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Patent Searching and Data


Matches 651 - 700 out of 25,243

Document Document Title
WO/2015/143377A1
The present subject matter relates to tunable antenna systems and methods in which a tunable band-stop circuit is provided in communication between a signal node and an electrically small antenna having a largest dimension that is substa...  
WO/2015/140660A1
Radio communication using tunable antennas and an antenna tuning apparatus The invention relates to a method for radio communication using one or more tunable antennas and an antenna tuning apparatus, and to an apparatus for radio commun...  
WO/2015/138040A1
An RF filter comprises a signal transmission path having an input and an output, a plurality of resonant elements disposed along the signal transmission path between the input and the output, and a plurality of non-resonant elements coup...  
WO/2015/132958A1
Provided is an input/output matching circuit, which maintains electrostatic resistance by means of ESD elements, and which, at the same time, has high-speed communication performance without being affected by noise. In the present invent...  
WO/2015/129908A2
An element which oscillates or detects terahertz waves includes a resonance unit including a differential negative resistance element, a first conductor, a second conductor, and a dielectric body, a bias circuit configured to supply a bi...  
WO/2015/129910A2
An oscillation element that oscillates an electromagnetic wave includes a negative resistance element and a resonator including a first conductor and a second conductor, in which the negative resistance element and the resonator are arra...  
WO/2015/129678A1
Provided is a matching algorithm that converges on a matching point regardless of load impedance. A matcher provided with: a directional coupler that detects travelling waves and reflected waves; a matching circuit that has a first varia...  
WO/2015/128008A1
The invention relates to a package (P) for a tunable filter, in which the components of the filter are realized on and in a substrate (S) according to different criteria and separated from one another in at least two superimposed compone...  
WO/2015/128004A1
The invention relates to a tunable HF filter circuit (AHF), which enables good electrical properties, good tunability, and simple control despite low complexity. The filter circuit comprises a first and a second signal route (SW1, SW2) i...  
WO/2015/128006A1
Disclosed is a combined impedance adjustment and HF filter circuit featuring improved impedance adjustment and good frequency tunability of the filter circuit. The circuit comprises a reactance elimination loop for reducing reactance and...  
WO/2015/128005A1
The invention relates to a front-end circuit, in which three signal paths are coupled to a common antenna connection. A filter is arranged in each signal path, which filter is tunable by means of a control circuit in its frequency band. ...  
WO/2015/128003A1
The invention relates to a tunable HF filter which can work with electro acoustic components and which offers good electric properties despite a wide tuning range. The HF filter comprises a tunable filter core (AFK) with electroacoustic ...  
WO/2015/128007A1
The invention relates to a front-end circuit, in which a signal path having a tunable filter is combined with a further signal path having a filter assigned to a fixed frequency band in order to reduce the tuning effort. The signal path ...  
WO/2015/125637A1
A high frequency front end circuit (10) comprises a duplexer (20) and a phase adjustment circuit (30). A balanced line is provided between an Rx filter (22) of the duplexer (20) and a low noise amplifier (LNA). The phase adjustment circu...  
WO/2015/124368A1
The invention relates to a tunable duplexer that is compatible for connection to conventional circuit elements in a mobile communication device. The duplexer comprises a circuit core having a first and a second inductive element, which a...  
WO/2015/127127A1
A receiver device (404) in a coupled coil system (400) for wireless energy transfer includes a receiver coil (410) and a load device (414) operatively connected to the receiver coil and configured to receive a signal from the receiver co...  
WO/2015/121780A2
A drive loop circuitry for a MEMS resonator. The circuitry comprises closed loop means for detecting and amplifying a signal of the MEMS resonator, means for phase shifting the detected and amplified signal, and means for feeding the det...  
WO/2015/123586A1
A two-port tunable or reconfigurable network having a filter transfer function may include: a network input port; a network output port; a hybrid coupler having a hybrid input port, a hybrid isolated port, a hybrid through port, and a hy...  
WO/2015/119178A1
A variable filter circuit (10) comprising a serial arm (11) connected between ports (P1-P2), a parallel arm (12) including a resonator (Re_p1) connected in series between ports (P1-P3), and a parallel arm (13) including a resonator (Re_p...  
WO/2015/119176A1
A filter circuit (10) comprising a serial arm (11) connected between ports (P1-P2), a parallel arm (12) including a resonator (Re_p1) connected in series between ports (P1-P3), and a parallel arm (13) including a resonator (Re_p2) connec...  
WO/2015/119004A1
The purpose of the present invention is to achieve a reduction in the size of a high-frequency-signal transmission line provided with a function for removing common-mode noise. This high-frequency-signal transmission line is characterize...  
WO/2015/117708A1
The invention relates to an apparatus for reducing a magnetic unidirectional flux component in the core of a transformer with at least three legs, in particular a three-phase transformer comprising at least one compensation winding per t...  
WO/2015/119177A1
This variable filter circuit (10) is provided with: a series arm (11) connected between ports (P1-P2); a parallel arm (12) containing a resonator (Re_p1) connected in series between ports (P1-P3); and a parallel arm (13) containing a res...  
WO/2015/119179A1
This variable filter circuit (10) is provided with: a parallel arm (11) connected between a port (P3) and a connection point (A); a series arm (12) containing a resonator (Re_s1) connected in series between a port (P1) and the connection...  
WO/2015/082903A3
Multiplexing apparatus is provided that includes at least one common connection port and at least one channel connection port. One or more radio frequency (RF) paths are connected between said at least one common connection port and said...  
