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| Number | Title | Issue Date |
| 8188809 | Output selection of multi-output filter Described is a filtering arrangement in which a first filter is configured to exhibit a first frequency response FR and has a first node and a second node; a second filter is configured to exhibit a second FR and has a first node and a second node; and a third filte... | 05/29/2012 |
| 8183957 | Radio communication apparatus There is provided a radio communication apparatus for transmitting transmission signals of the channel CH1 and the channel CH2, including a first antenna, a second antenna, a dual-band transmitting/receiving circuit having a first terminal for the chan... | 05/22/2012 |
| 8183956 | Diplexer circuit, high-frequency circuit and high-frequency module A diplexer circuit comprising a common terminal, a low-frequency-side terminal, a high-frequency-side terminal, a low-frequency-side path comprising a low-frequency filter disposed between the common terminal and the low-frequency-side terminal, and a high-frequency... | 05/22/2012 |
| 8125296 | Radio device antenna filter arrangement An arrangement for filtering the transmitting signals in a radio device using frequency division duplex. In a radio transmitter, in which the transmitting signal is divided to a plurality of antennas radiating to different sectors, the filtering required in transmit... | 02/28/2012 |
| 8120444 | Circuit for separating or combining high frequency power An improved component for the separation or combination of high frequency outputs includes a coaxial input port located at the front end of the outer conductor. At the opposite end of the outer conductor, a head is located with at least two, and preferably three or ... | 02/21/2012 |
| 8081048 | Branching filter, semiconductor integrated circuit device, and communication mobile terminal A technique for realizing module size reduction while enhancing the anti-ESD characteristic of a low frequency band circuit without the need to add such an element as an ESD filter. In a diplexer included in a high-frequency power amplifier module, a composite groun... | 12/20/2011 |
| 8081047 | Multi-band circuit with first and second signal branches A multiband circuit includes a signal path comprising a first signal branch that includes a first circuit that is transmissive in a first frequency band and a second signal branch that includes a second circuit that is transmissive in a second frequency band. The fi... | 12/20/2011 |
| 8072292 | High-frequency module A high-frequency module includes a balanced demultiplexer including a pair of balanced signal terminals and that has at least one of high differential isolation and high differential attenuation. A distance between an antenna terminal and a second balanced signal te... | 12/06/2011 |
| 8026775 | Decade bandwidth planar MMIC four port transformer A wide bandwidth planar four port MMIC transformer is provided by input diplexers which divide up the incoming signal into a high band and a low band, with the resulting signals coupled to high band and low band four port transformers implemented in one embodiment u... | 09/27/2011 |
| 7973618 | Phase shifter, method of fabricating the same, and duplexer having the same A phase shifter fabricated by a simple process and having a simple structure, a method of fabricating the same, and a duplexer having the same are disclosed. The duplexer includes a transmitting-end filter capable of passing only a signal in the range of a transmiss... | 07/05/2011 |
| 7944325 | Electrical module with specified ground-side connection of filter circuit shunt arms An electrical module with a first substrate, and a component mounted on the first substrate is specified. The component includes a second substrate and a chip arranged on the second substrate. In the module, a filter circuit is realized that includes shunt arms conn... | 05/17/2011 |
| 7924117 | Multi-band high-frequency circuit, multi-band high-frequency circuit component and multi-band communication apparatus using same A multi-band high-frequency circuit for performing wireless communications among pluralities of communication systems having different communication frequencies, comprising a high-frequency switch circuit comprising switching elements for switching the connection of... | 04/12/2011 |
| 7884685 | Band switching by diplexer component tuning A circuit and antenna arrangement includes a diplexer having a single radio frequency input/output interface and dual feed connections with an antenna adapted for use over a plurality of frequency bands. The diplexer has a capacitance connected between the radio fre... | 02/08/2011 |
| 7872547 | Wireless communication device A wireless communication device includes an antenna module, a transceiving module, and a switch module. The antenna module includes a first antenna and a second antenna. The transceiving module includes a first transceiver and a second transceiver. The switch module... | 01/18/2011 |
| 7825745 | Variable bandwidth tunable silicon duplexer A tunable duplexer using voltage-controlled varactors is presented. The center frequency, the pass band, and the stop band are each tunable to meet system requirements. A calibration circuit driving digital to analog converters produces the necessary voltages used i... | 11/02/2010 |
| 7719384 | Broadband channelized circulator A system includes more than one subsystem, each subsystem operating within a different subsystem frequency range, the subsystems comprising a circulator having three or more circulator ports and a direction of circulation, the circulator operating within a specific ... | 05/18/2010 |
| 7659795 | Antenna duplexer and wireless terminal using the same A technology which can realize a high-performance multiband operation in a compact circuit configuration and is advantageous for a wireless terminal of GSM system for which the further increase of the demands is expected in the future is provided. Provided is a mult... | 02/09/2010 |
| 7629862 | Composite duplexer A composite duplexer includes an antenna terminal, a first receiving terminal, a second receiving terminal, a transmitting terminal, a first switch, a duplexer, and a second switch. The first switch includes a first branch contact, a second branch contact connected ... | 12/08/2009 |
| 7586388 | Filter module and communication apparatus In a filter module, a common input/output portion of a switch circuit is set as a first port. A first filter arranged to pass a signal in a first frequency band is connected between a first input/output portion of the switch circuit and a second port. A second filte... | 09/08/2009 |
| 7576627 | Electronically tunable active duplexer This invention provides a novel electronically tunable active duplexer for wireless transceiver applications. It relates to an active duplexer with full-duplex operation, permitting simultaneous transmission and reception of signals at same or different frequencies.... | 08/18/2009 |
