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.
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| Number | Title | Issue Date |
| 7266485 | Method for making equivalent circuit model of passive element, simulator, and storage medium A method of deriving an equivalent circuit model for a passive component includes a first step of providing a given frequency characteristic of a capacitor, a second step of forming one of an RC circuit, an RL circuit, and an RCL circuit using frequency-independent ... | 09/04/2007 |
| 7170444 | Non-linear dispersive pulse generator A non-linear dispersive pulse generator for producing pulsed radio frequency electrical signals includes a non-linear dispersive electrical circuit (1) incorporating at least one non-linear element (2) made of a material sensitive to low power signals ... | 01/30/2007 |
| 6737933 | Circuit topology for attenuator and switch circuits An attenuator for radio frequency applications includes variable shunt elements and series transmission elements. The impedances of the variable shunt elements and the series transmission elements are selected so that the impedance of the attenuator at the input ter... | 05/18/2004 |
| 6556096 | Artificial line An artificial line, particularly an artificial electric line, and specifically an artificial line having a constant group delay in a wide frequency range (octave bandwidths). The artificial line comprises two identical inductors of the magnitude L connect... | 04/29/2003 |
| 6137352 | Circuit arrangement for protection of HF-input-circuit on telecommunications devices The fine protection circuit arrangement is to reduce the remaining residual impulses on gas tube charge eliminators. This is to be achieved by means of a cascading of a gas tube charge eliminator or a λ/4 shorting stub with a fine protection circuit. The... | 10/24/2000 |
| 5923227 | Non-linear dispersive transmission line A non-linear dispersive transmission line includes a plurality of substantially block-like shaped capacitor elements (4) arranged in sequence in at least two arrays. The even numbered elements (4b, 4d etc) extend side by side to form a first array and the... | 07/13/1999 |
| 5768692 | Transmission and reception matching method for a cordless communication apparatus and apparatus thereof A cordless communication apparatus which improves the performance of data transmission and reception by preventing the bandpass loss and the deterioration of frequency characteristics, which are caused during coupling a transmission output unit and recept... | 06/16/1998 |
| 5416450 | Ferrite loaded constant impedance element and a constant phase circuit using it in an ultra-wide frequency range To realize an element presenting a constant impedance throughout an extremely wide frequency range and a circuit supplying a high frequency signal having a constant phase throughout the same wide frequency range, a ferrite-loaded line element, a real part... | 05/16/1995 |
| 5363069 | Electronically tunable gain equalizer An equalizer circuit for equalizing RF frequencies implemented as an MMIC or MIC having a series of microstrip transmission lines between an RF input terminal and an RF output terminal and having at least one shunt path comprised of a series combination o... | 11/08/1994 |
| 4970478 | Matched microwave variable attenuator A variable attenuator includes a plurality of circuit cells, each containing a variable resistance shunt element, cascaded to form an artificial transmission line with distributed loss represented by the variable resistance shunt element. Parameters of th... | 11/13/1990 |
| 4932615 | Railroad track simulator for assessing track signal susceptibility to electric power line interference A railroad track segment simulator for assessing track signal susceptibility to electric power line interference including a circuit including a series dc resistor, a series inductor, and an inductive network representing characteristic impedance of an el... | 06/12/1990 |
| 4894628 | Transmission delay line and method of manufacture A transmission delay line including a helical channel (2) formed in the surface of a cylinder (1), with a conductive sleeve (7) fitted to the cylinder to close the channel. A helical conductive member (4) is positioned within the channel (2) and spaced fr... | 01/16/1990 |
| 4833431 | Triple-resonance pulse transformer circuit A triple resonance circuit is provided for improving the efficiency of high voltage pulses for pulse transformer applications. This circuit provides high transfer of energy when the normal mode frequencies of the coupled circuit are in the ratios of certa... | 05/23/1989 |
| 4829272 | Electromagnetic variable delay line system An electromagnetic variable delay line system in which the change in the output impedance of the delay line as its delay time is varied is compensated by an electronic device such as a field effect transistor which is connected across the output end of th... | 05/09/1989 |
| 4821003 | Electromagnetic variable delay line with linear compensation This electromagnetic variable delay line includes: a delay line, which includes an inductance device and at least one variable capacitance diode connected thereto, and possessing a non linear operational property; and a circuit device for supplying an out... | 04/11/1989 |
| 4675627 | High permeability rolled delay line of the coplanar type A time delay device for adjusting the arrival time of an electronic signal at a specific area in a circuit pattern is presented. The time delay device is comprised of a coplanar flexible circuit having a conductive pattern consisting of a signal line in a... | 06/23/1987 |
