Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7760017 | Integrated circuit having on die structure providing capacitance in amplifier feedback path An amplifier structure includes shield conductors that are provided spatially adjacent to elongated feedback signal lines that couple a feedback circuit to an amplifier input. The shield conductors are provided between the feedback signal lines and a ground plane, w... | 07/20/2010 |
| 7359206 | Radio frequency isolation system and cover assembly for vacuum electron device A self-guiding cover assembly for a vacuum electron device (VED) enclosure (704, 1316) has a cover (1002, 1302), a pair of guide plates, and a pair of guide elements (1304, 1306). The cover has at least one electrical connector (1314) dis... | 04/15/2008 |
| 7355857 | Heat sink gasket A receptacle assembly is provided having a gasket interposed between a heat sink and the receptacle, in order to provide EMI shielding and limit leakage from an opening in the receptacle that allows the heat sink to engage an electronic module inserted in the recept... | 04/08/2008 |
| 7259625 | High Q monolithic inductors for use in differential circuits The present invention provides a differentially driven monolithic inductor circuit having a shield differentially driven by phase shift buffers and a single-ended monolithic inductor circuit having single-ended shields driven by phase shift buffers, both inductor ci... | 08/21/2007 |
| 7133705 | Portable power amplifier A portable power amplifier includes portable encapsulating cases, a printed board incorporated in those encapsulating cases, and a power amplifying device mounted on this printed board. An antenna switch and an antenna are provided near the power amplifying device, ... | 11/07/2006 |
| 7102075 | Electronic circuit unit and its sealed structure A first frame is arranged on a printed circuit board to enclose a first circuit that radiates a noise. The printed circuit board also has mounted thereon a second circuit that has a need to be protected from the noise. A second frame is arranged on the printed circu... | 09/05/2006 |
| 7068521 | Semiconductor device In a semiconductor device such as a high-frequency power amplifier module, a plurality of amplifying means are formed on a semiconductor chip which is mounted on a main surface of a wiring substrate, and electrodes of the semiconductor chip are electrically connecte... | 06/27/2006 |
| 6624692 | Radio frequency amplifier with a waveguide filter for isolating amplifying elements A radio frequency amplifier includes a waveguide filter positioned between a first and a second amplifier circuit, which reduces the distortion between the amplifier circuits. The waveguide includes a main body having a cavity.... | 09/23/2003 |
| 6624703 | Terminal arrangement for an electrical device This invention provides a terminal arrangement for an electrical device. The electrical device includes a ground terminal on its outer surface that has a relatively large surface area. The electrical device also includes a plurality of contact terminals t... | 09/23/2003 |
| 6611170 | Angular rate amplifier with noise shield technology An angular rate amplifier, which is adapted to amplify useful signals, which are proportional to rotation motion of a carrier, and to suppress noise, which is not proportional to rotation motion of a carrier, in output signals from an angular rate produce... | 08/26/2003 |
| 6473314 | RF power amplifier assembly employing multi-layer RF blocking filter A low cost radio frequency interference filter assembly comprises a multiple layer structure including a middle trace layer disposed between an upper ground layer and lower ground layer. Non-conductive insulation layers are disposed between the middle tra... | 10/29/2002 |
| 6160453 | High-frequency power amplifier A high-frequency power amplifier has a high-frequency input, a high-frequency output and at least one power transistor connected therebetween. The power transistor has a first electrode serving as a control input, a cooling terminal connected to a second ... | 12/12/2000 |
| 6144260 | Amplifier The present invention relates to an amplifier comprising a first amplification circuit (1) formed of a first transistor (10) and a second amplification circuit (2) formed of a second transistor (11), wherein a first filter (3) having a desired pass-band a... | 11/07/2000 |
| 6133787 | Method and apparatus for controlling the common mode impedance misbalance of an isolated single-ended circuit A method and apparatus for controlling the common mode impedance misbalance of an isolated single-ended circuit for all common mode paths, thereby allowing the balancing of the common mode impedances which reduces common mode effects while maintaining the... | 10/17/2000 |
| 6118672 | Tuner structure and cable modem tuner using the same The tuner structure of the present invention includes: a circuit board on which electronic circuit components such as transistors and resistors have been mounted; a chassis angle; and a shield cover. In the tuner structure, a feedthrough capacitor for inp... | 09/12/2000 |
| 6040739 | Waveguide to microstrip backshort with external spring compression A new amplifier module construction enhances the manufacturer's ability to repetitively construct multiple copies of millimeter microwave amplifiers having performance characteristics that are consistent with one another, particularly in input VSWR ratio ... | 03/21/2000 |
| 6040741 | Preamplifier for amplifying signal voltages from a signal source with high source impedance A preamplifier for amplifying signal voltages from a signal source with high source impedance has a signal input connected to the signal source, a first supply voltage terminal connected to the first power supply voltage potential, a second supply voltage... | 03/21/2000 |
