Login| Sign Up| Help| Contact|

Patent Searching and Data


Matches 601 - 650 out of 11,694

Document Document Title
WO/2003/056654A1
A filter circuit includes a filter element (4) which is a parallel resonance circuit having a pair of first resonance lines (19a, 19b) formed by the thick film formation technique and a pair of second resonance lines (20a, 20b) formed by...  
WO/2003/055065A1
A coupler (10) having a first line (1) and a second line (2) also comprises a resonant structure (3) including a capacitor (5) and an inductor (4). The coupler (10) thus delivers a coupling signal S31 that is substantially frequency inde...  
WO/2003/055091A1
Provided is a system and method for reducing the effects of antenna coupling by increasing the isolation between closely mounted antennas on a portable wireless communications device. Increased isolation is achieved by providing a cerami...  
WO/2003/052862A1
On an upper surface of a substrate (1), conduction paths (2a, 2b, 2c) circularly extend greater than just one circle and constitute ring units of oscillation in such a manner that the two ends of each conduction path (2a, 2b, 2c) are adj...  
WO/2003/041173A1
The invention relates to a high-frequency oscillator for an integrated semiconductor circuit and to the use thereof. The high-frequency oscillator (30) is part of the semiconductor circuit (10) (SOI wafer) comprising a first silicon laye...  
WO/2003/041215A1
The invention relates to a micromechanical resonator comprising a contactable resonance body and to a method for producing a micromechanical resonator for semiconductor components. According to the invention, the resonator (26) is compri...  
WO/2003/041117A2
The invention relates to an integrated semiconductor component for conducting high-frequency measurements and to the use thereof. According to the invention, the semiconductor component is part of a semiconductor circuit (10) (SOI wafer)...  
WO1999036982A3
The present invention provides improved tunable filters (1) which include improved tuning mechanisms (7-16) and may include two opposed ceramic pucks (2, 3).  
WO/2003/038942A1
A method for tuning a cavity filter (200) is provided. The cavity filter includes a plurality of tuning members (120). The method includes selecting a stored set of positional values for the tuning members (120), driving the tuning membe...  
WO2002058183A9
A resonator of a planar circuit type is provided for receiving a signal from an input end and transmitting a signal to an output end. The resonator includes: (a) a dielectric substrate; (b) a ground plane including a layer of conductive ...  
WO2002084778A3
The present invention provides a phase shifting filter and a phase compensating direct downconversion receiver. A DC offset detector detects a DC offset in a received baseband signal and provides a feedback signal. A tunable filter phase...  
WO2001099223A3
A method of making a low-loss electromagnetic wave resonator structure. The method includes providing a resonator structure, the resonator structure including a confining device and a surrounding medium. The resonator structure supportin...  
WO/2003/019715A1
The present invention relates to a tunable resonating arrangement comprising a resonator apparatus (10), input/output coupling (4) means for coupling electromagnetic energy into/out of the resonator apparatus, and a tuning device (3) for...  
WO/2003/016236A1
A first inventive microwave dielectric composition comprises a ceramic composition represented by AnR4Ti3&plus nO12&plus 3n, where A is an alkaline earth metal element, R is a rare earth element and characterized in that a case satisfyin...  
WO/2003/012986A1
A tunable resonator (100) is provided. The resonator includes a housing having a cavity (103). A resonator body (104) is disposed adjacent to a first surface (105) within the cavity. A gap (116) is formed between the resonator body and t...  
WO2002062104A3
An instrument is disclosed fro microwave-assisted chemical processes that avoids tuning discrepancies that otherwise result based upon the materials being heated. The instrument includes a source of microwave radiation, a waveguide in co...  
WO/2003/010849A1
A uniform-field resonator includes a central cavity section having a cross-section which is set to the cutoff frequency for a particular microwave propagation mode and a pair of end sections which enclose the cavity to form a resonator i...  
WO2002071531A3
A filter and a method of making a filter to remove unwanted frequency harmonics associated with current filters. The filter is made up of resonators (#1, #2, #3) such that the filter resonates a design frequency. Whereby, at least two re...  
WO/2003/007417A1
A configuration for coupling a dielectric resonator to a microstrip transmission line that maintains a relatively high Q value of the dielectric resonator. The dielectric resonator-to microstrip transmission line coupling configuration i...  
WO/2003/003502A1
The invention relates to a ring resonator (10) for use in microwave systems wherein orthogonal resonance modes are formed and geometrical characteristics influence at least one of the resonance modes. Said geometric characteristics inclu...  
WO/2002/101872A1
A resonator and filter including the resonator is disclosed. The resonator (100) includes an open conductive loop (100) with folded transmission line segments (124, 134) extending from the adjacent ends of the loop. Of each transmission ...  
WO/2002/099923A1
An electronic filter includes a first microstrip line hairpin resonator including first and second arms, a first varactor connected between a first end of the first arm and a first end of the second arm of the first microstrip line hairp...  
WO/2002/097963A2
High quality epitaxial layers of monocrystalline materials can be grown overlying monocrystalline substrates such as large silicon wafers by forming a compliant substrate for growing the monocrystalline layers. The compliant substrate in...  
WO2002084779A3
Tunable dielectric thin films are provided which possess low dielectric losses at microwave frequencies relative to conventional dielectric thin films. The thin films include a low dielectric loss substrate, a buffer layer, and a crystal...  
WO/2002/091409A2
The present invention relates to an electrically controllable/tunable microwave device (10) comprising a ferroelectric substrate (101) with a variable dielectric permittivity and conducting electrodes (102, 103A-C), arranged on said subs...  