WO/2015/112673A1
A device includes an adjustable capacitance and a switchable inductance coupled to the adjustable capacitance and configured as a tunable resonant circuit, the switchable inductance comprising a tapped structure having a first inductance...  
WO/2015/112298A1
Techniques and mechanisms for switching between a plurality of inputs each to receive a respective analog signal to be transmitted. In an embodiment, switch circuitry comprises a first input to receive a first signal, a second input to r...  
WO/2015/112299A1
Certain aspects of the present disclosure provide apparatus for producing an output signal that may have a phase difference with respect to an input signal. One example phase shifting circuit for producing such an output signal generally...  
WO/2015/108644A1
An apparatus including an impedance circuit (404) and a plurality of inductors (430, 432, 434, 436) coupled to the impedance circuit (404). Each of the plurality of inductors is coupled in parallel to a corresponding switch of a pluralit...  
WO/2015/106785A1
Disclosed are a system and a method for detecting the relative positions of two parts. According to the invention, one of the parts includes a section which is energized by an alternating voltage and which consists of quadrupoles that ar...  
WO/2015/107810A1
A front surface side three-terminal capacitor (11) and a rear surface side three-terminal capacitor (21) are provided on a front surface (2A) and a rear surface (2B) of a circuit board (2), respectively, said front surface side three-ter...  
WO/2015/106452A1
The disclosure provides a quadrature hybrid (300). The quadrature hybrid has a first (301 ), second (302), third (303) and fourth (304) ports and comprises: a substrate (310) having a plurality of dielectric layers; a first (311 ), secon...  
WO/2015/104479A1
The invention relates to an antenna, in particular for chip card with contactless operation, composed of a series or parallel RLC type resonant circuit comprising a total capacitance C, a total inductance L, and a series resistance R, an...  
WO/2014/022147A3
A cascaded diplexer circuit provides a diplexer leg with selectable passbands. The cascaded diplexer circuit has a diplexer with a plurality of first bandpass filters. A second bandpass filter is selectively switched in series with one o...  
WO/2015/105672A1
Exemplary embodiments are related to wideband matching devices. A device may include a primary winding including a first plurality of inductors in series and a first switch coupled to the primary winding and configured to tune the primar...  
WO/2015/102653A1
Modern day radio communications utilize frequency hopping to maximize bandwidth via transceivers configured for real time signal to noise ratio feedback and dynamic modulation frequency control. Energy and bandwidth efficiencies are maxi...  
WO/2015/096670A1
Provided in the present utility model is a resonant feed structured wideband antenna, comprising: an antenna component, a resonant circuit, a ground circuit, and a connecting circuit. The antenna component is connected to the ground circ...  
WO/2015/100402A1
Low noise amplifiers (LNAs) are provided, the LNAs comprising: a common gate matching network; a capacitord; a resistord; a coild, wherein a side1 of coild is coupled to a side1 of capacitord, a side1 of resistord, and a V+ and a side2 o...  
WO/2015/100279A1
A method of pre-stressing the variable capacitor device that experiences a temporary time variant hysteresis effect is provided for electronic circuitry, which may include a mobile communication device. The method includes providing a pe...  
WO/2015/098791A1
A branching device (10) is provided with a switch (SW1), a fixed filter circuit (11), and a variable filter (TF1). The switch (SW1) has a common terminal (Ps11) and individual terminals (Ps12, Ps13). The fixed filter circuit (11) is conn...  
WO/2015/099105A1
A high-frequency filter (10) is provided with a first input/output terminal (P1), a second input/output terminal (P2), a frequency-variable filter (20), and a frequency-fixed filter (30). The frequency-variable filter (20) and the freque...  
WO/2015/093462A1
Provided are: a high-frequency circuit that is provided with a matching circuit that makes it possible to adjust the input/output impedance of a high-frequency device to an optimal value even when the high-frequency device comprises a ci...  
WO/2015/094056A1
The present disclosure relates to a balun suitable for realising a wideband transition in the radio frequency band from an unbalanced transmission line to a balanced transmission line. The balun comprises an input terminal; a two conduct...  
WO/2015/090380A1
An AC power connector (10) for connecting an AC power supply (20) with a device (30) is provided. The AC power connector includes at least one first element (11) connectable with the AC power supply and at least one second element (12) c...  
WO/2015/088413A1
A power circuit suitable for combining or splitting broadband signals. The circuit (10, 100) comprises: a stepped impedance section (20), a core section (30) and a first, second and third port (11, 12, 13), said stepped impedance section...  
WO/2015/020927A3
Techniques for efficiently integrating directional coupler circuitry with other circuit elements of an RF front end. In an aspect, one or more inductors of an RF front end filter is incorporated into a first inductor (L1) of the directio...  
WO/2015/087821A1
This invention provides a filter component that has improved common-mode-noise attenuation characteristics. One end of each of a number of LC series resonant circuits (9a) provided respectively in a number of shunt circuits (8a, 8b, 8c) ...  
WO/2015/087894A1
This variable-frequency filter (10) has a series-arm resonant circuit (21) and a parallel-arm resonant circuit (22), each of which contains a piezoelectric resonator, an inductor, and a variable capacitor. The passband (BWpass) of this v...  
WO/2015/087794A1
On a first-signal-line side, a first inductance element (L1), a first capacitance element (C1), a second capacitance element (C2), a third inductance element (L3), and a fifth inductance element (L5) form a first resonant circuit (RC1); ...  
WO/2015/083415A1
Provided is a filter device that makes it possible to widen bandwidth and yet also has little insertion loss in the passband, has favorable VSWR properties, and is able to suppress rippling in the passband. A filter device (1) in which a...  

Matches 651 - 700 out of 25,243