Matches 101 - 150 out of 597 < 1 2 3 4 5 6 7 8 9 10 11 12 >
Match Document Document Title
6246295 Planar radiation oscillator apparatus  
A planar radiating oscillator apparatus for micro- and milliwaves includes a pair of conductor patches disposed with their pointed portions in proximity and their far edges on opposite sides, a...
6242987 Oscillator structure having resonator disposed below oscillator circuit  
An oscillator structure includes at least one oscillator circuit and at least one resonator. The oscillator circuit is disposed on a support and the resonator is situated essentially within the...
6236279 Oscillator and communications device  
An oscillator wherein deviation in the position of a cap of a package is monitored when removing and replacing the cap to adjust the characteristics of the oscillator, and which has stable...
6222429 Dielectric resonator, dielectric notch filter, and dielectric filter with optimized resonator and cavity dimensions  
The dielectric notch filter of the invention includes: a transmission line for transmitting a high-frequency signal; input and output terminals provided at both ends of the transmission line; a...
6208214 Multifunction high frequency integrated circuit structure  
A multifunction high frequency integrated circuit structure and circuit configuration includes a resonator or oscillator circuit coupled to a buffer amplifier by way of a stripline coupler. The...
6201449 Ferromagnetic tuning ring for YIG oscillators  
A YIG oscillator is provided having a YIG sphere magnetically coupled to a permanent magnet, a field straightener, and a ferromagnetic ring. The field straightener is attached to the permanent...
6188295 Frequency adjustments by patterning micro-strips to form serially connected capacitors or inductor-capacitor (LC) Circuit  
The present invention discloses an electronic device formed by interconnecting a plurality of circuit elements. The electronic device includes a first patterned conductive layer constituting...
6172578 Oscillation circuit suitable for upper heterodyne receiver  
Feedback capacitors and first inductance means which constructs a parallel resonance circuit together with the feedback capacitors are provided, the first inductance means is comprised of second...
6172577 Oscillator and oscillation apparatus using the oscillator  
A small-sized oscillator which readily oscillates and an oscillation apparatus using same are described. In the oscillator, an oscillation transistor, such as a silicon bipolar transistor, is...
6172572 Dielectric resonator, dielectric filter, dielectric duplexer, and oscillator  
6169467 Dielectric resonator comprising a dielectric resonator disk having a hole  
A TE 0 γδ mode dielectric resonator (12) includes a cylindrical dielectric disk (32, 32', 32") having top and bottom ends (20, 22) spaced apart by a closed curve wall (24). The dielectric disk...
6157269 Local oscillator noise rejection circuit  
A local oscillator noise rejection circuit is described which has a resistance between the output of an MES FET/HEMT and ground. This resistance has the effect of introducing a self-biasing...
6144263 Voltage-controlled oscillator and method for adjusting frequency shift amount thereof  
A voltage-controlled oscillator and a method capable of precisely adjusting a frequency shift amount are provided irrespective of a fluctuation in characteristics of elements such as a strip-line....
6144264 High Q-factor oscillator circuit  
A millimeter-wave/microwave oscillator circuit and method of fabricating same are disclosed. A high Q-factor resonator is formed by disposing a transferred electron negative resistance device, such...
6137375 Loss control loop circuit for controlling the output voltage of a voltage-controlled oscillator  
A circuit for controlling the loss of a VCO in a master-slave tuning system includes an envelope detector, an amplitude regulator, a current-mode circuit, and a low-pass filter. The envelope...
6133798 Oscillation system  
In plural oscillation systems each of which can be described by the van der Pol equation, each oscillation system is reciprocally connected with at least one oscillation system other than the own...
6133795 Oscillator circuit  
A stabilised voltage controlled oscillator circuit comprises a closed loop circuit containing a voltage controlled oscillator (34), a local oscillator (40) and a harmonic mixer (38) that mixes a...
6124767 RF/Microwave oscillator  
An RF/Microwave oscillator is disclosed that has the high-Q, low-loss, and phase noise performance of a DRO, without the need of a dielectric resonator to achieve such performance. The RF/Microwave...
6114918 Low phase-noise device comprising a microstrip-mounted coaxial dielectric resonator and method of reducing the phase noise in such a device, in particular in a voltage-controlled oscillator  
A low phase-noise device, like e.g. a microstrip-mounted voltage-controlled oscillator (VCO) is described, and also a method of reducing such a noise in such devices or other devices comprising a...
6111472 Quasi-optical amplifier  
A launch quasi-optical amplifier including a photonic bandgap crystal, designed to operate within a specific frequency range. The photonic bandgap crystal is populated with active devices that are...
6107892 Method for reduction of phase noise in microwave voltage-controlled oscillators  
Phase noise in an RF oscillator is significantly reduced by loosely couping another quieter RF oscillator having noise patterns uncorrelated to the first RF oscillator so that it frequency locks...
6104255 Voltage controlled oscillator with a resonator common to a resonance circuit and an oscillation circuit and a capacitor  
A voltage controlled oscillation circuit includes a resonance circuit and an oscillation circuit. The oscillation circuit includes a capacitor, a variable capacitance diode, and a resonator...
6091309 Tunable low noise oscillator using delay lines and ring mode trap filter  
An oscillator comprises an active device with a phase shift of less than 180 degrees. A first delay line has first and second ends. The first end of the first delay line is coupled to an active...
6081168 Voltage controlled oscillator for upconverter/downconverter in digital radio communication system  
A voltage controlled oscillator for upconverter/downconverter in a digital radio communication system has an improved phase noise characteristic and includes: a resonance unit wherein a variable...
