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7603097 |
Vehicle radar sensor assembly
A radar electronics module includes a support structure having a first surface having a plurality of recesses with a transmitter circuit board and a receiver circuit board disposed thereon. The...
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7398072 |
Mobile wireless communications device with reduced microphone noise from radio frequency communications circuitry
A mobile wireless communications device includes a housing and circuit board in the housing and having radio frequency (RF) circuitry and a power amplifier and microphone mounted thereon. An...
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7376408 |
Reduction of near field electro-magnetic scattering using high impedance metallization terminations
The present invention uses metallization termination techniques to reduce the electro-magnetic field scattering at the edges of metallized areas. The metallization termination techniques provide a...
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7366472 |
Technology for creating a RF radiation-free environment
The invention relates to a method of rendering telecommunication devices ineffective, by creating a substantially radio frequency radiation-free environment by providing an interference generating...
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7363017 |
High frequency module and manufacturing method thereof
A high frequency module used as a unit circuit making up a phased array antenna, in which the module may be reduced in size with reduction in cost. A high frequency module 10 includes a...
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7359693 |
Enclosure and substrate structure for a tuner module
A tuner module comprising a tuner and a tuner enclosure. The tuner includes a substrate containing filter coils and the tuner enclosure includes at least one partition plate placed between filter...
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7349724 |
Radio frequency arrangement and production method and also use
A radio frequency arrangement includes a first semiconductor body having on a first side a radio frequency connection location for emitting therefrom or for supplying thereto a radio frequency...
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7327996 |
High sensitivity radio receiver
The invention relates to a high sensitivity receiver installed outdoors which may be used in a base station of a mobile communication system, for example. A received radio frequency signal is...
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7289167 |
Television tuner including distribution connectors
A metal frame body has first to fourth side plates and is divided, by a shield plate provided in the metal frame body, into a first compartment area near the first side plate and a second...
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7268836 |
Television tuner device generating intermediate-frequency signal free from harmonic interference of reference signal
A television tuner device includes a metal frame, including a shielding plate which separates the space defined by the metal frame into a first chamber at a first side plate and a second chamber at...
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7245896 |
Apparatus for improving reception sensitivity of public wave receiver by reducing noise externally-emitted in the public wave receiver
An apparatus for improving reception sensitivity of a public wave receiver includes power devices formed in a power supply of the public wave receiver, and a shielding plate for shielding noise...
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7228120 |
Circuit and method for reducing direct current biases
A method is provided for reducing a DC bias in a receiver. This method includes isolating a second circuit portion from a first circuit portion ( 535 ) and determining a second DC bias correction...
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7224953 |
Receiving device and television receiver
A receiving device in which the shielding performance is improved to solve a pulling problem in a receiving device of a direct conversion system is provided. The receiving device includes: a...
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7129994 |
Television tuner having level of harmonics of oscillation signal suppressed low
The level of the harmonics of oscillation signals for synchronous detection to be inputted to a mixer circuit for converting frequencies is suppressed low. A first integrated circuit component...
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7107034 |
High frequency and low noise interconnect system
Methods and apparatus are provided for an interconnect system for coupling radio frequency signals from one component to another in a RF system. The interconnect system acts as a coaxial...
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7099683 |
Method for controlling the signal level from terminals to a node in a network in point to multi-point radio-communication systems having time division multiple access
A received signal level is controlled in a node used in a point to multi-point (PmP) radio-communication system having microwave time division multiple access (TDMA). Local node control is...
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7076230 |
Radio frequency apparatus
A radio frequency apparatus comprising a printed circuit board mounting an electronic component including a coil as an inductance element, a metal frame body covering this printed circuit board and...
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7072623 |
Radio terminal device
An enclosure part in the vicinity of a receiver part or an enclosure part to which a user brings its head close during a call is formed out of a nonconductive material of resin or the like, and an...
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7035599 |
Biased phase sweep transmit diversity
Disclosed is a method and apparatus of transmit diversity that is backward compatible and does not significantly degrade performance in additive white guassan noise (AWGN) conditions using a...
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6996387 |
Global data network using existing wireless infrastructures
A system of data servers, organizing software and applications enable mobile users communicating through advanced wireless handheld devices to access a wide array of information on the Internet and...
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6957051 |
Apparatus for local reduction of electromagnetic field using an active shield and method thereof
An apparatus and method for shielding an operator from electromagnetic fields emitted from an antenna in a portable communication device. A plurality of active shields are placed between the...
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6952559 |
Digital radio ad enhancements
A digital radio stores advertisements for substitution during a broadcast for a bumpable advertisement within the broadcast. Upon detecting a bumpable advertisement within a predetermined broadcast...
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6920314 |
Symmetric sweep phase sweep transmit diversity
Described herein is a method and apparatus for transmission that provides the performance of space time spreading (STS) or orthogonal transmit diversity (OTD) and the backwards compatibility of...
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6839571 |
RF shielding design for wireless high-speed internet access system
An improvement in the shielding design and deployment of collocated radio transceivers for high-speed wireless Internet access accomplished by increased isolation brought about by wrapping each...
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6804504 |
Audio processing system
The instant invention provides a digital audio processing system that includes a mainframe chassis, a central processor card, a plurality of analog input cards, and a plurality of analog output...
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6785519 |
Portable telephone
The portable telephone capable of more effectively reducing the electromagnetic energy to be radiated therefrom and absorbed by the human body during its use is provided. The portable telephone is...
