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WO/2009/096376A1 |
It is possible to provide a voltage-current converter which can realize a variable filter having a steep cut-off characteristic with a small area. The voltage-current converter includes: one or more sampling/holding units for sampling an...
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WO/2009/090244A1 |
Electrical resonator device, capable of operating at variable frequency, ω comprising at least: - an acoustic wave resonator, - a first electrical circuit coupled in parallel to the resonator with an adjustable complex impedance whose i...
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WO/2009/077856A2 |
A variable simulated inductor comprises an integrator connected to receive the voltage across the input to the circuit. The output of the inductor is connected to a control terminal of a transconductor connected across the input of the c...
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WO/2009/071430A1 |
A filtering arrangement comprises a reference voltage input (1) and a compensation current arrangement (10) coupled to the reference voltage input (1) and configured to provide a control current at a current output (2) as a function of a...
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WO/2009/068901A1 |
A tuneable filter is provided in whicha received signal in a first frequency rangeis translated to a signal of a higher frequency rangeby means of a switchable frequency oscillator signal, filtered in a narrow band filter and then down-c...
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WO/2009/064968A1 |
A tunable matching circuit is adjusted primarily based on transmitter oriented metrics and is then applied to attain a desired tuning for transmitter and receiver operation. In a TDM system, this is accomplished by identifying an optimal...
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WO/2009/060407A1 |
The present applications relates to a filtering device (3) comprising a first amplifying unit (10) comprising a first connection (Z2) from an output of the first amplifying unit (10) to an input of the first amplifying unit (10). The fil...
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WO/2009/058509A1 |
A computer readable storage medium includes executable instructions to construct a delay element to replicate the timing of critical gates and paths within a segment of an asynchronous circuit. The rise and fall delay mismatch of the del...
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WO/2009/053210A1 |
A loop filter in a phase lock loop circuit comprising a reference precision resistor, a first FET and a second FET, wherein the gate of the first FET is tied to the gate of the second FET, and a filter capacitor connected to the first FE...
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WO/2009/049855A1 |
An enhancement circuit for enhancing the value of the inductance of a coil having a first winding (L1). The enhancement circuit comprises a second winding (L2) forming a transformer (T) with the first winding and having a first terminal ...
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WO/2009/044441A1 |
A single differential converter has a first amplifier which outputs a first voltage signal corresponding to a single-phase input signal and a second amplifier which outputs a second voltage signal corresponding to the first voltage signa...
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WO/2009/042060A2 |
Various embodiments are directed to providing constant phase digital attenuation. In one embodiment, a digital attenuator circuit (100) comprises an input node (102) to receive an input signal to be attenuated, an output node (104) to ou...
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WO/2009/037625A2 |
A tunable RF filter, comprising: an emitter follower stage (2); and a common emitter stage (4); the common emitter stage (4) providing feedback to the emitter follower stage (2). The common emitter stage (4) may comprise a first transist...
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WO/2009/035767A1 |
A circuit having: an input matching network, a transistor (14) coupled to an output of the input matching network; and wherein the input matching network (12) has a first input impedance when such input matching network (12) is fed with ...
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WO/2009/034659A1 |
The tunable impedance circuit comprises capacitors C1 and C2, an inductor L1, and an inductor L2 magnetically coupled with the inductor L1. The control current Icontrol with variable phase and amplitude from the control circuit 13 flows ...
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WO/2009/032415A1 |
A method is provided for designing an input network for a GaN transistor device. The method includes: driving the device through the input network E with a relatively large input signal power level; varying parameters of the input networ...
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WO/2009/029721A1 |
In an exemplary embodiment, a circuit is disclosed comprising a plurality of inputs, each input to receive a radio frequency waveform from a plurality of differential input waveforms having different phases; and an inverter circuit to in...
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WO/2009/012804A1 |
In order to determine the wave delay time between at least one inverter (31a, 31b, 33a, 33b) in a plasma power supply device (10) and a load which is connected to the plasma power supply device (10) at least one RF pulse, which passes fo...
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WO/2009/012866A1 |
A plasma supply device generates an output power greater than 500 W at an essentially constant basic frequency greater than 3 MHz and powers a plasma process to which is supplied the generated output power, and from which reflected power...
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WO/2009/012735A1 |
The invention relates to a plasma supply device (10, 10') for the generation of a power output > 500 W at a substantially constant base frequency > 3 MHz and for the power supply of a plasma process, to which the power output generated i...
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WO/2009/010735A1 |
The present invention provides a sensor system and a corresponding sensing method employing the sensor system. The sensor system comprises a sensor (12) having an input (20) and an output (22), a feedback path (16) from the output to the...
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WO/2009/007663A2 |
The invention relates to a nonlinear filtering device (10) including a first processing branch comprising, in series, a subtractor module (11) receiving an input signal (E), a fixed gain module (12), an adder module (13), an integrator m...
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WO/2008/151435A1 |
An improved bias generator incorporates a reference voltage and/or a reference current into the generation of bias voltages. In some cases, the output of a biased delay element has a constant voltage swing. A delay line of such constant ...
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WO/2008/149881A1 |
A voltage-to-current converter is provided with a converter input terminal, a converter output terminal, a voltage-to-current converting section for converting a voltage inputted to the converter input terminal into a current, and a curr...
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WO/2008/142857A1 |
A semiconductor integrated circuit is characterized in that it comprises analog macros each having a comb capacitor (10), each comb capacitor (10) is composed of comb-shaped electrodes (11, 12), the comb tooth portions (13) of the electr...
