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7620364 |
Wireless transmission system and method for wirelessly transmitting data signals in a flight vehicle
Changing the seating configuration when there are wired connections to each seat is difficult. A wireless transmission system and method communicate wirelessly while also preventing interference...
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7613430 |
Dual synthesizer RF frequency plan optimized for interference avoidance
Using separate synthesizers in a radio frequency (RF) device can facilitate avoiding interference. Specifically, a first synthesizer can be programmed to generate a first output frequency signal...
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7596356 |
On-chip baseband-to-RF interface and applications thereof
An on-chip baseband-to-RF interface includes a receive/transmit section, a control section, and a clock section. The receive/transmit section, when in a receive mode, provides the stream of inbound...
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7593695 |
RF transceiver incorporating dual-use PLL frequency synthesizer
A dual-use PLL frequency synthesizer for use in a transceiver is capable of operating as a local oscillation generator in a receiving mode and as a transmitter in a transmitting mode. The PLL...
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7590387 |
High accuracy voltage controlled oscillator (VCO) center frequency calibration circuit
Methods and systems for calibrating a frequency of a circuit are disclosed herein and may comprise dividing a feedback frequency of an output frequency signal to generate a divided frequency...
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7587180 |
FM modulator
An FM modulator measuring an f-V characteristic of a voltage controlled oscillator in a reduced time period. In the FM modular a characteristic measurement time control section 110 notifies a...
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7583152 |
Phase-locked loop with self-correcting phase-to-digital transfer function
A phase-locked loop includes a phase-to-digital converter portion as well as a novel correction portion. The phase-to-digital converter (PDC) portion outputs a stream of first phase error words....
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7577404 |
High-frequency device, high-frequency module and communications device comprising them
A high-frequency module constituted by an integral laminate for handling a plurality of transmitting/receiving systems having different passbands comprises (a) a switch module part for branching...
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7576621 |
Film bulk acoustic resonator calibration
Film bulk acoustic resonators (FBARS) have resonant frequencies that vary with manufacturing variations, but tend to be matched when in proximity on an integrated circuit die. FBAR resonant...
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7574185 |
Method and apparatus for generating a phase-locked output signal
A method and apparatus for generating a phase-locked output signal includes generating an intermediate signal phase locked to an input signal by frequency dividing the intermediate signal by a...
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7570926 |
RF transceiver with compact stacker mixer design for multiple frequency conversion
A single chip radio transceiver includes circuitry that enables received wideband RF signals to be down-converted to baseband frequencies and baseband signals to be up-converted to wideband RF...
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7570925 |
Discrete amplitude calibration of oscillators in frequency synthesizers
In one embodiment, this disclosure describes a frequency synthesizer for use in a wireless communication device, or similar device that requires precision frequency synthesis but small amounts of...
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7570924 |
High frequency signal receiving device
A high frequency signal receiving device includes a reference frequency signal generating section operable to generate a reference frequency signal; a high frequency signal processing section...
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7560960 |
Frequency synthesizer using two phase locked loops
The application discloses system and method embodiments related to a frequency synthesizer. Embodiments of a frequency synthesizer can have a low phase noise and a narrow channel spacing....
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7558556 |
Adaptive radio transceiver with subsampling mixers
An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a...
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7542727 |
Method for receiving a signal on a single multi-band antenna
A system and method for providing a global positioning system (GPS:) enabled antenna system are provided. The GPS enabled antenna may be used, for example, on a wireless communications device such...
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7539473 |
Overshoot reduction in VCO calibration for serial link phase lock loop (PLL)
A circuit design, method, and system for tracking VCO calibration without requiring an over-designed divider as in conventional implementation. A filter reset component is added to the inputs of...
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7526250 |
Apparatus, system and method for flip modulation in an impulse radio communications system
Apparatuses, systems and methods for transmitting and receiving modulated impulse radio signals. An impulse radio receiver includes a time base, a precision timing generator, a template generator,...
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7519332 |
Radio-frequency radiocommunication apparatus
A radiocommunication apparatus includes a transmitting device and a receiving device. The transmitting device includes a first local oscillation section for selecting a frequency for a first local...
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7515880 |
Variable gain frequency multiplier
A variable gain frequency multiplier comprises a multiplier circuit and a control circuit configured to receive a power control signal, the power control signal being proportional to a power output...
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7508897 |
PLL circuit and high-frequency receiving device
A PLL circuit has (i) a counter which divides a frequency of a VCO output whose frequency has been divided by a frequency divider and (ii) a memory which stores plural patterns of set cycles of the...
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7505542 |
Low jitter digital frequency synthesizer with frequency modulation capabilities
A low jitter digital frequency synthesizer includes a first counter module, a second counter module, a snapshot module, an error value generation module, and a tapped delay line. The first counter...
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7502605 |
Sub-millimeter wavelength camera
The invention relates to an imaging device to be used with millimeter and/or sub-millimeter radiation comprising at least a pair of substrates, at least one of which is patterned on at least one...
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7502602 |
Method and apparatus to compensate loop error of phase locked loop
Briefly, according to embodiments of the invention, there is provided a method and an apparatus to compensate for a closed loop response error of a transfer function of a phase locked loop unit.
