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WO/2005/002072A1 |
The invention relates to an attenuator system for adjusting the output of an HF signal source (1), which is characterized in that between the signal source (1) and an output (2) an electronic attenuator (5) is disposed via mechanical swi...
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WO/2004/109888A2 |
According to some embodiments, a control signal is generated to reduce resonance of a circuit at an operation point, a characteristic of the control signal based on a proximity of an existing operation point to the operation point. Gener...
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WO/2004/105234A1 |
A transconductor circuit, such as a gyrator filter, comprises an arrangement of balanced class AB transconductors, capacitors and floating MOS resistors formed by MOS transistors operating in their triode region. Tuning of the filter is ...
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WO/2004/102805A1 |
A delay circuit includes an input signal line (IN) for inputting an input signal, a capacitor (106) for charging and discharging electric charge, a first switch (101) that is connected to the input signal line and is for charging electri...
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WO/2004/086622A1 |
A delay circuit composed of taps (TAP0 to TAPn) for imparting a unit delay time (&tgr ) interconnected in series to form multiple stages. Each tap has the same structure. An object signal is inputted into a signal input terminal (I1). Th...
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WO/2004/086618A1 |
A nonlinear resistance circuit using capacitance-coupled multiple-input MOSFETs is fabricated into an integrated circuit by a standard CMOS process, and it exhibits two types of nonlinear resistance characteristics, i.e., in Λ and V sha...
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WO/2004/084407A1 |
A gain equalization device whose transmission characteristic can be variably set, thereby realizing flexible and general-purpose characteristic compensation for gain equalization. An integration processor (11) variably sets a cut-off fre...
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WO/2004/084404A1 |
In order to improve a circuit arrangement (100) and a method of controlling at least one transistor (10, 12, 14, , 18), especially of controlling the resistance value of at least one MOS transistor with vanishing DC modulation in such a ...
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WO/2004/084408A1 |
A baseband circuit having a transconductance filter (Gm-C filter) to receive a mixer signal. The Gm-C filter includes lossy integrators with coefficients for the filter to provide a filter frequency response that substantially replicates...
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WO/2004/082324A2 |
A method and system for adjusting the frequency response characteristics of a transducer assembly (312) is disclosed. The transducer assembly (312) includes a modifiable buffer circuit (100) being generally enclosed within a housing (314...
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WO/2004/082139A1 |
The invention relates to a transmission lead based on semiconductor technology with losses in the form of resistive, capacitive and/or inductive components and comprising a plurality of distributed loss-compensating amplifiers connected ...
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WO/2004/077666A1 |
There is provided a voltage-current conversion circuit capable of changing the gain in a wide range by giving adjustment voltage to one control terminal without requiring a switch circuit. The voltage-current conversion circuit includes ...
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WO/2004/075393A1 |
Even when the frequency of the oscillation signal of a voltage controlled oscillator is caused to vary in a wide range and a load circuit is caused to operate intermittently, the oscillation signal of the voltage controlled oscillator ca...
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WO/2004/073175A2 |
Systems and methods are disclosed to provide static and/or dynamic phase adjustments to a data signal relative to a clock signal. For example, the data signal may be delayed by a coarse delay and/or a fine delay to match the timing of th...
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WO/2004/073194A1 |
A hybrid matching system is disclosed for use with a transmitter and receiver. The hybrid matching system includes a pair of transmitter output nodes, a pair of receiver input nodes, and a pair of terminals for interfacing to a transmiss...
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WO/2004/054091A1 |
A negative resistance circuit having a transistor and a plurality of distributed constant lines respectively connected to the three terminals of the transistor further comprises an inductive element or a capacitive element connected betw...
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WO/2004/046652A2 |
A device and method for measuring the electrical properties of electronic signal paths, including wires and wireless channels.
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WO/2004/047291A1 |
A filter device enabling low current consumption and capable of correcting variation. A phase difference detector detects the phase difference of a reference filter. A control signal for correcting variation, i.e., the detection result, ...
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WO/2004/032193A2 |
A method and apparatus for an electronic substrate (1920) having a plurality of semiconductor devices is described. A thin film of nanowires (1910) is formed on a substrate. The thin film of nanowires (1910) is formed to have a sufficien...
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WO/2004/032191A2 |
Macroelectronic substrate materials (5100) incorporating nanowires (2002) are described. These are used to provide underlying electronic (5110) elements (e.g., transistors and the like) for a variety of different applications. Methods fo...
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WO/2004/023653A1 |
Continuous-time filter system with self-calibration means. The system comprises a master control unit (36) and a slave unit with one or more slave filters (27.1 - 27.n). The master control unit (36) comprises an integrator (30) having ci...
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WO/2004/021565A2 |
A filter circuit (10) includes a polyphase filter (14) coupled to a first circuit component (12) and a second circuit component (16). The first circuit component propagates four input current signals (62, 64, 66, 68) to the polyphase fil...
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WO/2004/021561A1 |
A signal amplified by an MOSFET (28) is equal to or below a cut-off frequency of a low pass filter (41) and a signal equal to or above a cut-off frequency of a high pass filter (42) is output to a subsequent stage of amplifier. Here, the...
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WO/2004/017589A1 |
Techniques are provided for the implementation of a signal processing circuit which expands the dynamic range of the signal processing circuit without interrupting the output of the circuit. The technique can receive an input signal (502...
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WO/2004/013961A1 |
A gain-controlled amplifier, a receiver circuit using the gain-controlled amplifier, and a radio communication device having the receiver circuit. The gain-controlled amplifier is compatible with a system that continuously performs recep...
