transmission system | US9650049 | 1949-06-01 | US2662122A | 1953-12-08 | RYDER ROBERT M |
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