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7502595 |
Radio equipment communicatable in two frequency bands and method for generating local oscillator signal in radio equipment
Radio equipment enabling radio communication with frequency conversion corresponding to signals of different frequency bands is disclosed. A local oscillator signal generator included in this radio...
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7496331 |
Oscillation device and oscillation method
An oscillation device, includes: an oscillator circuit that generates an oscillation signal based on a direct current voltage to be inputted, the oscillation signal being provided with a...
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7483678 |
Single chip GSM/EDGE transceiver architecture with closed loop power control
A single chip GSM/EDGE transceiver comprises a fully differential receive chain, a subharmonic mixer in the receive chain, the subharmonic mixer configured to receive a radio frequency (RF) input...
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7480518 |
Mobile communication terminal and method of controlling signal-transmission power
A mobile communication terminal includes a de-spreader which de-spreads signals received from a base station, a RAKE-synthesizer which RAKE-synthesizes the de-spread signals, a SIR detector which...
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7477879 |
Transceiver system with common receiver and transmitter oscillator
A transceiver system including a common receiver and transmitter oscillator. The transceiver system may include transmitter circuitry, receiver circuitry, and a first oscillator. The first...
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7457617 |
CMOS wireless transceiver with programmable characteristics
A monolithic radio integrated circuit includes a substrate, a set of one or more analog subcircuits on the substrate, a programmable bias current supply on the substrate coupled to the set to...
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7447493 |
Tuner suitable for integration and method for tuning a radio frequency signal
A tuner ( 200 ) includes a direct digital frequency synthesizer ( 206 ) and a mixer ( 220 ). The direct digital frequency synthesizer ( 206 ) has an output terminal for providing a digital local...
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7444164 |
System and method for radios using common equipment packaging
A wireless communication system operating in a predetermined frequency range comprising a plurality of radios each having an enclosure configured to accept a common equipment assembly comprising a...
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7433653 |
Transmitter and semiconductor integrated circuit for communication
A transmitter adopting a polar loop system including a phase control loop for controlling the phase of a carrier signal outputted from a transmitting oscillator and an amplitude control loop for...
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7424280 |
Frequency synthesizer and frequency synthesis method
A dual frequency synthesizer includes a reference oscillator, an R counter, a first fractional-N phase-locked loop (for a receiving channel) and a second fractional-N phase-locked loop (for a...
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7424271 |
Multi-mode and multi-band RF transceiver and related communications method
A multimode communications system includes a first communications module, a transmission module, a switch and a second communications module. The first communication module has a frequency...
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7415247 |
Method and arrangement for transmitting and receiving RF signals through various radio interfaces of communication systems
A method and an arrangement for transmitting and receiving RF signals, associated with different radio interfaces of communication systems, employ a direct conversion based transceiver which...
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7409190 |
Radio-frequency circuit module and radio communication apparatus
An integrated-circuit element and passive components are mounted on a front face of a multilayer substrate. A capacitor constituting a crystal-oscillator circuit is disposed inside the multilayer...
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7406297 |
Clock generation circuit and semiconductor device provided therewith
It is an object of the present invention to solve a problem that malfunction of communication is generated by varying a frequency of a clock due to noise from outside in a case where there is no...
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7389087 |
Adaptive radio transceiver with filtering
An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a...
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7376399 |
Weighted mixing circuitry for quadrature processing in communication systems
Mixing circuitry for quadrature processing in communication systems and related methods are disclosed. The weighted mixing circuitry allows for arbitrary dividers to be utilized in generating the...
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7376396 |
Ratiometric transmit path architecture for communication systems
A ratiometric transmit path architecture for communication systems and related methods are disclosed. This ratiometric transmit path architecture utilizes a single local oscillator signal and...
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7359684 |
Wireless communication system with variable intermediate frequency transmitter
A wireless communication device (UST), comprising an input for receiving baseband data (I, Q) in a first signal having a first frequency. The device also comprises circuitry ( 68 1 , 68 2 ) for...
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7356312 |
Fractional frequency synthesizer
A frequency synthesizer circuit generates an output clock signal having a desired frequency relationship with an input reference signal, and offers essentially arbitrary relational values and...
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7356310 |
Adaptive radio transceiver with floating MOSFET capacitors
An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a...
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7349673 |
Adaptive radio transceiver with an antenna matching circuit
An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a...
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7349672 |
Digital signal transceiver
A digital signal transceiver includes a frequency modulator for outputting a high-frequency signal frequency-modulated with a digital signal input thereto, a power amplifier, an antenna terminal,...
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7345543 |
Fast transconductance amplifier
An amplifier including an input stage having two inputs, each input being connected to the control terminals of first and second transistors, a current output of the first transistor being...
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7340220 |
Phase locked loop with power distribution
A phase locked loop includes a detection module, a control conversion module, a controlled oscillation module, a divider module, and a power distribution module. The detection module is operably...
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7324795 |
Method of controlling phase locked loop in mobile station, and mobile station
A method of controlling a phase locked loop in a mobile station and a mobile station of a cellular telecommunications system are provided. The mobile station comprises an integrated phase locked...
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7324789 |
PLL frequency synthesizer architecture for low phase noise and reference spurs
A frequency synthesizer for use in a transceiver generates a relatively high reference frequency with fine frequency resolution and low in-band phase noise by using a digital processor to generate...
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