Matches 101 - 150 out of 195 < 1 2 3 4 >


Match Document Document Title
5276415 Selectable AC or DC coupling for coaxial transmission lines  
A compact selectable AC/DC coaxial coupling having a cylindrical signal coupling capacitor disposed within a section of coaxial transmission line. Inner and outer plates of the capacitor are...
5264064 Method and system for radio frequency energy transmission in an imperforate composite structure  
A method and system for controlling the transmission of radio frequency energy through an imperforate multi-layer fiber and resin composite structure. Multiple segments of conductive mesh are...
5212462 Stripline microwave module having means for contactless coupling between signal lines on different planar levels  
The present invention relates to a stripline microwave module comprising: at least one first line situated in a first plane; at least one second line; and at least one coupling opening situated in...
5191303 High speed probe attenuator  
A high speed probe attenuator has an attenuator with a plurality of resistors connected in series between a probe input and an instrument output. A plurality of capacitors are coupled in parallel...
5120705 Superconducting transmission line cable connector providing capacative and thermal isolation  
A transmission line using superconductors instead of conventional conductors substantially reduces ohmic losses compared to conventional conductors. The superconductors are cooled by refrigerant...
5105332 Capacitor network for coaxial connector  
A field installable capacitor network assembly screws onto an externally threaded coaxial connector and makes contact with signal ground. The network assembly also makes a reliable low impedance...
5105201 Glass mounted antenna for car radio  
A glass mounted antenna for car radio including an antenna element having a length that is in a resonant or non-resonant state with respect to FM frequencies, resonance circuits made up with...
5084864 Broadband, inductively coupled, duplex, RF transmission system  
A broadband, inductively coupled, duplex, radio frequency (RF) transmission system for communcating between a central unit (10) and a plurality of remote units (31) is disclosed. The central unit...
5083136 Transmission line coupling device with closed impedance matching loop  
A transmission line coupling device comprising a pair of coils each having an electrical length of one half of the wave length of transmitted frequency. Respective ends of the coils are connected...
5073761 Non-contacting radio frequency coupler connector  
A radio frequency coupler connector includes a housing having first and second housing portions. The first housing portion includes a first open-ended launcher operatively connected to a first...
5072198 Impedance matched coaxial transmission system  
A coaxial transmission line system includes a coaxial transmission line having a center conductor and an outer conductor, and an rf generator. A stub antenna is coupled to the generator, and...
5057847 RF connector for connecting a mobile radiotelephone to a rack  
An RF connector for connecting a radiotelephone (1) to an external antenna, whereby the telephone and a corresponding device rack (2) are connected to the external antenna by two pairs of matching...
4987391 Antenna cable ground isolator  
A coaxial cable isolator is presented which serves to reduce or eliminate ground loop induced hum and interference in audio-video entertainment systems connected to externally grounded antenna...
4972505 Tunnel distributed cable antenna system with signal top coupling approximately same radiated energy  
A distributed radio antenna system for extending radio communications into confined regions into which external radio signals do not penetrate, the system having separate transmitting (TX) and...
4949001 Partial discharge detection method and apparatus  
A method and device for detecting a partial discharge pulse in a high voltage conductor in the stator of a motor, turbine generator or the like, comprising a conductive plate having an insulated...
4908585 RF transformer and diagnostic technique therefor  
An RF transformer employs at least three elongated conductive elements in generally parallel spaced relationship. At least a first inductive element is connected between a pair of the conductive...
4877999 Method and apparatus for producing an hf-induced noble-gas plasma  
The invention concerns a method and apparatus to produce a noble-gas plasma for excitation in optical emission spectrometry. The apparatus includes an hf generator feeding an oscillation circuit...
4814729 Precisely tunable impatt diode module for weather radar apparatus  
A microstrip IMPATT circuit tuning mechanism for use with RF producing IMPATT diode combinations including a microstrip circuit board and a external load line connected by a coupling spring...
4800343 DC cutting circuit  
A DC cutting circuit for passing a signal having a selected wavelength from input side circuitry to output side circuitry while cutting from said signal any DC component therein, which includes a...
4792725 Instantaneous and efficient surface wave excitation of a low pressure gas or gases  
A system for instantaneously ionizing and continuously delivering energy in the form of surface waves to a low pressure gas or mixture of low pressure gases, comprising a source of rf energy, a...
4785202 Semiconductor integrated circuit device having an integrally formed bypass capacitor  
A semiconductor integrated circuit device according to the present invention comprising an electric circuit formed in a semiconductor substrate, said circuit including first and second nodes...
4700152 Non-contacting signal coupling device  
A non-contacting type of high frequency signal coupling arrangement for coupling RF signals to a television receiver at one or more workstations for alignment or test includes a first transmission...
4697159 Tuning capacitors with selectable capacitance configurations for coupling between microwave circuits  
A tuning capacitor arrangement for a microwave circuit including, on a substrate, first and second conductors to be capacitively joined. The tuning capacitor arrangement includes first and second...
4695801 Matched guadrature coils for MRI with minimized intercoil coupling  
First and second co-located axially extending RF coils are displaced spatially with respect to one another by 90 degrees so as to produce a pair of RF signals from the enclosed volume which are in...
4616195 Coaxial phase shifter for transverse electromagnetic transmission line  
A coaxial phase shifter for shifting the phase of a signal being transmitted along a transverse electromagnetic transmission line. The phase shifter is in line with the transmission line's inner...