| 6011700 | Shielding case A shielding case eliminates the problem in that the fixing portion of a feed-through capacitor juts out of the cabinet thereof; it does not affect the mounting conditions or the like of internal electronic components even if a part of the cabinet is bent ... | 01/04/2000 |
| 5990736 | High frequency amplifier with a guard circuit and a radio wave transmission apparatus including the same A high frequency power amplifier including: a multi-layer printed-circuit board, a transistor for amplifying an input signal and outputting the amplified signal, a first print circuit pattern for receiving the input signal and supplying the input signal t... | 11/23/1999 |
| 5831476 | Voltage-tuned millimeter-wave amplifier and method for tuning A method (140) for tuning millimeter-wave FET amplifiers (20) during manufacture, through the application (144) of a gate bias voltage (52) so as to tune the FET (22) of the amplifier (20) to match an input circuit (24), and through the application (146) ... | 11/03/1998 |
| 5814761 | Passive EMI dissipation apparatus and method A passive Electromagnetic Interference (EMI) dissipation apparatus typically utilized with an active host component to reduce self-generated and externally-generated electromagnetic interference and to improve the performance of the host component is disc... | 09/29/1998 |
| 5412340 | Shield structure for use in microwave circuit device The present invention provides a shield structure for shielding a microwave circuit device, which can establish a reliable electric contact between the ground wiring patterns of a circuit substrate, and can completely prevent external noise from entering ... | 05/02/1995 |
| 5352991 | Power amplifier assembly A power amplifier assembly that dissipates a maximum of one thousand one hundred watts includes a power amplifier circuit and a chassis that has an overall volume of 0.02 cubic meters. The chassis includes a heat sink base that contains a mounting pattern... | 10/04/1994 |
| 5274340 | Microwave multistage amplifier In a microwave multistage amplifier, a shield casing (8) has a partition plate (7) integrally moulded with and disposed in the casing (8); microwave amplifiers (5, 6) are arranged on a dielectric substrate so as to locate the partition plate therebetween;... | 12/28/1993 |
| 5087888 | Light weight power amplifier assembled with no hand soldering or screws A way of constructing modular RF power amplifiers. RF power amplifiers are constructed of a standardized chassis plus a number of RF power modules with each such power module containing provisions for self-cooling.... | 02/11/1992 |
| 5072193 | Wire shielding for RF circuit boards and amplifiers The ease of manufacture and performance of printed circuit board RF amplifier and other electronic apparatus requiring a high degree of internal shielding is improved by distributing DC or other signals through rigid conduits having at least one flat side... | 12/10/1991 |
| 4963833 | High powered amplifier and heat sinking apparatus An improved high powered power amplifier, where the improvement comprises an improved grounding technique by decreasing the contact resistance, and an improved thermal transfer and dissipating technique. The heat generated by a power amplifier device is t... | 10/16/1990 |
| 4751471 | Amplifying circuit particularly adapted for amplifying a biopotential input signal An amplifying circuit for amplifying a bipotential input signal, including an insulating housing having a conductive input contact mounted on the housing and adapted to engage a human body so that the bipotential input signal applied to the contact; a lea... | 06/14/1988 |
| 4695678 | Electronic device carrier An electronic device carrier structure includes at least one signal line which is connected to an electronic device, such as a one-chip operational amplifier, and at least a pair of guard lines extending substantially along the corresponding signal line e... | 09/22/1987 |
| 4679002 | Electromagnetically shielded narrow band electroencephalographic amplifier A low noise, high gain differential amplifier suitable for EEG amplification is constructed in a shielded metal enclosure, preferably on a ground plane circuit board. The amplifier is battery powered to eliminate all possibility of noise from the power sy... | 07/07/1987 |
| 4625178 | Feedforward gain block with mirror image error amplifier A feedforward amplifier arranged as a unitized gain block particularly suitable for use in cable communication systems. The feedforward amplifier includes a single circuit board integrally mounting the directional couplers, delay lines and attenuator circ... | 11/25/1986 |
| 4585999 | Radiofrequency amplifier based on a dc superconducting quantum interference device A low noise radiofrequency amplifier (10), using a dc SQUID (superconducting quantum interference device) as the input amplifying element. The dc SQUID (11) and an input coil (12) are maintained at superconductivity temperatures in a superconducting shiel... | 04/29/1986 |
| 4412183 | AC Resistor attenuator and associated amplifier circuits An AC resistor attenuator with low parasitic capacitance coupling and, thus, a substantially constant attenuation value over a relatively wide frequency range is disclosed. The AC resistor attenuator comprises a first elongate resistor substantially entir... | 10/25/1983 |
| 4051444 | Amplifier structure for low-level voltage measurements A magnetic flowmeter system having a high impedance double ended AC preamplifier stage for amplifying voltages induced in a fluid flowing in and transverse to the field of an AC energized electromagnet. The preamplifier output voltages are amplified in a ... | 09/27/1977 |