| 7535318 | Dielectric device A dielectric device includes a dielectric substrate, a plurality of resonator units, and first and second terminals. The dielectric substrate has an external conductor film thereon. Each of the resonator units has a hole and an internal conductor provided inside the... | 05/19/2009 |
| 7528679 | Circuit arrangement for shifting the phase of an input signal and circuit arrangement for suppressing the mirror frequency Circuit arrangement for shifting the phase of an input signal, which circuit arrangement consists of two branches whose two output signals are 90° phase-shifted, and use of this phase shifter in a circuit arrangement for suppressing the mirror frequency. The filter... | 05/05/2009 |
| 7511594 | Noise filter and noise filter array A noise filter includes a plurality of LC parallel resonant circuits having a plurality of coils which are connected in series and electrically connected to external electrodes at both ends thereof, and capacitors which are connected in parallel to the coils, respec... | 03/31/2009 |
| 7508284 | Hybrid low pass diplex filter A hybrid diplex bandstop filter includes a lowpass filter circuit which passes a first range of frequencies and a highpass filter circuit passes a third range of frequencies. The filter blocks a second range of frequencies. The third range of frequencies is higher t... | 03/24/2009 |
| 7501912 | General matching network for acoustic wave filters and acoustic resonators A method and circuit matches a device to n filters, wherein each filter is a SAW filter, BAW filter, or FBAR filter. The method and system: (a) provide an inductor or transmission line connected between a common terminal and ground; (b) provide a plurality of capaci... | 03/10/2009 |
| 7501913 | Power line communication apparatus and connecting device A cable connecting device for power line communication includes: a first wiring line 231 and a second wiring line 232 through which AC power is capable of being supplied; a power plug 120 which is electrically connected to the first wiring line ... | 03/10/2009 |
| 7495528 | Triplexer circuit The present invention provides a triplexer circuit obtaining an impedance matching in each of frequency bands with a simple configuration and separating a signal excellently. Three filters are connected in parallel with each other and, for signals in a pass frequenc... | 02/24/2009 |
| 7459989 | Integrated phase shifter of differential signals in quadrature A distributed phase shifter including: a first planar winding having its ends defining accesses in phase opposition; a second planar winding coupled with the first one and grounded by a first capacitive element; a third planar winding in a conductive level different... | 12/02/2008 |
| 7446628 | Pole-zero elements and related systems and methods According to one aspect, the subject matter described herein includes a tunable duplexer. The tunable duplexer can include a common node for communicating signals comprising a plurality of frequencies. Further, the tunable duplexer can include first and second band ... | 11/04/2008 |
| 7432781 | Monolithic duplexer and fabrication method thereof A monolithic duplexer and a fabrication method thereof. The monolithic duplexer includes a device wafer, a plurality of elements distanced from each other on a top portion of a device wafer, first sealing parts formed on the top portion of the device wafer, and a pl... | 10/07/2008 |
| 7432780 | Rectangular-to-circular mode power combiner/divider A rectangular-to-circular mode combiner/divider is provided. In one aspect of the invention, a power combiner is provided that comprises a plurality of rectangular waveguide ports arranged in an integral arrangement. Each rectangular waveguide port is operative to o... | 10/07/2008 |
| 7432782 | Signal splitter A signal splitter includes a low-pass filter circuit for permitting a low-frequency component of an incoming signal in an incoming telephone line coupled to a first connecting port to pass therethrough to a second connecting port, and a coupling circuit including a ... | 10/07/2008 |
| 7403085 | RF module The present invention provides an RF module capable of outputting balanced electromagnetic waves without requiring adjustment and easily realizing miniaturization. The RF module includes: a waveguide (3) having an area which is surrounded by a pair of ground ... | 07/22/2008 |
| 7403082 | Dual mode antenna switch module A dual mode antenna switch module (ASM) comprises a UMTS TX port; a UMTS RX port; and a UMTS duplexer, comprising a common port, a TX port coupled to the UMTS TX port and an RX port coupled to the UMTS RX port. The ASM further comprises an antenna port; at least one... | 07/22/2008 |
| 7389090 | Diplexer circuit for wireless communication devices Systems and methods are disclosed for a wireless communications device for receiving wireless electronic signals including first wireless electronic signals at a first frequency and second wireless electronic signals at a second frequency. The wireless communication... | 06/17/2008 |
| 7388453 | High frequency module A high frequency module comprises a switch circuit connected to two antenna terminals and two diplexers connected to the switch circuit. Each of the diplexers incorporates two band-pass filters (BPFs). Each of the diplexers further incorporates a capacitor provided ... | 06/17/2008 |
| 7379751 | Multi-band transceiver and radio communication device using the transceiver A multi-band transceiver has a function of sharing transmitted and received signals of multiple frequency bands by the same antenna. The multi-band transceiver mounts multiple filters that correspond to the multiple frequency bands and multiple amplifiers for amplif... | 05/27/2008 |
| 7369828 | Electronically tunable quad-band antennas for handset applications An electronically tunable quad-band antenna which includes a tunable high band antenna tuned by at least one tunable varactor associated therewith; the tunable high band antenna further includes a substrate, a patch element on said substrate, at least one voltage tu... | 05/06/2008 |
| 7366487 | Receiving band switching circuit with reduced signal loss upon switching receiving band A receiving band switching circuit includes a first high frequency circuit through which a first frequency band signal passes, a second high frequency circuit through which a second frequency band signal passes, and a third high frequency circuit that is provided in... | 04/29/2008 |
| 7359692 | Method of and device for antennae diversity switching The invention relates to the field of wireless communications, more particularly to a method of and device for switching between antennae in communication with a diversity receiver, each of the antennae receiving signals transmitted from a single source. A packet fr... | 04/15/2008 |
