| Document |
Document Title |
|
WO/2005/104473A1 |
According to the invention, a wave, corresponding to a signal s(t), may be temporally inverted by application of a first transformation to lower the central frequency thereof to produce a first set of transformed signals Ki(t), then a se...
|
|
WO/2005/101777A1 |
A method of controlling a digital demodulator (922) coupled to an equalizer (930) includes the steps of generating an equalizer value (930A), filtering (944) the equalizer value (930A) to obtain a post filter output, subtracting the equa...
|
|
WO/2005/101653A1 |
A method of controlling a feedforward filter of an equalizer includes the steps of generating a complex representation of an output of the feedforward filter and generating a representation of a decision from an output of the equalizer. ...
|
|
WO/2005/101654A1 |
A method of synchronizing a feedforward filter (46) that receives a signal resulting from the transmission of a series of symbols through a channel, wherein the series of symbols includes a predetermined sequence of symbols includes the ...
|
|
WO/2005/101652A1 |
A method of synchronizing a feedforward filter that receives a signal resulting from the transmission of a series of symbols through a channel, wherein the series of symbols includes a predetermined sequence of symbols includes the step ...
|
|
WO/2005/101655A1 |
A digital receiver for processing a signal received from a channel includes a digital demodulator and an equalizer coupled to the digital demodulator. The equalizer includes a feedforward filter and a decision feedback equalizer (DFE), w...
|
|
WO/2005/101773A1 |
[PROBLEMS] To realize a highly-reliable, stable digital data transmission without the need of reference clock and shake-hand operation. [MEANS FOR SOLVING PROBLEMS] A digital data transmission method for alternatively and periodically tr...
|
|
WO/2005/101680A1 |
Devices (1-4) for exchanging ultra wide band signals are provided with highÂfrequency stages (5,6) for tuning the devices (1-4) to ultra wide bands and with lowÂfrequency stages (7-10) for tuning the devices (1-4) to frequency channels...
|
|
WO/2005/101648A1 |
A dual conversion receiver architecture that converts a radio frequency signal to produce a programmable intermediate frequency whose channel bandwidth and frequency can be changed using variable low-pass filtering to accommodate multipl...
|
|
WO/2005/099399A2 |
A method of controlling sampling frequency and sampling phase of a sampling device from a value generated by an equalizer coupled to the sampling device includes the steps of generating a complex representation of the value developed by ...
|
|
WO/2005/101647A2 |
A device and method for propelling objects using periodic or harmonic vibrations is described. The device comprises a flexible substrate (10) or surface (10) and a source of vibrational energy (12) that is applied to the substrate (10) o...
|
|
WO/2005/101671A2 |
A DC offset removal method and apparatus for use with a receiver, such as a direct conversion receiver. The DC offset error can be upconverted to an intermediate frequency where it appears as a DC offset spurious signal. The DC offset sp...
|
|
WO/2005/099407A2 |
An equalizer (200A) comprises a feedforward filter (210), wherein the feedforward filter includes a plurality of feedforward filter taps, coefficients are associated with the plurality of feedforward filter taps, and values of all of the...
|
|
WO/2005/099115A1 |
An ultrawideband radio frequency pulse is generated by shaping a carrier signal having a selected frequency with a window function. The shaped carrier is gated to produce the ultrawideband pulse. In further embodiments, the window functi...
|
|
WO/2005/094198A2 |
In preferred embodiments, an adaptive equalization circuit including at least two equalization filters (40-43) (each for equalizing a signal transmitted over a multi-channel serial link) and control circuitry (54) for generating an equal...
|
|
WO/2005/096623A1 |
Integrated television receivers with I and Q analog to digital converters on the integrated circuit. The television receivers may be nearly fully integrated, typically with one or more filter elements such as one or more inductors off ch...
|
|
WO/2005/093955A1 |
The present invention relates to a detector arrangement and a charge pump circuit for a recovery circuit recovering timing information for random data. The detector arrangement comprises first latch means for sampling a quadrature compon...
|
|
WO/2005/093945A1 |
A phase detector and method of phase detection. The detector (140) includes a substrate; an impulse generator (160) fabricated on the substrate; and a sampling circuit (180) operationally coupled to the generator and disposed on the subs...
|
|
WO/2005/091492A1 |
A method (60 or 70) and system of reducing collisions in an asynchronous communication system can include the steps at a transmitter (200) of generating (61) a set of known preamble waveforms and transmitting (64) at least one distinguis...
|
|
WO/2005/091514A1 |
The present invention relates to receiver equipment with AC-coupled receiver circuits and AC coupling filters. A switch (3) connected between a first stage (1) and a second stage (2) among the receiver circuits is adapted to switch from ...
|
|
WO/2005/091493A1 |
A harmonic suppression mixer for down converting an RF signal to a complex I and Q baseband signal that uses a plurality of switching mixers each with a gain stage to produce a sinusoidal weighted sum of the mixer outputs. Odd harmonics ...
|
|
WO/2005/086366A1 |
Conventional multimode radio devices have a frequency dividing section of a large circuit scale because as many frequency dividers as the radio systems are required. A frequency dividing section (22) comprises a frequency divider (19) fo...
|
|
WO/2005/083894A1 |
A base station and a method of configuring a base station are provided in a cellular telecommunication system, wherein the base station comprises an electrically tunable duplex filter with a tuning range covering at least two parallel su...
|
|
WO/2005/081398A1 |
The invention relates to a mixer circuit 31 comprising a down-conversion mixing component 33 arranged for down-converting an input radio frequency signal Irf+, Irf-. In order to improve such a mixer circuit, it is proposed that it compri...
|
|
WO/2005/081259A1 |
An input current to a current/voltage conversion circuit (1) is converted, at an output terminal SAIN, into a voltage value and a differential amplifier circuit (5) performs differential amplification of that voltage based on a reference...
