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8838175 Signal transmission channel  
A signal transmission channel using a SIW between a transmitter and distant receiver. The SIW may include a MSL/SIW interface, be flexible, may use plug connections and/or may operate in a MMW band.
8688155 Synchronization methods for single-frequency simulcast mobile radio communication networks  
What is described is a circuit arrangement and a method for synchronizing the communication signals between a repeater station (S) of a single-frequency simulcast radio communication network (N)...
8548416 Semiconductor chip and radio frequency circuit  
A two-terminal semiconductor device is formed on a semiconductor substrate. Two wiring patterns are respectively connected to terminals of the semiconductor device, and two electrode pads are...
8170522 Multi-transformer architecture for an active RF circuit  
A circuit features a balun having an unbalanced input and a balanced output, and a differential coupler having a symmetrical structure about a center axis. The differential coupler has a...
8131246 High-frequency circuit having filtering function and reception device  
A high-frequency circuit includes a dielectric substrate, a stripline formed on a surface of the dielectric substrate, a ground conductor provided on a back surface of the dielectric substrate, in...
8131249 Frequency converter  
The present invention provides a frequency converter including a frequency conversion device capable of accommodating a Si-series MMIC and also a GaAs-series MMIC by using a magneto-resistance...
8014746 External request type function control system, terminal device, external request type function control method, and external request type function control program  
A function control information transmitter 30 transmits function control information 40 for controlling the function of a terminal device 10 such as a mobile telephone. When the terminal device...
8014373 Filtered antenna assembly  
An antenna assembly for a wireless communications device has an antenna, a filter circuit, and a connector constructed to engage a wireless communications device. A filter circuit includes a...
7904051 External request type function control system, terminal device, external request type function control method, and external request type function control program  
A function control information transmitter 30 transmits function control information 40 for controlling the function of a terminal device 10 such as a mobile telephone. When the terminal device...
7903762 Multi-band TV tuner and method thereof  
A direct conversion multi-band TV tuner includes: a plurality of RF (radio frequency) paths for processing the RF signal and for generating a plurality of processed RF signals, respectively; and a...
7899432 Submillimeter wave heterodyne receiver  
In an embodiment, a submillimeter wave heterodyne receiver includes a finline ortho-mode transducer comprising thin tapered metallic fins deposited on a thin dielectric substrate to separate a...
7804375 Modulation circuit  
A modulation circuit is provided that generates an output signal obtained by modulating an input signal with a local signal and includes a local input section that receives the local signal and...
7613434 Multiplexer and wireless receiver  
A multiplexer includes: a first band-pass filter for a first channel, which is formed in a microstrip line on a dielectric substrate and has a first branching characteristic having a center...
7512394 Wideband up-conversion mixer  
An up-conversion mixer includes a first and a second hybrid couplers and a first and a second traveling-wave mixers is disclosed. The first hybrid coupler receives an input intermediate frequency...
7509112 Wideband image rejection mixer  
An image rejection mixer including a first and a second hybrid couplers and a first and a second traveling-wave mixers is disclosed. The first hybrid coupler divides an input radio frequency (RF)...
7302249 High dynamic range mixer apparatus and balun therefor  
A wide dynamic range mixer which has a high linearity passive balun fabricated on a Si substrate for receiving an input RF signal and an active balun for receiving a local oscillator signal. The...
7164903 Integrated N-way Wilkinson power divider/combiner  
An integrated N-way Wilkinson power divider is described. In one embodiment, the N-way Wilkinson power divider uses a conductor layer with a cross-over (or cross-under) resistor insulated from the...
7149494 Demultiplexer and communication device  
A demultiplexer includes an antenna terminal, a reception filter connected to the antenna terminal, a transmission filter connected in parallel to the reception filter with respect to the antenna...
7035617 High power block upconverter  
A system and method for high power block upconversion having a stand-alone and surface-mountable component is provided. The HP-BUC system of the invention provides a “drop-in” component capable of...
7005726 Semiconductor device with an improved transmission line  
A semiconductor device with integrated circuits includes superimposed layers provided at different levels on a substrate, and including a metal strip (3) formed in a reference layer and through...
6993312 Double balanced diode mixer with high output third order intercept point  
A double balanced mixer consisting of an RF balun, a local oscillator balun and a diode “quad” bridge circuit connected between the two baluns and where the IF output is taken at the center tap of...
6970688 Local oscillator signal divider and low-noise converter employing the same  
A rat race circuit has an annular transmission line formed on a microstrip dielectric substrate. A terminal for port 1 is formed at any given position of the annular transmission line. Respective...
6931246 Line coupling structure, mixer, and receiving/transmitting apparatus comprised of suspended line and dielectric waveguide  
A line coupling structure for coupling a dielectric waveguide to a suspended line has the dielectric waveguide including dielectric strips and two conductor plates that are approximately parallel...
6901249 Complementary bipolar harmonic mixer  
A 3-terminal harmonic mixer which solves the conversion gain, port impedance and isolation problems associated with known harmonic mixers. In particular, the 3-terminal harmonic mixer in...
6879220 Switchless combining of multi-carrier coherent and incoherent carriers  
The invention is a combiner and a method for selectively combining modulated signals. The combiner includes a first modulator (12) with a selective input which receives at least one input signal...