6078223 Discriminator stabilized superconductor/ferroelectric thin film local oscillator  
A tunable local oscillator (10) with a tunable circuit (12) that includes a resonator (16) and a transistor (14) as an active element for oscillation. Tuning of the circuit (12) is achieved with an...
6057741 Radio frequency oscillator having capacitively coupled variable reactance device  
A radio frequency oscillator having: a resonant circuit; a gain element coupled in feedback relationship with the resonant circuit; and a variable reactance device, such as a varactor diode,...
6018274 Radio receiver and frequency generator for use with digital signal processing circuitry  
The present invention relates to a radio receiver, particularly to a receiver for use in single-frequency applications, such as GPS, and to a frequency generator, which may be used in such a radio...
6016082 Low phase noise LC oscillator for microprocessor clock distribution  
A microprocessor includes an on-chip low phase noise CMOS LC capacitance oscillator. The LC oscillator is relatively insensitive to power supply fluctuations. In addition, the LC oscillator is...
6016090 Dielectric resonator apparatus and high-frequency module  
A dielectric substrate is provided on both its main surfaces with conductors each having two circular openings such that the openings on both main surfaces oppose each other. On one conductor of...
6011446 RF/microwave oscillator having frequency-adjustable DC bias circuit  
A frequency-adjustable direct current biasing circuit is disclosed for providing a DC bias voltage or a DC connection to ground for an RF or microwave circuit without substantially affecting the RF...
6005450 Microwave oscillator having at least one adjustment pin  
A microwave oscillator includes a waveguide that is short-circuited on one side and a diode arranged therein, which receives its supply voltage by way of a coupling pin passed through a waveguide...
5990752 Method for mechanically tuning a voltage controlled oscillator  
A method (100) for mechanically tuning a VCO that has a resonant stripline having vias in predetermined locations connected through a circuit board to ground. This includes a step (104) of...
5973575 Fully monolithic voltage controlled oscillator with wide tuning range  
A voltage controlled oscillator for wide tuning range of frequency with less phase noise has a bipolar transistor provided with a positive feedback circuit between a base and an emitter of the...
5969578 Waveguide oscillator having planar slotted guide structure  
A waveguide oscillator by means of which carrier waves can be generated in a waveguide. The waveguide oscillator takes the form of a planar slotted guide structure arranged in the waveguide...
5959503 Voltage controlled oscillator tuning by metal lid aperture selection  
A method (100) for tuning a voltage controlled oscillator by changing electrical circuit parasitics includes a first step (102) of providing a voltage controlled oscillator circuit on a circuit...
5949293 Integrated circuit for measuring the distance  
An integrated circuit for measuring the distance houses an oscillator in a package. Further, a plane inductor is provided on the surface of the package housing the oscillator. The plane inductor is...
5909160 Temperature compensated sapphire resonator for ultrastable oscillator operating at temperatures near 77° Kelvin  
A sapphire resonator for an ultrastable oscillator capable of substantial performance improvements over the best available crystal quartz oscillators in a compact cryogenic package is based on a...
5894248 Controlled loop gain YIG tuned oscillator circuit  
A YIG oscillator circuit including a closed loop control system which maximizes loop gain during start-up and minimizes loop gain after start-up to minimize gain compression. In one embodiment the...
5870005 Frequency modulated oscillator for transmitting short range signals  
A broadcast transmitter for generating low power modulated signals, especially for a wireless speaker system. A signal source such as a source of composite audio signals including left and right...
5867069 Orthogonally mounted substrate based resonators  
A resonator includes a substrate to which are attached trimmable capacitance and inductance portions which together with a varactor and transistor form an oscillator circuit. The substrate mounts...
5854577 Variable frequency JFET microwave oscillator with variable impedance bias  
A variable frequency microwave oscillator comprises an oscillation FET of a junction type, a fixed impedance block connected to the source of the oscillation FET for determining the drain impedance...
5852388 Voltage controlled oscillator and sensitivity adjustment  
A voltage controlled oscillator including a resonator which generates an oscillation signal, a frequency of which is in response to a control signal, and an amplifier which amplifies the...
5841322 Phase detector using carrier suppression and oscillator using the phase detector  
A phase detector responsive to a first signal having a carrier frequency and a second signal close to the carrier frequency, including a carrier suppression circuit which produces a carrier...
5831487 Oscillator circuit  
An oscillator circuit includes a resonant circuit having a capacitor and an inductor. The inductor has two main terminals, a center tap and two further taps disposed symmetrically relative to the...
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...
5805026 Microstripline resonator useable in a voltage controlled oscillator and method for making same  
A microstripline resonator in which a desirable resonant frequency can be adjusted with less deterioration in Q and less production process steps is characterized in that a hollowed-out portion is...
5801591 Microwave linear oscillator/amplifier utilizing a multicoupled ferrite resonator  
A multi-octave ferrite oscillator topology that utilizes transformer coupling to provide the proper phase shift in the feedback loop. In a specific embodiment, a 10 mil YIG sphere is loosely...
5748051 Low phase noise UHF and microwave oscillator  
An oscillator circuit is described which exhibits low phase noise characteristics and has special application in UHF and microwave technologies. The oscillator circuit of the invention includes a...
5726608 Trimmable multi-terminal capacitor for a voltage controlled oscillator  
The invention provides a trimmable multi-terminal capacitor. The multi-terminal capacitor comprises a plurality of capacitors with each of the capacitors having a common terminal. The capacitors...
5717400 High-frequency signal generator and radar module  
A radar module includes a high-frequency signal generator comprising upper and lower parallel conductive plates, at least one dielectric rod held between the parallel conductive plates, a metal...
Matches 101 - 150 out of 597 < 1 2 3 4 5 6 7 8 9 10 11 12 >