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Document Title |
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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. |
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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)... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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)... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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.... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |
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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... |