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WO/2008/140903A1 |
A balun circuit (10) comprises a balun transformer (12) having first and second windings (13, 15), and first and second variable capacitors (18, 20). The first variable capacitor (18) has a first plate electrode coupled to the first term...
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WO/2008/132160A1 |
The present invention relates to a phase shifter, which includes at least two cascaded delay stages (1, 2) each including a first differential pair of bipolar transistors (Q1, Q1) and a second differential pair of bipolar transistors (Q2...
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WO/2008/132668A2 |
The present invention relates to a tunable filter device for providing a tunable band pass characteristics for the receive path of a multi-band front-end module. According to the invention is proposed, a distributed, wide-band amplifier ...
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WO/2008/131545A1 |
A voltage level shifter with an input transistor pair, a cross-coupled load chain transistor pair and a pair of current sources, effects reduced power consumption through the use of the cross-coupled load chain transistor pair to minimiz...
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WO/2008/129125A1 |
A method and an arrangement for matching the antenna of a radio device in transmitting condition. The antenna impedance in the output of the power amplifier of a transmitter is adjusted by means of a π-shaped reactive matching circuit, ...
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WO/2008/123919A1 |
The various embodiments disclose capacitor multiplier circuits that may be integrated into imaging devices, such as for semiconductor Complimentary Metal Oxide Semiconductor (CMOS) image sensors, to create an effective capacitance in res...
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WO/2008/119680A1 |
The invention relates to a lock-in amplifier comprising an additional phase-sensitive detector (7), in which the measurement signal (x) is mixed in a multiplicative fashion with the reference signal (r), which is phase-shifted by 90 degr...
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WO/2008/114455A1 |
A switching capacity generation circuit (12a) for enhancing the operational characteristics of a switch element by reducing the on-resistance and the parasitic capacitance of the switch element. The switching capacity generation circuit ...
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WO/2008/105257A1 |
A high-frequency circuit includes: a first amplification circuit (3) having a first input terminal, a first node which non-reversely amplifies an input signal for output, and a second node which reversely amplifies the input signal for o...
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WO/2008/106331A1 |
A dual input low noise amplifier (LNA) for multi-band frequency operation is disclosed. The dual input LNA simultaneously operates in two amplifier configurations for the two inputs (201 and 203), of a first frequency band and a second f...
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WO/2008/103341A1 |
A protection setting determiner (118) adaptively updates settings of protection functions in memory of a protection device (106) that protects a machine (102) that provides power to a power system (104), wherein the settings are updated ...
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WO/2008/099293A1 |
Method and circuit for controlling and for adjusting a signal filter in an easy, cost effective and discrete way comprising: an analog signal filter unit (11) and a filter control unit (12) coupled to the analog signal filter unit (11), ...
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WO/2008/069785A1 |
An active distributed signal splitting apparatus (100, 200, 300) has an architecture conducive for cost-effective expandability, and provides improved features including, for example, independent frequency selection for output signals. A...
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WO/2008/069384A1 |
A broadband active balun using reactive feedback and a balanced mixer using the balun are provided. The broadband active balun comprises a common gate FET having a source connected to an input terminal, a gate connected to the ground, an...
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WO/2008/066552A1 |
An active LC band pass filter 10 includes a single LC pair and a plurality of active amplifiers providing a number of separate resonance circuits. The active amplifiers compensate ohmic losses, high frequency skin effects, and high frequ...
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WO/2008/059097A1 |
The invention is characterized in that it comprises a plurality of impedances (R2, C3, R4, R5) and at least one operational amplifier (51, 52), and means (53) for connecting a resistive sensor (Rs) to the electronic circuit (50) such tha...
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WO/2008/059744A1 |
Provided is a receiving device having a filter circuit (6) mounted therein. The filter circuit (6) includes N-th order active filters (8, 9 and 10), a switch circuit (14) for switching whether or not the active filter (9) is to be shorte...
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WO/2008/053555A1 |
[PROBLEMS] To reduce the distortion or delay of the input waveform of a high-speed analog signal caused by the capacitances of protection elements inserted, for ESD protection, in a high-speed analog signal input circuit, and determine t...
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WO/2008/043843A1 |
An adjustable complex impedance circuit for gain slope control comprising two pairs of transistors (T1 -T2 and T'1 - T'2), each pair having coupled their emitters, cross- coupled bases and cross-coupled collectors. A control voltage (Vx,...
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WO/2008/035698A1 |
Provided is a variable attenuation circuit, which has linear attenuation control characteristics and excellent noise characteristics and is strong against variance on a Si substrate. The variable attenuation circuit is provided with a si...
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WO/2008/024729A1 |
A broadband impedance matching circuit using high pass and low pass filter sections alternatingly cascaded together to yield considerably broader band matching than two high pass sections or two low pass filter sections. By alternating t...
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WO/2008/021305A2 |
Systems and methods for wireless transmission of a modulated audio signal to a receiver using near-field or proximity transmission are presented. In exemplary embodiments of the present invention, such systems and methods can receive a b...
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WO/2008/018276A1 |
A voltage controlled oscillator is provided to make it possible to enlarge a variable frequency range with an increase in a conversion gain suppressed. A converter (12) converts an input voltage to a first physical amount. A variable con...
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WO/2008/010331A1 |
Output conductance of a differential current output type circuit constituting a filter body (1) and having a variable negative resistor connected between differential output lines is automatically regulated. The output conductance automa...
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WO/2008/005677A1 |
A loop filter with noise cancellation includes first and second signal paths (720, 730), an operational amplifier (op-amp) (736), and a noise cancellation path. (740) The first signal path (720)provides a first transfer function (e.g., a...
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