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WO/2004/013962A2 |
An RF matching network includes a switching element for quickly switching between a first matching sub-network and a second matching sub-network, such that the impedance of neither sub-network is coupled to the other when selected by the...
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WO/2004/010501A1 |
The invention relates to an integrated circuit arrangement (150) comprising a monolithic serial inductance (125, 126). The integrated circuit arrangement (150) has an output circuit comprising at least one first output terminal (104, 108...
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WO/2004/008636A1 |
A variable attenuator (400) is disclosed, the attenuator (400) having an input terminal (402) and an output terminal (414). The attenuator comprises at least one FET (420) presenting an impedance to an input signal flowing from the input...
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WO/2004/008298A2 |
An improved capacitive feedback circuit (20) comprises a feedback capacitor (23) having its output terminal connected to a high-impedance node (N). More particularly, the improved capacitive feedback circuit comprises a first branch (24)...
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WO/2004/006433A1 |
A tuning arrangement with a polyphase low IF mixer, a polyphase low IF filter and a polyphase group delay equalizer. The polyphase group delay equalizer has only one or more pole-zero pairs in the upper half of the complex frequency plan...
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WO/2003/105341A1 |
The present invention relates to an active load arrangement Z used to provide proper output load to an object TO under test. The arrangement Z comprises a voltage controlled transistor MOSFET having a source S, a gate G and a drain D. Th...
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WO/2003/105464A2 |
A television tuner is fully implemented on a monolithic integrated circuit. The television tuner includes a baseband SAWF function fully integrated in silicon. The SAWF function includes trap and bandpass filters. A video demodulation ci...
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WO/2003/103131A2 |
An image rejection quadratic filter is tunable to filter image frequencies over a wide band. In one embodiment, the image rejection filter includes in-phase and quadrature phase mixers. The image rejection has a fractional transfer funct...
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WO/2003/103135A1 |
An amplifier circuit comprising a transconductor device connected to a phase shifter section. The phase shifter section has an adjustable phase shift and an impedance at least partially dependent of the frequency of an input signal. In u...
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WO/2003/098807A1 |
The invention provides a low-pass filter suitably used as a loop filter for a PLL or a DLL that has a filtering characteristic equivalent to that of a conventional one and can be realized in a smaller circuit area. The low-pass filter in...
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WO/2003/094347A1 |
A wideband high frequency signal splitter device (100)_utilizing in a signal distribution network is disclosed. An input signal having a substantially extended frequency bandwidth is applied to an input port (106) of the signal splitter ...
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WO/2003/094348A1 |
A channel select filter circuit is disclosed using a current-mode transconductance-capacitor (gm-C) architecture, which is tuned by digitally controlled capacitor arrays. The main filter includes at least one transconductor-capacitor (gm...
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WO/2003/088477A1 |
A variable attenuator comprises a series circuit unit having a first switch transistor and a first resistor which are connected in parallel, a first parallel circuit unit having a second switch transistor and a second resistor which are ...
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WO/2003/088476A1 |
A frequency response adjuster for a frequency responsive circuit, and a method for tuning a frequency response of a circuit, are disclosed. The adjuster may include a time constant sensor, wherein a charging state of the frequency respon...
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WO/2003/085828A1 |
Polyphase filters comprising filters each filter comprising passive elements. The filters are provided with integrators comprising amplifiers with admittance elements in feedback paths to create one or more other poles not situated on th...
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WO/2003/085829A1 |
The invention relates to an application-specific integrated circuit (ASIC (305; 306)) for a low-pass filtering device (300) used for decoupling xDSL channels on a telephone line (Li). The inventive integrated circuit is provided with an ...
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WO/2003/085825A2 |
Processing circuitry (100) includes an analog filter (102) and filter control circuit (106) and processes an analog signal (112) having a varying data rate. The analog filter (102) filters the analog signal (112) based on a transfer char...
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WO/2003/084085A1 |
A receiver apparatus (11) that converts a received signal directly to a baseband signal including a switched capacitor filter (19) that controls, based on a control signal applied to a switched capacitor element (27), a cutoff frequency ...
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WO/2003/083503A2 |
A precision signal delay apparatus and method for introducing time delay to a signal. Precision delay is introduced by a pair of delay locked loops (DLLs) connected in series each with selectable delay (i.e., a Vernier-type circuit). Non...
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WO/2003/079406A2 |
A termination network (104) simultaneously provides a voltage-limited output direct current bias (206) and termination (208) of a broadband distributed amplifier operating down to an arbitrary low frequency. It is capable of being fabric...
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WO/2003/077418A1 |
An integrated coupling network includes an integrated coupling transformer (117) having a secondary winding (118) for coupling to a load (107) and a primary winding (116) for coupling to a source; a first integrated capacitive circuit (1...
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WO/2003/073469A2 |
Methods and systems for controlling delay relatively independent of process, supply-voltage, and/or temperature ('PVT') variations include sensing an output signal after a number of inverters and activating different numbers of transisto...
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WO/2003/065574A2 |
A variable impedance load (104) is provided at the output of a radio frequency (RF) driver amplifier (102) having a variable gain. In an exemplary embodiment, the variable load (104) comprises a resistor (R) in series with a semiconducto...
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WO/2003/065578A1 |
An active filter comprising a first operational amplifier (10) disposed in an inverting integral configuration through a feedback capacitor (14) and a main resistor (15), and a divider (20) connected through a first connecting terminal (...
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WO/2003/063349A1 |
An N-shaped nonlinear resistor circuit using floating gate MOSFETs to realize a variety of N-shaped characteristics that can be approximated by piecewise linear functions of third to seventh orders and further to realize N-shaped V-I cha...
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