WO/2002/087016A1
A family of FE dielectric-tuned antennas and a method for frequency tuning a wireless communications antenna are provided. The method comprises: forming a radiator (106); forming a dielectric with ferroelectric material proximate to the ...  
WO/2002/087082A1
The present invention provides for low loss tunable matching circuits at rf frequencies. Ferro-electric materials are used to produce low loss tunable capacitors and inductors for use in matching circuits.  
WO/2002/084858A1
A crystal oscillator having tunable ferroelectric components. A first ferroelectric capacitor is coupled to an automatic frequency control line for fine tuning the reference frequency. A second ferroelectric capacitor is coupled to tempe...  
WO/2002/084787A1
The invention relates to a method for adjusting a resonator in an oscillator, which is characterized in that a dielectric serving as a resonator in the oscillator is eroded in a targeted manner by laser pulses until a target frequency is...  
WO/2002/084857A1
A voltage controlled oscillator incorporating a ferroelectric capacitor in its resonant circuit is provided in order to provide superior phase noise performance and a linear control voltage/capacitance relationship. The resonant circuit ...  
WO/2002/084798A1
An inverted-F ferroelectric antenna is provided. The antenna comprises a counterpoise, or groundplane (102), and an inverted-F structure radiator (104) having a first end (106) connected to the counterpoise. A fixed dielectric material (...  
WO/2002/084778A2
The present invention provides a phase shifting filter and a phase compensating direct downconversion receiver. A DC offset detector detects a DC offset in a received baseband signal and provides a feedback signal. A tunable filter phase...  
WO/2002/084310A1
A tunable ferroelectric component (610-614) and a narrowband resonant circuit (610-620) for measuring the loss of the ferroelectric component. The ferroelectric component may be a capacitor integrated in the resonant circuit. The testing...  
WO/2002/084685A1
The present invention quantifies and reduces losses in tunable bandpass filters having ferro-electric capacitors. Given a required insertion loss and the quality factor of a resonator, the geometric losses resulting from a particular top...  
WO/2002/084779A2
Tunable dielectric thin films are provided which possess low dielectric losses at microwave frequencies relative to conventional dielectric thin films. The thin films include a low dielectric loss substrate, a buffer layer, and a crystal...  
WO/2002/084781A1
The present invention provides a tunable ferro-electric multiplexer for use in CDMA communication devices. Tunable ferro-electric capacitors are used to tune the resonant frequencies of several resonators used in a multiplexer and to tun...  
WO/2002/084780A1
An antenna coupling system for exciting a resonator composed of a resonant rod in a case and a coupled antenna. The antenna coupling system comprises a coupled antenna (13) having one end (19) connected to the supply terminal for supplyi...  
WO/2002/084686A1
A ferro-electric filter and method of tuning same. The filter includes a switch for switching between quarter wave resonator and half wave resonator modes. The filter also includes a ferro-electric component for tuning the resonant frequ...  
WO/2002/082580A1
Tuneable dielectric resonator structure in which piezoelectric materials are used to effect the tuning.  
WO/2002/071531A2
A filter and a method of making a filter to remove unwanted frequency harmonics associated with current filters. The filter is made up of resonators (#1, #2, #3) such that the filter resonates a design frequency. Whereby, at least two re...  
WO/2002/067369A1
The present invention relates to a non-radiative dielectric oscillator using a cavity oscillator. According to the present invention, cavity-rear reflect plates, screws and Gunn diodes are located at certain heights and with certain dist...  
WO/2002/062104A2
An instrument is disclosed fro microwave-assisted chemical processes that avoids tuning discrepancies that otherwise result based upon the materials being heated. The instrument includes a source of microwave radiation, a waveguide in co...  
WO/2002/058185A1
A high frequency circuit element comprising a dielectric member (1), a shielding conductor (2) surrounding the dielectric member (1), support member (3) for fixing/supporting the dielectric member (1), and a pair of transmission lines (4...  
WO/2002/058183A1
A resonator of a planar circuit type is provided for receiving a signal from an input end and transmitting a signal to an output end. The resonator includes: (a) a dielectric substrate; (b) a ground plane including a layer of conductive ...  
WO2002019468A3
An antenna that includes a housing having a plurality of walls forming an enclosure, a slot formed in a first wall of the housing, and, a folded cavity formed in a second wall of the housing opposite the first wall. The folded cavity is ...  
WO2001084572A3
This invention provides tunable devices incorporating the dielectric CaCu3Ti4O12. CaCu3Ti4O12 is especially useful in tunable devices such as phase shifters, matching networks, oscillators, filters, resonators, and antennas comprising in...  
WO/2002/049145A1
The invention relates to an arrangement with adjustable capacitance, comprising an electrical conductor (10) and a ferro-electrical material (12) with a variable dielectric constant $g(e), whereby the capacitance may be adjusted by means...  
WO/2002/041343A1
An electronic component-use substrate and an electronic component being higher in relative permittivity than conventional materials, free from reduction in strength, small in size, higher in performance and excellent in general electric ...  
WO/2002/039535A1
A dielectric resonator is provided. The dielectric resonator includes a rod having first and second ends and an exterior surface that extends between the first and second ends. The resonator also includes a base, coupled to the first end...  
WO/2002/036519A1
An object of the present invention is to provide a dielectric ceramic composition for microwave usehaving a relative permittivity &egr r of 35 to 45, Qf¿0? value of more than 50,000 GHz (at 7 GHz), and dielectric characteristic of $g(t)...  

Matches 601 - 650 out of 11,694