Matches 251 - 300 out of 597 < 1 2 3 4 5 6 7 8 9 10 11 12 >
Match Document Document Title
4736168 Dielectric resonator controlled oscillator having a raised frequency multiplying efficiency  
In a dielectric resonator controlled oscillator with frequency multiplication, a line (12) has an open end and another end connected to a gate electrode of an FET (11) with a dielectric resonator...
4733198 Mechanically tunable sealed microwave oscillator  
A microwave oscillator has a sealed, dielectric case that encloses a dielectric resonator adjacent a circuit conductor. Discrete conductive elements are removably mounted to the exterior of the...
4728907 Frequency/temperature compensated millimeter wave oscillator  
Frequency/temperature compensation of millimeter wave lumped active element oscillators is disclosed by use of a simple capacitive compensating element, and including printed circuit versions in...
4727338 Hyperfrequency oscillator operating in the millimetric band  
The invention concerns a negative resistance hyperfrequency oscillator, operating in the millimetric band, comprising a waveguide delimited on one side by an iris and a useful load and on the other...
4724403 Microwave oscillator  
A microwave oscillator of the type in which a dielectric resonator is disposed inside a conductive housing, characterized in that a conductive rod-like member is disposed inside the housing and...
4710729 Microwave oscillator comprising a dielectric resonator insensitive to mechanical vibrations  
A microwave oscillator (11) stabilized by a dielectric resonator (12) constituted by a housing (13) accommodating the dielectric resonator circuit and haing a fixing surface (14) and by a support...
4694262 Oscillator with resonator having a switched capacitor for frequency changing  
An oscillation circuit comprises a resonator and frequency switching means for switching oscillating frequencies of the resonator, said frequency switching means including a capacitor and an...
4692714 Single resonator push-push oscillator  
A microwave frequency oscillator utilizing a push-push configuration to provide a low noise highly stable output signal at twice the frequency of a single resonator. The single resonator is...
4689583 Dual diode module with heat sink, for use in a cavity power combiner  
A composite diode module is provided having an impedance matching member integrally formed within the module. The module includes a base member, a heat sink holder member having an aperture, a gold...
4686499 Police radar warning receiver with cantilevered PC board structure  
A compact police radar warning receiver is provided having an antenna in which some of the mixer and oscillator components are secured to the antenna by a cantilever structure formed integral the...
4673894 Oscillator coupled through cylindrical cavity for generating low noise microwaves  
A microwave oscillator having very low phase noise characteristics has a reflection oscillator circuit coupled to a right-circular cylindrical resonant cavity designed to operate in the TE 011 ...
4656394 Particle accelerator with frequency correction  
A particle accelerator with frequency correction is provided in which an electromagnetic wave, supplied by a generator, is injected into a cavity through a wave guide. A frequency corrector device...
4652836 Integrated microwave oscillator with microstrip resonator frequency stabilizer  
An integrated microwave oscillator as which the generated frequency is stabilized by a dielectric resonator with high quality factor and stability. The positive feedback is assured not only by the...
4642571 Microwave pulse source  
A superconducting cavity has a long time constant when the coupling factor of its output port is low so as to accumulate input microwave energy therein, and after a certain accumulation of the...
4642578 Push-pull radio frequency circuit with integral transistion to waveguide output  
A radio frequency circuit for ICRF heating includes a resonant push-pull circuit, a double ridged rectangular waveguide, and a coupling transition which joins the waveguide to the resonant circuit....
4642577 Injection-locked waveguide oscillator  
An injection-locked waveguide oscillator comprises a first diode (3) having a free-running fundamental frequency above the local cut-off frequency of the waveguide (1) and a second diode (4) having...
4639690 Tunable, dielectric-resonator-stabilized oscillator and method of tuning same  
A dielectric-resonator-stabilized, Gallium-Arsenide-FET, negative resistance oscillator operating in the microwave region incorporating an improved form of dielectric resonator whose resonant...
4636751 Coaxial cavity Gunn oscillator using probe coupled microstrip  
A millimeter wave microstrip transmission line is coupled to a solid state echanically tunable cylindrical resonating coaxial cavity millimeter-wave oscillator by means of a probe extending...
4630002 Very high frequency oscillator with gyromagnetic resonators  
A very high frequency oscillator (4-22 GHz) including field effect transistor and first and second YIG sphere resonators whose reactant frequencies are displaced, which gives the oscillator a wide...
4628283 Hermetically sealed oscillator with dielectric resonator tuned through dielectric window by adjusting screw  
Microwave dielectric resonator apparatus which, for example, may be a microwave oscillator frequency stabilized by a dielectric resonator or may be a microwave filter whose critical frequency is...
4626800 YIG thin film tuned MIC oscillator  
A tuned oscillator is disclosed which comprises an active element, a resonator electrically connected to the active element and made of a magnetic material using ferro-magnetic resonance...
4618836 Wide band dielectric resonator oscillator having temperature compensation  
A improved microwave dielectric oscillator module which is provided with a removable temperature compensated dielectric resonator channel element is described. The removable temperature compensated...
4617531 Directly modulated microwave oscillator having adjustable load coupling  
A directly modulated microwave source for use in communications equipment is disclosed. The arrangement, fabricated in an open ended waveguide comprises an oscillator section operating in the TE...
4613832 Fluid filled microwave cavity oscillator for a discontinuity detector system  
A microwave cavity oscillator comprises a waveguide blocked at both ends, an active device enclosed in the waveguide and a dielectric powder or other fluid filling the remaining space in the...
