Matches 351 - 400 out of 459 < 1 2 3 4 5 6 7 8 9 10 >
Match Document Document Title
4673958 Monolithic microwave diodes  
Two-terminal active devices, such as IMPATT and Gunn diodes, are combined with passive devices in a monolithic form using a plated metal heat sink to support the active elements and a coated-on...
4672341 Sampling circuit for microwave signals  
A sampling circuit for microwave signals includes a substrate (S), a planar microwave guide (PL) on one side of the substrate and a conductive surface on the other. A slotline is formed by a...
4642584 Slot-line switching and limiting device for operation at microwave frequencies  
A slot-line for a microwave device in which is mounted at least one diode connected in parallel between two metallic strips of the slot. At high frequencies (18 to 200 GHz), the inductance L of the...
4626883 Textured crystal picosecond photoresponsive element  
Picosecond response photoconductors and photoresponsive elements can be provided that retain high carrier mobility and yet have short lifetime by providing on a crystal mismatched substrate a...
4617528 Compact combiner for use with semiconductor devices in the microwave frequency range  
A metallic support supports a number of semi-conductor devices surrounded by an annular dielectric substrate which in turn supports a circuit including at least two microstrip lines and a metallic...
4617586 High-frequency circuit comprising an integrated capacitor  
A high-frequency circuit (11) having at least a semiconductor circuit element (12) which is arranged on a first surface (13) of an insulating substrate (14). At least one (19a, 19b) of the output...
4612566 Microwave transistor mounting structure  
Disclosed is a microwave transistor mounting structure which comprises a chassis formed with raised portions, a substrate formed with a hole, and a microwave transistor, the raised portions of the...
4587541 Monolithic coplanar waveguide travelling wave transistor amplifier  
A microwave and millimeter wave amplifier consisting of a field effect travelling wave transistor monolithically integrated into a coplanar waveguide having input, output and matching sections is...
4575700 Parallel plate transmission lines integrated with coplanar waveguides or slot lines and method of making same  
A solid state integrated circuit type transmission line structure is formed by a semi-conductor substrate consisting of an active layer and a semi insulating layer of given conductivities and...
4568889 Distributed diode VCO with stripline coupled output and distributed variable capacitor control  
In a distributed IMPATT structure, power is coupled out through a side contact. That is, in previously proposed distributed IMPATT structures, the gain medium (the active region of the IMPATT)...
4538124 Planar microwave circuit component mounting system  
The plane of the leads of a field effect transistor are spaced from a transistor housing surface a distance which may have any value in a given range. The leads are soldered or welded to respective...
4535307 Microwave circuit device package  
A microwave circuit device package including a conductive housing and selectively interchangeable transmission line sections each one thereof being disposable in such housing and means for tuning...
4533886 Self-biasing broadband frequency divider  
A microwave frequency divider operable in 2-16 GHZ range over octave bandwidths. A circuit resonant at a subharmonic frequency is formed by a pair of input microstrip transmission lines coupled to...
4525732 Distributed IMPATT structure  
In a distributed IMPATT structure, power is coupled out through a side contact. That is, in previously proposed distributed IMPATT structures the gain medium (the active region of the IMPATT)...
4523163 Wideband microwave device generating even harmonics of an incident signal  
A wideband microwave device for generating even harmonics of an incident microwave signal. A co-planar-type input structure conducts an incident microwave signal with an asymmetrical propagation...
4523159 Microwave oscillator and single balanced mixer for satellite television receiver  
A microwave oscillator and a combination microwave oscillator/single balanced mixer for a satellite television receiver includes a cylindrical dielectric resonator located on one side of a ground...
4511860 Planar microwave oscillator mounted on a dielectric cavity  
A planar oscillator (9, 109) having a dielectric cavity (25, 125) and which is operative at microwave frequencies, said oscillator consisting of a dielectric material base (10, 110) one surface of...
4490694 Microwave switch wherein PIN diode is mounted orthogonal to microstrip substrate  
An improved microwave multi-throw switch incorporating PIN diodes wherein the PIN diodes are mounted orthogonally to the conductive stripline.
4485488 Microwave subharmonic mixer device  
A wide band microwave subharmonic mixer includes a signal divider, first and second balanced varistor frequency converters, and a signal combining and dividing circuit. A local oscillator signal is...
4484163 Arrangement for biasing high-frequency active components  
An arrangement for applying a DC bias current to an RF active component, such as a field effect transistor, serially-connected with an RF transmission line. The biasing current is supplied by a...
4476446 Impedance matching network for field effect transistor  
An impedance matching network for coupling a microwave transmission line to a field effect transistor (FET). The impedance matching network includes a resistor coupled in shunt with the FET and an...
4465990 Microwave detector arrangement  
A microwave detector arrangement operable over a broad range of frequencies including the series resonant frequency of a detector diode (9) for detecting microwave energy in a transmission line of...
4460880 Circuit matching elements  
The invention provides circuit matching elements primarily for integrated circuits and particularly for monolithic microwave integrated circuits. A transmission line in accordance with the...
4458222 Waveguide to microstrip coupler wherein microstrip carries D.C. biased component  
An apparatus for coupling a waveguide structure to a printed circuit transmission line connected to a solid state device requiring a DC bias comprising: a hollow waveguide connector; a base mounted...
4431974 Easily tuned IMPATT diode module  
An improved microwave circuit is disclosed for enabling impedance tuning for power coupling in IMPATT diode and other similar oscillator and amplifier circuits. An electrically conductive support...
