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7538628 |
Harmonic oscillator using transmission line resonator
A harmonic oscillator comprises a transmission line resonator in which an oscillation frequency depends on an electrical length of a transmission line and both ends of the transmission line are...
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7365612 |
Low noise, hybrid tuned wideband voltage controlled oscillator
An oscillator comprising an active device having first, second and third terminals, a plurality of micro-stripline resonators coupled together to form a coupled-resonator network, the...
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7248128 |
Reference oscillator frequency stabilization
Method for stabilizing the frequency of a MEMS (Micro Electro Mechanical Systems) reference oscillator, and a MEMS reference oscillator, wherein the method comprises following steps: using two or...
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7145405 |
Planar high frequency oscillator
A planar harmonic high frequency oscillator comprises a pair of amplifiers for oscillation, a micro-strip line for connecting between inputs of the pair of amplifiers and between outputs of the...
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7145404 |
Injection locked high frequency oscillator
A push-push high frequency oscillator comprises a pair of amplifiers for oscillation, a loop-shaped microstrip line for connecting inputs of the pair of amplifiers to each other and connecting...
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7088189 |
Integrated low noise microwave wideband push-push VCO
In one aspect, a voltage controlled oscillator is provided that includes circuitry comprising tunable coupled resonator networks, which are coupled to a terminal of a pair of three-terminal devices...
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6717480 |
Multielement oscillator employing higher mode planar resonator
A multielement oscillator employing a higher mode planar resonator being provided with the planar resonator and a plurality of oscillating elements. The planar resonator has a substrate, a...
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6232843 |
Plural coupled microwave oscillators providing phase shifted output signals
A signal generator for producing a plurality of signals having the same frequency but a constant phase difference includes first and second cavity oscillators coupled to each other via an...
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6147563 |
Coupled cavity oscillator producing output signals with a constant phase difference
An improved method and system for generating quadrature phase shift keying signals for use in data transmission is provided. A pair of oscillators are slaved to the transmit frequency and produce...
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5808517 |
PTM signal generator combining outputs of multiple oscillators
A high frequency pulse-time modulation (PTM) signal generator employs four or more high frequency oscillators which are mutually locked uniquely either in a symmetric mode or an antisymmetric mode...
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5450041 |
Quasi-optical oscillator using ring-resonator feedback
A high-power oscillator which uses a quasi-optical ring resonator to prov the feedback required for oscillation allows energy to travel in one direction only within the resonator and suffers little...
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5432482 |
Variable-frequency microwave oscillator with multi-resonator matching circuit
An injection-locked variable-frequency high-power microwave frequency generator includes an injection source, a circulator, and an oscillator. The circulator includes an injection port to the...
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5317286 |
Power combining oscillator
An array of unit oscillators interconnected with one another in that the transistors of the oscillators are connected to common lines. Separate lines in proximity provide coupling capacitance for...
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5229728 |
Integrated waveguide combiner
A microwave power combiner includes a first plate having disposed in a first surface thereof a first plurality of grooves and a second plate having disposed in a first surface of said second plate...
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5027086 |
Dielectric resonator oscillator power combiner
A microwave oscillator/power combiner incorporates two microstrip transmission lines, each coupled electromagnetically to an output transmission line. Each of the microstrip transmission lines...
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4763085 |
Mutually injection locked millimeter wave voltage controlled oscillators with power combiner
Disclosed is a circuit for power combining electromagnetic energy in the millimicrowave frequency band where the electromagnetic energy is produced by two substantially identical varactor tuned...
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4742314 |
Solid state millimeter wave power combiner
A plurality of millimeter wave power sources are arranged in a planar mat array located in a wave-beam resonator including two reflecting surfaces which are large in terms of the operating...
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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...
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4656438 |
Power combining cavity
A method and arrangement for enhancing the level of supplied microwave energy including a resonant ring capacitively coupled to a microwave coupling device effective for connecting to a microwave...
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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...
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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...
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4588963 |
Microwave power combiner with alternating diode modules
A solid state microwave power combiner is disclosed having a central combining cavity with a plurality of coaxial oscillator circuits disposed about and coupled to the cavity. The oscillator...
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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...
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4571555 |
Re-entrant coaxial cavity power combiner
A plurality of negative resistance devices is spaced below a cylindrical center conductor of a single coaxial cavity. Each negative resistance device has a bias device connected to it by a bias...
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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)...
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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...
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4514696 |
Numerically controlled oscillator
A radio frequency numerically controlled oscillator comprising N one bit adders each providing sum and carry outputs to one of N two bit registers. Sum, carry and frequency selection inputs are...
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4496913 |
Millimeter wave power combiner using concave reflectors
A mm wavelength power combiner comprising an open resonator comprising a r of confronting concave reflectors which can be either spherical or parabolic. The resonator dimensions are many times the...
