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WO/2003/017371A2 |
VCO (voltage controlled oscillator) circuits can be manufactured with integrated semiconductor circuits which contain electrical resonant circuits, the resonance behaviour of which may be altered by means of a varactor (2), in other word...
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WO/2003/010890A1 |
A receiver comprises a coil (L2) and capacitors (C1a, C1b, ..., C1n) for constituting a tuning circuit of an input−side filter together with the coil (L2). The tuning frequency is varied according to the capacitance of a capacitor sele...
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WO/2003/010821A1 |
Circuit blocks (1 to 3) formed by the CMOS process and analog control lines 5−1, 5−2, and 5−3 connected to them are arranged in such a manner that they are not overlapped in the layout. More specifically, the analog control lines 5...
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WO/2003/005582A2 |
The invention relates to a multiplier circuit for multiplying two input signals, in which two transistor pairs (2, 3; 4, 5) couple a first input (1, 2) to an output (9, 10) of the multiplier, whereby charge connections of the transistor ...
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WO/2003/003596A1 |
A receiver in which the sneaking noise from a crystal oscillator is reduced. A high frequency amplifier circuit (11), a mixer circuit (12), a local oscillator (13), intermediate frequency filters (14, 16), an intermediate frequency ampli...
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WO/2003/001670A1 |
The invention relates to an adaptive Radio Frequency (RF) filter (11), which is particlarly useful as an RF filter in Wireless Local Area Networks (WLAN's). As greater demands are placed on RF systems, for example in WLAN's in order to i...
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WO/2003/001692A2 |
Local oscillator apparatus comprising communication signal terminals (LNA IN, LNA INX; RF OUT,RF OUTN) for a communication signal, especially in a receiver or a transmitter, and a controlled frequency oscillator (204; 404) for producing ...
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WO/2002/100014A1 |
When a radio mobile station, during communicating with a base station at a frequency, switches the frequency to another frequency and measures the receiving level thereof, the AD data of an input to a despread demodulation circuit (6) is...
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WO/2002/100123A1 |
A radio communication apparatus includes a low−speed clock oscillator generating a low−speed clock signal for reception timing estimation, a frequency deviation measurement time control block for deciding a deviation measurement time...
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WO/2002/099988A1 |
An automatic frequency control device comprising an AFC mode controller (21) for changing the operating mode in accordance with a previously calculated frequency variation, a maximum ratio synthesizing unit (23) and phase rotation amount...
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WO/2002/093748A1 |
A receiver uses an adaptive algorithm to tune a low-cost crystal oscillator according to a temperature compensation profile so as to produce a precision master reference frequency despite temperature, initial tolerance, and aging effects...
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WO/2002/093400A1 |
The invention sends a hot link to a device. The device may be on a wireless network, a wired network, or directly coupled to the device sending the hot link. The hot link contains an associated action that is performed by the device rece...
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WO/2002/093875A2 |
The invention is directed to associating a received command with a control such as a push button on a mobile telecommunication device, and enabling an action associated with the command to be performed when the control is later activated...
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WO/2002/093800A1 |
A mobile device (620) provides an opinion system (600) for receiving opinions from a user and displaying results relating to the received opinion. Opinion user interface elements (621-622) receive input relating to the item of the opinio...
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WO/2002/093408A1 |
The invention is directed to mobile device (Fig 5, No 502) that obtains presence information for multiple users of other mobile devices (Fig 5, No 508) and aggregating this information for display by at least one of the users. The aggreg...
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WO/2002/093732A2 |
The invention relates to an integrated tuner circuit, preferably to a TV-tuner circuit using double conversion. It is a major purpose of the invention to modify a prior art tuner circuit in a way such that a high degree of integration is...
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WO/2002/093761A1 |
The invention provides a method, system, and apparatus for finding, playing, and recording broadcasts on a mobile device (400) that includes two or more tuners and also works as a cellular telephone. The user can provide specific prefere...
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WO/2002/089325A1 |
A touch pad device (1) comprising one or more touch sensitive areas (2) provided on at least one side of the housing for allowing a user to touch a certain part of the areas to input desired information, control electronics (52) connecte...
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WO/2002/089327A1 |
By using ICs with combined inputs for the VHF-high bandpass circuit and the UHF bandpass circuit, undesirable resonances occur which are caused by one of the tuned circuits. The problem is solved by providing a switching means for decoup...
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WO/2002/089326A1 |
A radio receiver has a front-end circuit including a first tunable band-pass filter that is capable of tunably selecting channels within at least one frequency of a radio frequency (RF) signal. The front-end circuit includes a first tuna...
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WO/2002/089475A2 |
A system (100) comprising a first apparatus (101), which is adapted to store and/or read audiovisual information into or from a memory (112), and a second apparatus (102), which is adapted to control the first apparatus (101). The second...
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WO/2002/089319A2 |
A tuning circuit (28) for compensating an inter-stage matching network (38) included in an integrated multistage radio frequency (RF) amplifier (22) includes one or more capacitors (30,32) connected in shunt between ground and a voltage ...
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WO/2002/089312A2 |
An input signal (IN) is filtered (605) to remove aliases and a switched capacitor network (610) undersamples this signal to provide a downconverted, near-baseband signal. An amplifier (615) adjusts the amplitude of this signal to match a...
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WO/2002/087016A1 |
A family of FE dielectric-tuned antennas and a method for frequency tuning a wireless communications antenna are provided. The method comprises: forming a radiator (106); forming a dielectric with ferroelectric material proximate to the ...
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WO/2002/087082A1 |
The present invention provides for low loss tunable matching circuits at rf frequencies. Ferro-electric materials are used to produce low loss tunable capacitors and inductors for use in matching circuits.