| 4675626 | Carrier assembly for mounting a rolled coplanar delay line A mounting or carrying device utilized in conjunction with an electronic component suitable for use on a printed wiring board, the electronic component being capable of adjusting the arrival time of signals in high speed logic systems is presented. Prefer... | 06/23/1987 |
| 4675625 | Rolled delay line of the coplanar line type A time delay device for adjusting the arrival time of an electronic signal at a specific area in a circuit pattern is presented. The time delay device is comprised of a coplanar flexible circuit having a conductive pattern consisting of a signal line in a... | 06/23/1987 |
| 4614921 | Low pass π section digital phase shifter apparatus A low pass π section digital phase shifter apparatus having an inductor and a diode connected in series between two identical parallel circuits. The parallel circuits connect to the series inductor/diode circuit at both the input and output and each circ... | 09/30/1986 |
| 4604593 | π-section digital phase shifter apparatus An extra high frequency π-section digital phase shifter apparatus having a diode connected between two identical parallel shunt circuits. The parallel shunt circuits connect to the series inductor/diode circuit at both the input and output and each paral... | 08/05/1986 |
| 4594557 | Traveling wave video detector A traveling wave video detector utilizing microwave integrated circuit techniques provides increased dynamic range, increased rf bandwidth up to 100 Ghz and improved impedance matching at high input power levels. The video detector comprises an artificial... | 06/10/1986 |
| 4575693 | High current pulse modulator with wave shaping capability A pulse modulator including a pulse forming network comprising a multiple section ladder network of series inductors and shunt capacitors. The series inductors are flat, spiral inductors etched on microstrip. The pulse forming network is charged negativel... | 03/11/1986 |
| 4570136 | Electromagnetic delay line An electromagnetic delay line of a distributed constant type making use of a zigzag strip as a strip line and suitable for use in very high frequency ranges. The zigzag strip comprises electroconductive strips which are bent in such a manner that they are... | 02/11/1986 |
| 4565981 | Electromagnetic delay line An electromagnetic delay line of novel construction is disclosed which comprises an inductance element having a conductor wound as regularly spaced in the form of a single-layer solenoid and a plurality of capacitors inserted to connect the conductor of t... | 01/21/1986 |
| 4556856 | Planar, lumped element, matched N-way power divider An N-way, lumped element, matched, isolated branch power divider in planar form is disclosed. Lumped inductors are disposed on the top surface of a dielectric substrate, an isolation resistor network is disposed on the bottom surface of the substrate and ... | 12/03/1985 |
| 4554608 | Connector for electromagnetic impulse suppression A connector is provided for the suppression of electromagnetic impulses traveling along a radio frequency transmission line. Paired first and second electrical connectors are provided for being operatively interposed along the transmission line. First and... | 11/19/1985 |
| 4525691 | Variable delay line A lumped constant type ultra-high speed variable delay line includes an inductance element consisting of a single layer solenoid formed by winding a conductor with a prescribed pitch, a capacitor connected between said conductor and ground at each turn, a... | 06/25/1985 |
| 4409637 | Connector for electromagnetic impulse suppression A connector is provided for the suppression of electromagnetic impulses traveling along a radio frequency transmission line. Paired first and second electrical connectors are provided for being operatively interposed along the transmission line. First and... | 10/11/1983 |
| 4359764 | Connector for electromagnetic impulse suppression A connector is provided for the suppression of electromagnetic impulses traveling a radio frequency cable. Paired first and second electrical connectors are provided for being operatively interposed along the signal cable. A spacer or mounting device is p... | 11/16/1982 |
| 4302735 | Delay line compensation network A timing generator circuit includes a pair of multitap cascaded delay lines of like construction. Each delay line includes a plurality of sections each of which are constructed to provide the same increment of delay at each tap. A capacitive element conne... | 11/24/1981 |
| 4296389 | Crimped coax reflective dispersive delay line A dispersive delay line and method for fabricating the delay line is described in which coaxial cable is utilized and in which the dispersive or bandpass characteristic is established by the crimping of the coaxial cable in such a manner that the axial cr... | 10/20/1981 |
| 4287492 | Concentrated constant type delay device A concentrated constant type delay device can be assembled in simple steps and has simple and stable structure. The delay device comprises a composite capacitor which comprises a common electrode placed on one surface of a dielectric and a plurality of se... | 09/01/1981 |
| 4203081 | Passive circuit element for influencing pulses A passive circuit element for influencing pulses has two series-connected inductances which connect a first input terminal to a first output terminal, a first capacitor which is connected between the connection point of the inductances and the second term... | 05/13/1980 |
| 4152679 | Microminiature electrical delay line utilizing thin film inductor array with magnetic enhancement and coupling A microminiature electrical delay line utilizes an m-derived filter formed by depositing a film of permalloy or other high permeability metal on a quartz or other dielectric substrate, then depositing a layer of quartz or other dielectric over the permall... | 05/01/1979 |