4559506 Temperature compensated coaxial cable isolator  
A coaxial cable isolator includes a stepped diameter tubular outer conductive element and a threaded smaller diameter inner conductive element coaxially aligned therewith to form an interruption....
4554486 Ignition transformer with passive voltage and current multiplying means  
A transformer (T) with a primary winding (L1) and a secondary winding (L) coupled to the primary winding. A capacitive element (C) is coupled to the secondary winding for providing an increased...
4551694 Coupling arrangement for a cavity resonator  
A coupling arrangement for a cavity resonator (10), in particular for measuring the magnetic resonance of a sample (17) located within the cavity resonator (10) comprises a loop (14) for supplying...
4546334 Electrical filter device  
An improved electrical filter device in which cut-off spaces required in a casing of the electrical filter device are still further reduced than in conventional arrangements, and which is free...
4543549 Multiple channel rotary joint  
A modular matrixed cylindrical rotary joint for transferring channeled electromagnetic energy from the stationary part of a radar system to its rotatable portion and an inner modular stator which...
4496814 Microwave excitation system  
A microwave excitation system for coupling microwave energy from a magnetron to a load via a waveguide of relatively compact dimensions open at one end for radiating energy therefrom and enclosed...
4425663 Low input capacitance data network transceiver  
A data communications transceiver for transmitting signals to and from a medium has an output driver connected to the medium through a series connected first pair of diodes and a receiving...
4422054 Distributed inductive-capacitive high voltage ignition cable  
A high voltage distributed inductance-capacitance cable (10) for an electrical ignition system of a fuel burning engine having an electrically conductive electrode (13) elongated along the length...
4389594 Device for electronically tuning a power magnetron  
The anode cavity of a power magnetron is connected through a coupling slot to a reactively terminated waveguide structure containing one or more selectively magnetizable ferrite elements acting as...
4383243 Powerline carrier control installation  
A powerline carrier control installation includes a control transmitter with an audio frequency output voltage, an isolation transformer, a coupling capacitor for parallel coupling to an a-c...
4370630 Isolating connector  
An isolating connector is disclosed for isolating the center conductor of a shielded cable from DC and low frequency AC potentials. The connector includes a generally tubular shell which is...
4339668 Monolithically integrated circuit of high dielectric strength for electrically coupling isolated circuits  
A system is disclosed for coupling electrically isolated circuits in a monolithic integrated circuit. A signal coupler is integrated on a chip together with a primary circuit and a secondary...
4327334 Multi-channel rotary joint for electromagnetic detection equipment  
A multi-channel rotary joint, designed to couple a stationary and a rotary component of a radar system to each other, comprises a main channel centered on the axis of rotation and a plurality of...
4302705 Capacitive coupling device for an electron tube  
A coupling electrode is placed within the vacuum envelope of an electron tube of coaxial geometry which is insulated from the anode of the tube by means of an insulator. The insulator is joined to...
4277764 Microwave transistor stabilization circuit  
A microwave transistor circuit includes a pair of field effect transistors connected in cascade via a standard 50 ohm transmission line having a length equal to one-half the wavelength of the...
4266162 Electromagnetic discharge apparatus with double-ended power coupling  
An electromagnetic discharge apparatus has a power coupling fixture which couples power to both ends of an electrodeless discharge vessel and produces a substantially uniform arc. Power can be...
4266166 Compact fluorescent light source having metallized electrodes  
Light source wherein high frequency power is capacitively coupled to a low pressure discharge includes at least one metallized power coupling conductor. A discharge lamp includes an envelope which...
4266167 Compact fluorescent light source and method of excitation thereof  
Method an apparatus for general illumination wherein high frequency power is capacitively coupled to a low pressure discharge. A discharge lamp includes an envelope which is typically pear-shaped...
4229714 RF Connector assembly with provision for low frequency isolation and RFI reduction  
An RF coaxial connector assembly, having an inner and outer conductor, employs a washer-like capacitor fitted over the outer conductor for low frequency isolation and employs a transformer adapted...
4122416 Shielded, D.C. isolated RF connector assembly  
A shielded, floating ground RF input connector assembly is provided by a conductive enclosure having an aperture in one wall. A coaxial connector is mounted with both the inner and outer...
4090155 Transmission line for electromagnetic wave  
A transmission line is disclosed which comprises a conductive layer, a resistive semiconductor layer disposed on the conductive layer and a blocking electrode disposed on the resistive...
4080557 Battery operated circuits and A.C. charger means  
Rechargeable batteries powering an electric circuit which produces a signal at an output terminal in response to an input, are connected with the output terminal through a rectifier and a...
3996536 Metal-insulator-semiconductor device phase shifter  
A microwave signal phase shifter using a metal-insulator-semiconductor (MIS) device is provided. In one preferred embodiment, one end of the device is coupled to a port of a circulator and the...
3980976 Coaxial connector  
A coaxial connector for a coaxial conductor, such as an antenna feeder, which can isolate one device from another along the length of the conductor, such as an antenna from a television receiver...
3950676 Transmission line-communications equipment coupling unit having short-circuit and overvoltage protection  
A transmission line carries power cables and twin wire communication lines. The coupling unit consists of an elongated, oil filled insulating body having metal caps closing off its opposite ends....

Matches 101 - 150 out of 195 < 1 2 3 4 >