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4494087 |
Combiner probe providing power flatness and wide locking bandwidth
A distributed inductive reactance is coupled to a terminating impedance at the interface of a combiner probe with a resonant cavity. The distributed reactance is implemented by a metal insert...
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4480233 |
Planar multiple oscillator circuit
At least two oscillators (20) are power combined using planar transmission lines, e.g., microstrip, stripline, or suspended substrate. A portion (42) of each oscillator (20) is preferably...
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4471325 |
Power combiner with reentrant coaxial diode oscillators
An improved combiner of microwave power out of a plurality of coaxial diode oscillators is shown to be made up of a circular cylindrical cavity dimensioned to operate in the TM 020 mode at a...
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4470021 |
Power combiner for coaxial diode oscillators
A power combiner using a circularly cylindrical cavity, dimensioned to support the TM 020 mode, to combine the power from coaxial diode oscillators is shown to comprise: (a) a first plurality of...
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4453139 |
Frequency offset multiple cavity power combiner
A combiner for power combining electromagnetic energy is disclosed. At least two electromagnetic cavities are positioned having intercavity coupling among all cavities: each cavity is tangent to...
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4359700 |
Balancing network for microwave power combiner
The diode bias input terminals of an IMPATT microwave power combiner are resistively coupled to a common floating node to provide stabilization of the operating points of the individual IMPATT...
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4340870 |
Efficient higher order mode resonant combiner
An efficient higher order mode resonant combiner in which a higher order mode accumulator cavity is adjusted to have the real part of its input characteristic impedance to be so minimized as to be...
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4327339 |
Solid state microwave source and radio equipment incorporating such a source
A solid state microwave source placed within a rectangular waveguide, whose one end is short-circuited. The microwave source incorporates a negative resistance diode system placed on the inner...
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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...
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4309672 |
Negative resistance oscillator/amplifier accumulator circuit
A microwave oscillator/amplifier includes a plurality of TEM transmission lines each with a negative resistance device at one end and a lossy, matched termination at the other end. A resonant...
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4291279 |
Microwave combiner assembly
A microwave combiner assembly is described incorporating a coaxial transmission line having a plurality of diodes exhibiting negative resistance at high frequency mounted between the center...
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4249149 |
Ultra high-frequency circuit with resonant cavity equipped with pairs of peripheral diodes
A circuit capable of providing the negative resistance heart of oscillators or amplifiers in the 5-20 Gc/s frequency band, comprising a central resonant cavity and one or several peripheral...
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4189684 |
Microwave power combiner
A microwave power combiner is shown to consist of a plurality of coaxial diode oscillators disposed on the periphery of a circularly cylindrical cavity operating in the TM 020 mode, such cavity...
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4185252 |
Microstrip open ring resonator oscillators
A microstrip circuit which features a pair of open ring resonators sections adapted to oscillate independently in their even mode. In a preferred form, the ring resonator sections are each driven...
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4176295 |
High peak power microwave generator using light activated switches
A high peak power microwave generator is disclosed in which a plurality of transmission lines are connected to an output wave guide at predetermined intervals along the direction of propagation....
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4175257 |
Modular microwave power combiner
A modular microwave power combiner having a plurality of identical microwave diode amplifier circuits grouped in sets within the body of a modular unit which are electrically coupled in parallel to...
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4162458 |
TM coaxial cavity oscillator and power combiner
In an oscillator or power combiner of the type operating at microwave, millimeter wave and above, apparatus for increasing the size, so that one or more active devices can be coupled to the...
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4130810 |
Solid state power combiner
An improved solid state transmitter (and elements therefor) adapted particularly well to pulsed operation at radio frequencies is disclosed. Such transmitter includes the combination of: A...
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4121174 |
Adjustable microwave power combiner for plurality of coaxial circuits
A power combining device for combining the microwave power from a plurality of solid state devices comprises a housing defining a resonator cavity with a plurality of co-axial microwave circuits,...
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4083016 |
Coupled-cavity microwave oscillator
An oscillator for very high microwave or millimeterwave frequencies employs a pair of negative-resistance semiconductive devices, each mounted in its own resonant cavity. The two cavities are...
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4075578 |
Accumulating cavity microwave oscillator
An accumulating cavity microwave oscillator having a plurality of coaxial circuit mounted negative resistance diodes coupled to the cavity wherein the plurality of coaxial circuits may be mounted...
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4066979 |
Negative resistance microwave circuit comprising one or more pairs of diodes
A circuit for microwave oscillators or amplifiers, yielding the maximum microwave power from negative resistance diodes feeding into one and the same waveguide section. Diodes are arranged in pairs...
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