4430758 Suspended-substrate co-planar stripline mixer  
A coplanar strip line compensated balun coupled to a double balanced strip line mixer circuit where the strip lines of the balun have a predetermined radius of curvature and adjusted gap widths to...
4427991 High frequency semiconductor device  
A high frequency, hermetically-sealed, semiconductor device with the capability of being cascade-connected with corresponding devices in an advantageous manner. The device consists of a function...
4425549 Fin line circuit for detecting R.F. wave signals  
A fin line apparatus, within a rectangular waveguide, for detecting R.F. signals utilizes metallic film conductors, disposed on both surfaces of a planar dielectric centered in the waveguide...
4415867 Hybrid coupled microstrip amplifier  
A microstrip integrated circuit reflection amplifier utilizing packaged diodes and permitting some gain and bandwidth adjustment. A 3 db quadrature coupler has two of its ports connected to...
4413243 Optimized transmission line switch  
An optimized transmission line switch comprises a first high frequency diode and means for counteracting the capacitive component of the first diode. Unpackaged diode chips are utilized to avoid...
4393392 Hybrid transistor  
A transistor package having input, reference (ground) and output terminals includes a ceramic base metallized to provide a ground plane and an isolated collector pad; and also includes a transistor...
4387386 Microwave controlled field effect switching device  
A microwave switching device replacing PIN diodes and operating at higher eeds requires reduced switching current. A field effect controlled device is utilized with no ground plane, for elimination...
4380020 Active high frequency semiconductor device with integral waveguide  
An active semiconductor device, such as a Gunn effect device, capable of operation at extremely high frequencies, fabricated in situ on a substrate that also serves as a dielectric waveguide to...
4376287 Microwave power circuit with an active device mounted on a heat dissipating substrate  
A microwave power circuit includes a thermally conductive, electrically insulating substrate such as beryllium oxide which has a relatively rough surface, a layer of dielectric material such as...
4374394 Monolithic integrated circuit  
A monolithic integrated circuit comprises a substrate having first and second opposing major surfaces. A semiconductor device is at the first major surface, a circuit film pattern is on the second...
4371851 Receiver protector with multi-level STC attenuation  
A radar receiver protector having high isolation and low insertion losses due to a unique microwave assembly configuration is disclosed. The receiver protector includes at least one high power...
4361819 Passive semiconductor power limiter formed on flat structure lines, and an ultra-high frequency circuit using such a limiter  
The passive limiter is formed by at least two parallel micro-strip lines, a slot line orthogonal to the two micro-strip lines and a pair of diodes having the same polarity and placed on each edge...
4360865 Broad band microwave detector  
An improved broad band microwave detector of the type including a detector diode, a by-pass capacitor, and a resistive termination wherein fabrication using coplanar transmission line techniques...
4353047 (1-x)BaO.xTiO.sub.2 System dielectric material for use in a microwave device  
The present invention provides a dielectric material adapted for microwave integrated circuits (MIC) and an electric circuit making use of said dielectric material. More particularly, an oxide...
4348651 Cascading diode switches  
An N or N + type semiconductor substrate has a P-type layer diffused therein to form a PIN junction that is etched out between adjacent mesas and filled in with glass to form adjacent diodes...
4344047 Millimeter-wave power limiter  
Disclosed is a millimeter wave bulk effect RF power limiter consisting of a lanar PIN diode formed on a gallium arsenide (GaAs) substrate which also comprises the waveguide structure for RF energy...
4344052 Distributed array of Josephson devices with coherence  
Josephson devices are distributed in series in a transmission line structure in which electromagnetic waves are used to synchronize the dynamics of the Josephson devices in order to achieve...
4326180 Microwave backdiode microcircuits and method of making  
After a circuit is completely configured, including the mounting of semiconducting material onto a conductive layer and the connection of a conductor lead from a dot on the semiconducting material...
4323855 MIC Combiner using unmatched diodes  
In a microstrip circuit having dual diode driven, independently oscillati half-wave open ring resonating sections, partially coupled quarter-wave ring sections are provided to permit matching and...
4320536 Subharmonic pumped mixer circuit  
A subharmonic pumped mixer circuit utilizes quarter wavelength transmission lines at a local oscillator (LO) frequency to provide high radio frequency (RF) to local oscillator (LO) port isolation...
4301429 Microwave diode with high resistance layer  
A microwave diode having an integrally formed fixed resistance layer to provide a monolithic structure. The resistance layer has an approximate value of 50-ohms when the diode is in the forward...
4297722 Ceramic package for semiconductor devices having metalized lead patterns formed like a floating island  
A transistor device which is suitable for a high-frequency and high-power transistor is disclosed. The transistor device comprises a first ceramic plate and a second ceramic plate mounted on the...
4292643 High cut-off frequency planar Schottky diode having a plurality of finger-like projections arranged in parallel in a transmission line  
A planar Schottky diode is disclosed which is inserted into a transmission line without disruption of characteristic impedance. The diode comprises a plurality of parallel finger-like projections...
4276558 Hermetically sealed active microwave integrated circuit  
An active microwave amplifier element is hermetically sealed on the opposite side of a dielectric substrate from the side in which input and output signals are transmitted. The active element is...
4259743 Transmit/receive microwave circuit  
A microwave integrated circuit device for use in the transmitting and receiving portion of a Doppler speedometer utilizing microwaves. In order to keep the transmitting power low and the receiving...
Matches 351 - 400 out of 459 < 1 2 3 4 5 6 7 8 9 10 >