6850751 Non-reciprocal circuit device, method of manufacturing, and mobile communication apparatus using the same  
A non-reciprocal circuit device has a length, a width, and a thickness denoted respectively by L1, L2, and L3, and the overall dimensions of 2.5 mm
6850149 Network control method and apparatus for home appliance  
An apparatus and method for controlling a home appliance network is disclosed, in which a home server is established at low cost so that an external user can easily control the operation of home...
6826393 Mixer circuit having component for frequency conversion  
A mixer circuit according to the present invention includes a first differential transistor pair of two transistors, a second differential transistor pair of two transistors, an impedance element...
6810241 Microwave diode mixer  
A mixer having a diode quad, and which receives two RF signals at an RF input balun having primary and secondary windings. A resonant circuit arrangement includes at least a capacitor circuit...
6748207 Power distributing and synthesizing device and mobile communication equipment using same  
A power distributing and synthesizing device which comprises first to third signal terminals, first and second transmission lines and a resistor. The first signal terminal is provided at the...
6738611 Image rejection sub-harmonic frequency converter realized in microstrip, particularly adapted to be use in mobile communication equipments  
It is described an image rejection, sub-harmonic frequency converter, realized in microstrip, particularly adapted to be used in mobile communication equipment, The converter avails of two...
6703965 Motion detector  
The present motion detector unit effectively suppresses harmonic frequencies and is cost-effective to build. The motion detector unit includes a main casing which houses the main microwave circuit...
6687494 Low power radio telephone image reject mixer  
An image reject mixer for a low power battery operated radio telephone application. First and second doubly balance mixer circuits are connected to receive a differential radio frequency signal....
6675005 Printed single balanced downconverter mixer  
A single balanced downconverter includes an insulated substrate with a primary circuit and a secondary circuit, each consisting of an open annular foil element, located on opposite sides of the...
6597899 Image reject mixer circuit arrangements  
An image reject mixer arrangement 1 comprises a transconductor 2, first and second mixer cores 3 and 4, first and second phase shifters 5 and 6 and a summer or combiner 7. The mixer arrangement 1...
6510314 Mixer circuit with output stage for implementation on integrated circuit  
An output stage of a double balanced mixer having a first intermediate port and a second intermediate port includes an operational amplifier, an impedance and first and second current source...
6389274 Subharmonic frequency converter for applications to millimetric radio waves  
A frequency converter that includes a first low-pass filter and a band-pass filter with a first end operatively connected to a first end of the first low-pass filter. The frequency converter also...
6373345 Modulator structure for a transmitter and a mobile station  
A modulator having a high signal-to-noise ratio. The modulator comprises a switching arrangement and a driver arrangement coupled to the switching arrangement, said driver arrangement comprising...
6275689 Double-balanced mixer  
The double-balanced mixer includes a diode ring (D1, D2, D3, D4) with respective balancing circuit portions for a local oscillator signal (LO) and a high frequency signal (RF) and a...
6263198 Multi-layer printed wiring board having integrated broadside microwave coupled baluns  
A microwave broadside coupled balun integral in a multi-layer printed wiring board formed by broadside coupled conductors embedded in the multi-layer printed wiring board. The balun may be used to...
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...
6198912 Frequency converter for the application on millimetric radio waves  
The following description regards a frequency converter (1) for applications on millimetric radio waves. The circuit structure comprises a diplexer filter realized in thin film on an alumina layer...
6163686 Signal selecting circuit  
A signal selecting circuit comprises a first switch means connected between a first input terminal and a common output terminal, a second switch means connected between a second input terminal and...
6115594 Frequency converter used in a microwave system  
A frequency converter for a microwave system includes: a balun having a slot line connected in a parallel T-junction with a first microstrip line for receiving a radio frequency signal; first and...
6094570 Double-balanced monolithic microwave integrated circuit mixer  
A double-balanced monolithic microwave integrated circuit mixer is fabricated on a GaHs substrate with a radio frequency microstrip balun formed thereon and a local oscillator microstrip balun...
6072824 Circuit arrangement for reducing intermodulation in a bandpass filter system  
A circuit arrangement that reduces selected intermodulation. The circuit arrangement includes a signal amplifier coupled to a bandpass filter via an electrical path. Signal energy outside the...
6072999 Receiving apparatus  
A receiving apparatus is presented, in which a channel frequency can be selected over a wide band with an increased attenuation at an image frequency and/or at a local oscillation frequency by...
6041224 DBS tuner for satellite broadcasting receivers  
A DBS tuner for satellite broadcasting receivers, includes an attenuating filter (trap circuitry) composed of a microstrip line having an open-ended load terminal which projects from the RF signal...
6029059 Quadrature mixer method and apparatus  
A quadrature mixer architecture that mixes the in-phase and quadrature phases within the same cell. The input voltage is applied to the base of a voltage conversion transistor, which converts the...
6026286 RF amplifier, RF mixer and RF receiver  
A low voltage silicon bipolar RF (radio frequency) receiver front end includes a low noise preamplifier and double-balanced mixer. The receiver incorporates monolithic microstrip transformers for...
Matches 1 - 50 out of 239 1 2 3 4 5 >