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WO/2002/084684A2 |
A tunable capacitor that introduces significantly less loss, if any, costs less and is smaller than previously available. A bias electrode (14) is coupled to a FE material (16). The capacitor electrodes (21, 24) are electro−magneticall...
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WO/2002/084858A1 |
A crystal oscillator having tunable ferroelectric components. A first ferroelectric capacitor is coupled to an automatic frequency control line for fine tuning the reference frequency. A second ferroelectric capacitor is coupled to tempe...
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WO/2002/084857A1 |
A voltage controlled oscillator incorporating a ferroelectric capacitor in its resonant circuit is provided in order to provide superior phase noise performance and a linear control voltage/capacitance relationship. The resonant circuit ...
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WO/2002/084798A1 |
An inverted-F ferroelectric antenna is provided. The antenna comprises a counterpoise, or groundplane (102), and an inverted-F structure radiator (104) having a first end (106) connected to the counterpoise. A fixed dielectric material (...
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WO/2002/084778A2 |
The present invention provides a phase shifting filter and a phase compensating direct downconversion receiver. A DC offset detector detects a DC offset in a received baseband signal and provides a feedback signal. A tunable filter phase...
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WO/2002/084310A1 |
A tunable ferroelectric component (610-614) and a narrowband resonant circuit (610-620) for measuring the loss of the ferroelectric component. The ferroelectric component may be a capacitor integrated in the resonant circuit. The testing...
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WO/2002/084685A1 |
The present invention quantifies and reduces losses in tunable bandpass filters having ferro-electric capacitors. Given a required insertion loss and the quality factor of a resonator, the geometric losses resulting from a particular top...
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WO/2002/084781A1 |
The present invention provides a tunable ferro-electric multiplexer for use in CDMA communication devices. Tunable ferro-electric capacitors are used to tune the resonant frequencies of several resonators used in a multiplexer and to tun...
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WO/2002/084870A2 |
A tuning arrangement in a radio receiver includes a front-end circuit having a tunable band-pass filter that is capable of tunably selecting channels within at least one frequency band of an RF signal. A noise source coupled to an input ...
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WO/2002/084686A1 |
A ferro-electric filter and method of tuning same. The filter includes a switch for switching between quarter wave resonator and half wave resonator modes. The filter also includes a ferro-electric component for tuning the resonant frequ...
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WO/2002/082671A1 |
When a selector switch (26) selects an output of an L-band filter (23), a selector switch (28) is turned off and a mixing device (29) is operated as an amplifier. Simultaneously with this, oscillation frequency of a local oscillator (31)...
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WO/2002/080364A1 |
An entertainment receiver is tuned (14, 16) in response to at least one signal indicative of preferred program content type for a user of the receiver. In response to received and detected program content type, (42) program content type ...
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WO2001024415A9 |
An apparatus that has a feedback circuit (510) that couples a wireless receive channel (590b) to a frequency synthesizer (540b). A method that reduces an offset in a baseband signal by changing a downconversion frequency in response to t...
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WO/2002/075691A2 |
A method and apparatus that gives a human user universal control of electronic devices. The apparatus includes a local display device having a simulation viewer program for simulating controls of the electronice device on a display, wher...
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WO/2002/071604A2 |
Receiver comprising a resonance amplifier for selectively amplifying a modulated carrier signal being coupled to signal demodulation means for narrow band demodulation. Said resonance amplifier comprising a cascade of first and second tr...
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WO/2002/069298A1 |
A remote control (12) includes a touch pad (28) operable in two or more touch pad modes and a switching mechanism (76 for controlling devices having display screens such as home entertainment (HE) devices (16), slide projectors (18), and...
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WO/2002/069493A2 |
A joint demodulator is configured to generate an estimated first frequency or first frequency error for the first signal and an estimated second frequency or second frequency error for the second signal. A first long-term automatic frequ...
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WO/2002/067456A1 |
In a clock frequency controller for CDMA mobile communication terminal, an AFC control section (1) controls the clock frequency by providing a clock signal generating section with a signal corresponding to the time error between a normal...
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WO2001031774A9 |
A programmable capacitor array is used to trim the frequency of a crystal oscillator for initial offset. An apparatus includes the crystal oscillator and an integrated circuit (36) is coupled to the crystal (30) of the oscillator. The pr...
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WO2001026260A9 |
A method that involves comparing an input signal (650) against a first threshold (TH1) and a second threshold (TH2) to generate a first thresholded signal and a second thresholded signal. The first threshold (TH1) is greater than the sec...
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WO2001029980A9 |
A wireless communication device (40) can operate in either of two modes. In the first mode, a first frequency turner (52) locks a first oscillator (60) onto a received signal, received from an antenna (12) via a first receive chain (44)....
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WO2001024537A9 |
A method that involves tracking the maximum peaks of a signal and tracking the minimum peaks of a signal. Then, calculating the midpoint between the maximum and minimum peaks and thresholding the signal against said midpoint. An apparatu...
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WO2001024376A9 |
A sample delay unit (407) stores a plurality of analog to digital converter (401) output samples, which are then averaged to produce a threshold level (410). Then, a comparator (409) repeatedly measures the threshold level (412) relative...
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WO2001028260A9 |
Broadcast signals are detected and matched with signal information, such as call letters, genre and geographical location for corresponding signal sources, based on the geographical location of the receiver and the frequency at which the...
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WO/2002/060058A1 |
A wireless receiver is described having an intermediate frequency (IF) filter that helps the wireless receiver receive a GPS wireless signal or a cellular wireless signal. The wireless receiver also has an IF filter tuning and control ci...
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