4609883 Microwave oscillator hermetically sealed and coupled to dielectric resonator  
The interior of a metal housing is divided by a dielectric substrate into two compartments. At least one of the compartments is kept air-tight. The substrate carries thereon a semiconductor active...
4605909 Dual gate FET oscillator mixer  
An oscillator-mixer arrangement including a dual-gate field effect transistor of the Schottky type for supplying an intermediate frequency output signal. The output signal is obtained by...
4604587 Tunable magnetron with internal tuning motor  
A rotatable tuning body is driven by a positioning motor such as a stepper motor, for varying the tuning frequency of a magnetron. The motor rotor is situated within the evacuated space of the...
4600894 Planar radial resonator oscillator/amplifier  
An apparatus and method is disclosed for providing a planar disc resonator oscillator/amplifier which consists of a planar radial disc resonator, a substrate having a hole extending therethrough, a...
4591806 Dielectric resonator stabilized oscillator and method for optimizing the operating characteristics thereof  
A dielectric resonator stabilized oscillator structure and method for adjusting the oscillating characteristics of the oscillator which includes mounting the dielectric resonator to a cover housing...
4590441 Filter reflection image guide oscillator and solid state line scanning device  
A filter reflection image guide oscillator and a line scanning device. The device includes a brass metal heat sink base on which a dielectric waveguide is mounted. A resonant cavity is defined in...
4588966 Image line voltage controlled oscillator with replaceable components  
A millimeter wavelength oscillator combining a mechanically tunable resonating cavity oscillator element with an electronically tunable solid state diode element provides a basic stable steady wave...
4588967 Integrated varactor tuned coaxial gun oscillator for 60 GHz operation  
An electronic varactor tuner is integrally combined with a mechanically tuned Gunn oscillator to provide an increased tuning range in a light weight, compact, rugged combination with easily and...
4588964 Hermetically sealed microwave solid-state oscillator with dielectric resonator tuned by electromagnetically coupled terminating admittance  
A microwave solid-state oscillator includes a casing hermetically enclosing a microwave oscillation device and a dielectric resonator electromagnetically coupled with the microwave oscillation...
4583055 Spatial power combiner  
The spatial power combiner disclosed here is used to efficiently combine the power sources, which incorporate two-terminal negative resistance devices, in a coherent manner such that a high power...
4583058 Broadband power combiner  
A power combiner circuit for combining a plurality of signals to provide output power to a load over a broad range of operating frequencies includes a resonant cavity and a plurality of negative...
4583057 Microwave oscillator  
A box-shaped metal microwave oscillator is provided having two pairs of substantially parallel, confronting inner surfaces, the second pair perpendicular to the first pair to define an oscillator...
4581591 Integrated circuit tunable cavity oscillator  
An integrated circuit tunable cavity oscillator for extremely high freque operation in image line waveguide. The oscillator includes a metal base with a cylindrical bore, a dielectric or...
4581594 Drive circuit for YIG tuned devices  
A stable, low noise voltage-to-current converter is provided to control the tuning current in YIG tuned devices such as YIG tuned transistor oscillators. The circuit provides stable tuning current...
4580108 Tunable waveguide oscillator  
An oscillator formed in a rectangular waveguide (1) with both mechanical and electronic tuning comprises an oscillator device (4) spaced from a movable short-circuit termination (2) with a varactor...
4573025 Drift-equalized, multi-frequency oscillator  
An oscillator having the ability to oscillate at a plurality of discrete frequencies in response to an applied digital signal is disclosed. A crystal-controlled, resonant circuit utilizing passive...
4571557 Wide band transistor oscillator  
An oscillator includes two transistors or like devices having their emitters connected to a common of a power source. The two transistors or like devices are interconnected with the base of the...
4568890 Microwave oscillator injection locked at its fundamental frequency for producing a harmonic frequency output  
A microwave oscillator suitable for millimeter wavelengths comprises a Gunn diode (3) coupled to a waveguide (1) by a resonant-cap structure (5,6). The diode (3) generates microwave energy both at...
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)...
4567449 Low noise oscillator operating in the ultra-high frequency range  
The invention relates to an ultra-high frequency oscillator (11-14 GHz) having a plurality of transistors, stabilized on at least one of their electrodes by a microstrip line coupled to a...
4565979 Double dielectric resonator stabilized oscillator  
A double dielectric resonator (1) having lower and upper preferably cylindrical dielectric elements (3, 5, respectively) is used to stabilize an oscillator operating at microwave frequencies. The...
4560952 Cavity-stabilized microwave oscillator  
A stabilized microwave oscillator having a selected operating frequency range, composed of a rectangular waveguide dimensioned to have a cutoff frequency above the selected operating frequency...
4556852 Mounting a semiconductor device in a microwave cavity oscillator  
A microwave cavity oscillator has a semiconductor device, for example a transistor for exciting the cavity to oscillate. The device is mounted upon a substrate which is itself mounted, conveniently...
4555678 Microwave oscillator  
An improvement in a microwave oscillator using a GaAs FET as the active element is shown to include a phase detector responsive to a portion of the positive feedback signals applied to a resonator...
4542352 Cavity oscillator with undesired mode absorbing waveguides for linear FM  
A modulated elongate cavity oscillator with minimized modulation nonlinearities includes a first cavity having dimensions which determine the fundamental resonant frequency of the oscillator, a...
4540955 Dual mode cavity stabilized oscillator  
A stable electromagnetic oscillator (30) comprises an amplifying element (3) in feedback association with a dual mode resonant cavity (12) that provides a double pole bandpass filter function. Two...
Matches 251 - 300 out of 597 < 1 2 3 4 5 6 7 8 9 10 11 12 >