|
|
WO/2005/078921A2 |
A low noise amplifier (500) includes a first transconductance device (326) having a control electrode for receiving a first input signal, and a first current electrode; a first load device (322) having a first terminal coupled to a first...
|
|
WO/2005/078916A1 |
A fully integrated, programmable mixed-signal radio transceiver comprising a radio frequency integrated circuit (RFIC) which is frequency and protocol agnostic with digital inputs and outputs, the radio transceiver being programmable and...
|
|
WO/2005/079032A1 |
A demodulator circuit for reproducing data sequence included in an input signal received via a desired transmission system, wherein an exclusive-OR (EX-OR) circuit (254Q,254I) phase compare a first oscillation output signal and a second ...
|
|
WO/2005/076464A1 |
A method for generating phase signals includes triggering a phase register to output a binary number stored in the phase register, wherein the phase register is triggered based at least in part on a voltage signal provided by a voltage c...
|
|
WO/2005/074122A1 |
A quadrature mixer with an LO input is provided. The quadrature mixer receives a signal having a frequency FLO and a signal input having a frequency FSIG and has an output that comprises an output impedance that is high at frequencies of...
|
|
WO/2005/074121A1 |
A digital communications transmitter (100) includes a digital linear-and-nonlinear predistortion section (200, 1800, 2800) to compensate for linear and nonlinear distortion introduced by transmitter-analog components (120). A direct-digi...
|
|
WO/2005/071828A1 |
A demodulator, chip and method for digitally demodulating an FSK signal utilizing a digital data transfer protocol and a digital demodulator circuit have been developed. The data-rate approaches the carrier-frequency. The one application...
|
|
WO/2005/069495A1 |
The invention proposes an LNB using two transposition frequencies chosen on either side of the reception band 200 so as to obtain a transposition of supradyne type 205 and a transposition of infradyne type 204 according to the frequency ...
|
|
WO/2005/067250A1 |
A method and apparatus for compensating I/Q imbalance in receivers is described. The method includes determining a difference between energies of two quadratures, correcting an amplitude imbalance using the difference between the energie...
|
|
WO/2005/067156A2 |
There is provided a radar reception microwave frequency converter capable of preventing interference on the oscillation frequency of the local magnetron by the local transmitter frequency of the microwave frequency converter and enabling...
|
|
WO/2005/067157A1 |
A DC offset correction system for a direct-conversion receiver is disclosed that may include a DC feedback correction servo-loop in signal communication with a baseband section, where the DC feedback correction servo-loop is coupled to b...
|
|
WO/2005/064784A1 |
A slot-based low Intermediate Frequency ('IF') radio receiver comprises an IF local oscillator (3, 5, 19) for producing I and Q IF local oscillator signal components in phase quadrature, I and Q mixer channels (4, 6) for mixing the input...
|
|
WO/2005/064785A1 |
The invention relates to a digital multiplier (M) of an electric signal (S) that is frequency hopping modulated between two frequencies by a periodic electric signal (OL). The fundamental frequency 1/T of signal OL is included between th...
|
|
WO/2005/064787A1 |
To keep generally constant the frequency characteristic of conversion loss during conversion of high frequency received signals into intermediate frequency signals. There are included a balanced balun (10) that branches a local oscillati...
|
|
WO/2005/064786A2 |
A method and system for increasing the compression point of a receiver by deriving a feedback signal from mixer output signals. The feedback signal prevents the receiver from going into compression on strong out-of-band or blocking signa...
|
|
WO/2005/060089A2 |
A quadrature connected passive mixer arrangement for frequency converting analog signals from a first to a second frequency. The arrangement comprises two parallel connected mixers provided as transistors. First and second LO signals and...
|
|
WO/2005/060104A1 |
An oscillator (30) supplies a high frequency signal (S) to a frequency divider (31) . A phase comparator (32) produces a signal measuring phase difference between the divided frequency signal (QA) and a reference signal. A low-pass filte...
|
|
WO/2005/060140A2 |
A method and apparatus is disclosed for incorporating secondary data (528) for transmission as part of or concurrently with network data (532). In one embodiment, the secondary data (528) comprises communication system data for use in co...
|
|
WO/2005/057778A1 |
An AM demodulator using totem pole complementary metal oxide semiconductor transistors having a feedback to provide a common gate voltage of approximately half that across the transistors in the totem pole. The AM demodulator used in a h...
|
|
WO/2005/055449A1 |
A bandpass sampling receiver is proposed for receiving RF signals, comprising: the first ADC, for converting the RF signal into the first path of digital signal under the control of the first sampling clock signal; the second ADC, for co...
|
|
WO/2005/055414A1 |
Multiplier device comprising first to nth multipliers M1 to Mn for multiplying a carrier modulated information signal with first to nth mutually phase shifted and identical, substantially square wave mixing signals MS1 to MSn with 50% du...
|
|
WO/2005/054778A1 |
A method of determining a phase between a first signal and a second signal is provided. The first signal and the second signal correspond to signal transmissions between a first device and a second device. The second device periodically ...
|
|
WO/2005/053259A1 |
A receiver for ultra-wideband communications is provided. One feature of the receiver architecture is that includes only a single correlator. The receiver may be used in wireless and wire communication mediums. The single correlator may ...
|
|
WO/2005/053149A1 |
A mixer circuit of a receiving system that must have a low noise characteristic for a low frequency, wherein a bypass current source (41) is connected, in parallel with an LO transistor (21), between an IF output terminal (33) and the dr...
|
|
WO/2005/048447A1 |
A heterodyne receiver has a mixer with at least one transistor whose operating point can be varied dynamically. The quality of the output signal from the mixer is assessed in order to control the operating point. The operating point is s...
|
