Wave transmission lines and networks inventions 03/08

20080068110 - Symmetrized coupler converting circular waveguide tm01 mode to rectangular waveguide te10 mode: A coupler for converting rf power traveling in the TM01 mode in a circular waveguide to the TE10 mode in a rectangular waveguide. The circular waveguide has an extension comprising an evanescent tube through the coupler allowing the propagation of a particle beam but disallowing the propagation of rf wave... Agent: Dr. David U.l. Yu Duly Research Inc.

20080068113 - Filter circuit: There is provided with a filter circuit including: an input terminal configured to input an input signal; first to ith blocks which have first to ith resonators as transmission lines having first to ith resonance frequencies; a power divider configured to distribute the input signal to the first to ith... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080068109 - Transceiver circuit: A transceiver circuit includes a duplexer having a transmit band for transmit signals and a receive band for receive signals, and an antenna circuit electrically connected to the duplexer. The antenna circuit is configured to generate at least one stop band in a frequency range in which noise signals are... Agent: Fish & Richardson PC

20080068111 - Re-entrant resonant cavities, filters including such cavities and method of manufacture: The end 11 of the stub 6 defines a gap 12. A rostrum 14 faces the end of the stub 6. The rostrum 14 is manufactured separately and then fixed to the substrate 9. A dielectric sphere 16 is located between the end 11 of the probe 6 and the... Agent: Lucent Technologies Inc. Docket Administrator - Room 3j-219

20080068112 - Rod-loaded radiofrequency cavities and couplers: This invention relates to radiofrequency (rf) cavities and couplers that comprise metallic or dielectric rods to provide specified concentration of field patterns for the operating modes in the interaction region, for applications in particle accelerators, pulsed rf power sources, amplifiers, mode converters and power couplers.... Agent: Dr. David U.l. Yu Duly Research Inc

20080061900 - Signal transmission circuit and method thereof: A signal transmission circuit and method thereof are provided. The signal transmission circuit may include a plurality of signal transmission lines, each of the plurality of signal transmission lines configured to transfer data via signal currents and a reference transmission plane configured to transfer return currents corresponding to the signal... Agent: Harness, Dickey & Pierce, P.L.C

20080061901 - Apparatus and method for switching between matching impedances: An apparatus and method for switching between matching impedances is described. One illustrative embodiment matches a first predetermined value of a dynamically varying load impedance to a predetermined source impedance and causes a phase shift between the source and the load that permits a second predetermined value of the dynamically... Agent: Neugeboren Law Firm PC

20080061902 - Method and apparatus for impedance matching in transmission circuits using tantalum nitride resistor devices: A method for trimming impedance matching devices in high-speed circuits includes determining an electrical parameter associated with a first tantalum nitride (TaN) resistor used as an impedance matching device in the circuit under test, and comparing the determined electrical parameter associated with the first TaN resistor to a desired design... Agent: Cantor Colburn LLP-ibm Burlington

20080061903 - Directional couplers for rf power detection: Very small size true directional couplers have a coupling coefficient that is independent on load VSWR. The coupler uses coupled inductors with a compensation circuit including a resistor and a capacitor, or just a capacitor. Wideband operation is suitable for many portable applications such as power detection and control for... Agent: Stmicroelectronics, Inc.

20080061904 - Signal splitter: A signal splitter includes a low-pass filter circuit for permitting a low-frequency component of an incoming signal in an incoming telephone line coupled to a first connecting port to pass therethrough to a second connecting port, and a coupling circuit including a capacitor coupled between a first terminal of the... Agent: Gallagher & Lathrop, A Professional Corporation

20080061905 - High-frequency dielectric ceramic composition, dielectric resonator, dielectric filter, dielectric duplexer, and communication apparatus: The high-frequency dielectric ceramic composition contains 100 parts by weight of main component and 0.005-0.300 parts by weight (on a B2O3 basis) of accessory boron compound. The main component has a composition formula of (1−y)xCaTiaO1+2a−(1−y)(1−x)Ca(M1z/3M22/3)bO1+2b-yLnAlcO(3+3c)/2, wherein x and y denote moles , and x, y, z, a, b, c, and... Agent: Dickstein Shapiro LLP

20080061906 - Saw duplexer: A SAW duplexer includes a first SAW filter having a passband with a relatively low frequency, and a second SAW filter having a passband with a relatively high frequency. The first and second SAW filters each have a ladder-shaped circuit configuration. A bridging inductor is connected in parallel to at... Agent: Murata Manufacturing Company, Ltd. C/o Keating & Bennett, LLP