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6785512 |
Radio frequency radiation-free environments
The invention relates to a method of rendering telecommunication devices ineffective by creating a substantially radio frequency radiation-free environment. An interference generating pattern is...
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6765626 |
Digital television signal receiving unit with simplified structure and lowered influence to unit generated noise
The cost of a receiving unit is reduced by simplifying its structure and the receiving unit structure further reduces the unit from being influenced by noises and the like generated by the main...
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6708047 |
Device for reducing radiation from an antenna of a portable telephone
A device for reducing radiation from an antenna of a portable telephone, includes a main body having an outer body with a central bore, and an antenna gripping member mounted in the bore and having...
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6564038 |
Method and apparatus for suppressing interference using active shielding techniques
A method and apparatus are disclosed for suppressing interference in a radio frequency (RF) communication system using active shielding techniques. An opposing neutralizing signal is applied to...
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6522872 |
Up/Down tuner
An up-converter section and a down-converter section are contained in separate respective chassis. The up-converter section and the down-converter section are linked by an IF link section having a...
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6501945 |
Cellular phone with an insulating envelope for preventing leakage of electromagnetic radiation
The present invention provides a cellular phone comprising: a housing having front and rear casings wherein the rear casing comprises a metallic layer coated on an inner side of the rear casing for...
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6445475 |
Method for practically loading transmission or receiving module for optical link and its rigid flexible board
A method for practically loading a small-sized and compact transmission or receiving module for an optical link in which interference between a receiving circuit and a transmission circuit can be...
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6308056 |
Double super tuner
A double super tuner for receiving television signals from conventional broadcast, CATV, satellite broadcast, and HDTV. A first frequency converter converts an input high-frequency signal in a...
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6304458 |
RF shielded LCD assembly and PCB assembly including the same
A light guide/shield assembly for use with a circuit board includes an upstanding, electrically conductive shield wall adapted to be mounted on and electrically grounded to the circuit board. The...
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6160571 |
Compact cable tuner/transceiver
A CATV transceiver is provided within an RF shield enclosure. The transceiver circuit includes a diplexer, having fixed value inductors, that is coupleable to a CATV cable plant to receive an RF...
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6131023 |
Cable modem tuner with an up-stream and a reception circuit in the same casing
A cable modem tuner includes, in the same casing, an up-stream circuit to transmit an up-stream data signal to a CATV station, and a reception circuit for receiving a down-stream signal via a HPF...
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6047172 |
Transceiver assembly with an electromagnetic shield
A carrier and shield arrangement, where the transceiver of a circuit board is exchangeable through the front panel of a station in the computer network. The shield physically connects to the...
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6031494 |
Handy-phone with shielded high and low frequency circuits and planar antenna
An improved, compact, lightweight handy-phone provided with a built-in directional planar antenna is provided. The planar antenna is mounted on a portion of a high-frequency printed wiring board,...
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5974095 |
Digital satellite broadcasting receiver
A tuner part of a digital satellite broadcasting receiver includes an IF signal demodulator part and an I/Q signal demodulator part. These demodulator parts are formed on different substrates, and...
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5884197 |
Wireless portable transceiver arranged for providing isolation between radio frequency and audio signals
Cross-over modulation between radio frequency circuits and audio circuits is minimized in a wireless portable transceiver by locating all audio circuitry in a first section of the portable...
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5794159 |
Dual band mobile station employing cross-connected transmitter and receiver circuits
A multi-mode radiotelephone (10) includes at least one antenna (12) for transmitting and receiving RF signals within at least two frequency bands. The radiotelephone also includes a first receiver...
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5740527 |
Transceiver
The invention provides a transceiver in which a mutual interference between the transmitting and receiving circuits can be suppressed, without a shielding plate therebetween. The transceiver...
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5710999 |
Radio frequency apparatus
A radio frequency apparatus has a tuner unit which is disposed in a tuner unit housing, and a demodulation unit which is disposed in a demodulation unit housing easily attached or removed to the...
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5671220 |
Satellite channel interface in indoor unit used for satellite data communication
A satellite channel interface (SCI) is constituted by an analog section having a multiplexer unit and a down converter unit, and a digital section constituted by a modulator-demodulator unit. The...
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5581217 |
Microwave shielding structures comprising parallel-plate waveguide
Shielding structures are provided for microwave circuits with substrate members and shield members which are formed from conventional substrates. The shield members are shaped and joined to the...
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5535034 |
Optical transceiver unit
An optical transceiver unit capable of preventing any crosstalk from an optical transmitter to an optical receiver to thereby avert reduction of the reception sensitivity. The optical transceiver...
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5475876 |
Tuner unit having electromagnetically isolated UHF and VHF section with no noise
In a tuner unit including an antenna input filter section, a UHF section, a VHF section, and a PLL section which are electromagnetically separated by walls, an inductor for a VHF local oscillator...
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5457817 |
Tuner of a double superheterodyne receiver
A first PLL 15 circuit connected to a first local oscillator 4 and a second PLL circuit 18 connected to a second local oscillator 10 are disposed in a same casing 20, and it is therefore not...
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5355532 |
Television tuner unit having shield housing
The present invention relates to a television tuner capable of receiving television broadcasting, CATV and satellite broadcasting. The television tuner includes a double superheterodyne tuner for...
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