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| Number | Title | Issue Date |
| 6937102 | Low bias current/temperature compensation current mirror for linear power amplifier A power amplifier circuit whose performance is optimized by operating its stages in substantially close to a Class B mode by reducing quiescent current during low driver signal levels. As the driver signal amplitude increases, the operation of the amplifier is confi... | 08/30/2005 |
| 5617059 | Power amplifier, and associated method, for a microwave repeater station A microwave amplifier for amplifying microwave signals, such as the microwave signals received by a microwave repeater station. The amplifier is formed of solid state amplifier-transistors to which the microwave signals are applied by way of transmission ... | 04/01/1997 |
| 5528630 | Coupler for communication systems which utilize more than one frequency band A signal coupler includes a transformer having a primary and a secondary winding. Each transformer winding has a pair of associated winding terminals and is also split at an intermediate winding position to form a pair of supplemental winding terminals. C... | 06/18/1996 |
| 4967163 | Combined limiting/AGC IF system A gain control system for a receiver that combines some of the features of oth limiting and AGC. The AGC loop of the present invention has a relatively long time constant which reduces the gain so that the desired signal is only 10 to 15 db into limiting. ... | 10/30/1990 |
| 4649548 | Local computer network transceiver A local computer network transceiver is provided for a distributed control local computer network which applies a signal to a medium which has a DC component wherein isolation is implemented at the medium interface without need for direct current coupling... | 03/10/1987 |
| 4535298 | Driver circuit The present invention relates to a driver circuit for use in connecting a source of RF drive voltage to a power amplifier stage. The driver is comprised of a transformer having a center tap, a first terminal connected to a first branch of the transformer ... | 08/13/1985 |
| 4471316 | Electric oscillation generator Disclosed is an electric oscillation generator comprising an exciter and an output amplifier stage utilizing a vacuum tube connected in a common-grid circuit. A section of the input circuit of the vacuum tube is connected to the output of the exciter. The... | 09/11/1984 |
| 4360784 | Transformer coupled isolation amplifier A transformer-coupled isolation amplifier which has a minimally sized transformer, high common mode rejection, and a highly linear response over a wide dynamic range. A first chopper periodically alternates by 180° the connection of the input through a h... | 11/23/1982 |
| 4320354 | Fail-safe band-pass circuit A vital narrow band-pass filter which operates in a fail-safe manner and includes a single stage input resonant circuit, an intermediate multistage parallel resonant circuit, and an output amplifying circuit for passing a given center carrier frequency si... | 03/16/1982 |