20080061907 - Resonator, apparatus having the same and fabrication method of resonator: A resonator includes a substrate, and a resonating unit formed on the substrate, and having a lower electrode, a piezoelectric film, and an upper electrode. The lower electrode is formed of at least two layers to adjust a piezoelectric coupling coefficient. The lower electrode includes a first electrode layer and... Agent: Sughrue Mion, PLLC

20080061908 - Coaxial connector and method for manufacturing the same, and superconductor device and method for manufacturing the same: The coaxial connector 10 to be connected with a coaxial cable has a surface covering layer 20 formed of a metal material which causes an eutectic reaction with In on the surface of a terminal 12 which is a core conductor. Because of the surface covering layer 20 of a... Agent: Kratz, Quintos & Hanson, LLP

20080061909 - Variable resonator, variable bandwidth filter, and electric circuit device: A variable resonator includes a ring-shaped conductor line (2) which is provided on a dielectric substrate (5) and has a circumferential length of a wavelength at a resonance frequency or an integral multiple of the wavelength, and at least two circuit switches (31, 32), wherein the circuit switches (31, 32)... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20080061910 - Split-ring coupler incorporting dual resonant sensors: A split ring coupler having a stator ring having at least one split in it such that the stator has at least a first and a second end and a rotor ring having at least one split in it such that the rotor ring has at least a first and... Agent: Keusey, Tutunjian & Bitetto, P.C.

20080055015 - Compact impedance transformation circuit: The present invention relates to an impedance transformation circuit (I10; 11 a; 11 b; 12) with a first contact pad (51) and a second contact pad (52) being spaced-apart and formed on a substrate (20). The impedance transformation circuit comprises at least first circuit element (40) providing a contact area... Agent: Nxp, B.v. Nxp Intellectual Property Department

20080055016 - Tunable impedance matching networks and tunable diplexer matching systems: Tunable impedance matching networks and tunable diplexer matching systems are provided. A tunable impedance matching network can include an impedance element connected between first and second nodes for communicating signals between the first and second nodes. For example, the impedance element can be a transmission line or an inductor. Further,... Agent: Jenkins, Wilson, Taylor & Hunt, P. A.

20080055017 - Hybrid low pass diplex filter: A hybrid diplex bandstop filter includes a lowpass filter circuit which passes a first range of frequencies and a highpass filter circuit passes a third range of frequencies. The filter blocks a second range of frequencies. The third range of frequencies is higher than the second range and the first... Agent: Pastel Law Firm

20080055018 - Semiconductor device with decoupling capacitance controlled and control method for the same: In a semiconductor device, a monitoring circuit monitors and detects a quantity of noise in the semiconductor device. A control circuit has capacitances and controls connections to the capacitances such a decoupling capacitance value provided between a first power supply and a second power supply is dynamically adjusted based on... Agent: Sughrue Mion, PLLC

20080055019 - Multilayer filter: A multilayer filter has a capacitor element body, at least two signal terminal electrodes, and at least one grounding terminal electrode. The capacitor element body has a plurality of laminated insulator layers, a first signal internal electrode and a grounding internal electrode arranged to be opposed to each other with... Agent: Oliff & Berridge, PLC

20080055020 - Acoustic resonator: An acoustic resonator is described, the acoustic resonator comprising a stack of a first and a second piezoelectric body, wherein said first and second piezoelectric bodies have substantially the same spatial piezoelectric orientation, an intermediate intermediate electrode being arranged between said first and said second piezoelectric body forming a first... Agent: Maginot, Moore & Beck Chase Tower

20080055021 - Acoustic wave device, filter and duplexer: An acoustic wave device includes a first resonator having a piezoelectric substance sandwiched between a pair of electrodes in a direction of an c-axis orientation or a polarization axis, and a second resonator that is connected in series and has another piezoelectric substance sandwiched another pair of electrodes so that... Agent: Arent Fox LLP

20080055022 - Integrated saw device heater: An integrated SAW device features an electronic assembly, a SAW device mounted to the electronic assembly, and a heater element on the SAW device to minimize thermal resistance between the SAW device and the heater element.... Agent: Iandiorio & Teska

20080055023 - Tuneable resonator: The invention discloses a tuneable resonator (100, 200, 300, 500, 600, 700, 900) with a substrate layer (140, 260, 360, 560, 660, 960), which substrate layer supports a structure with a first electrode (130, 240, 350, 550, 650). In connection to the first electrode there is arranged a layer (120,... Agent: Ericsson Inc.