Patents by Inventor Edgar Schmidhammer

Edgar Schmidhammer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Electrical Component Suitable For Miniaturization with Reduced Coupling
    Publication number: 20160173059
    Abstract: An electrical component includes a functional structure and a circuit element. In some embodiments, a chip is arranged between the functional structure and the circuit element thereby increasing the isolation between the functional structure and the circuit element. In some embodiments, the functional structure is arranged between the chip and a cover.
    Type: Application
    Filed: January 28, 2014
    Publication date: June 16, 2016
    Inventor: Edgar Schmidhammer
  • Mobile Transceiver with Shared User Filter, Method for the Operation of the Mobile Transceiver and Use of a Filter
    Publication number: 20160134308
    Abstract: A mobile communication device includes an antenna and a transceiver circuit having a first port for transmitting first RF signals and a second port for transmitting second RF signals. The second RF signals are different than the first RF signals. A single RF filter is electrically connected between the antenna and the transceiver circuit. The RF filter has an antenna port coupled to the antenna and a transceiver port coupled to the transceiver circuit. The transceiver port of the RF filter is coupled to the first port and to the second port of the transceiver circuit.
    Type: Application
    Filed: May 5, 2014
    Publication date: May 12, 2016
    Inventor: Edgar Schmidhammer
  • Electroacoustic Transducer having Reduced Losses due to Transverse Emission and Improved Performance due to Suppression of Transverse Modes
    Publication number: 20160126928
    Abstract: An electroacoustic transducer has reduced loss due to acoustic waves emitted in the transverse direction. For this purpose, a transducer comprises a central excitation area, inner edge areas flanking the central excitation area, outer edge areas flanking the inner edge areas, and areas of the busbar flanking the outer edge areas. The longitudinal speed of the areas can be set so that the excitation profile of a piston mode is obtained.
    Type: Application
    Filed: December 22, 2015
    Publication date: May 5, 2016
    Inventors: Werner Ruile, Markus Mayer, Ulrike Rösler, Markus Hauser, Ingo Bleyl, Karl-Christian Wagner, Wolfgang Sauer, Michael Jakob, Thomas Ebner, Edgar Schmidhammer, Stefan Berek, Christoph Eggs
  • Circuit Arrangement
    Publication number: 20160056945
    Abstract: A circuit arrangement includes an antenna port, a first receiving port, a second receiving port, a first transmission port, and a second transmission port. A number of 90 degree hybrids are configured to transfer an input signal into two output signals that are phase shifted relative to each other. Two quadplexers each include a first duplexer and a second duplexer. The quadplexers and the 90 degree hybrids are interconnected such that a leakage signal travelling from one of the transmission ports to one of the receiving ports destructively interferes at the receiving port.
    Type: Application
    Filed: April 17, 2013
    Publication date: February 25, 2016
    Applicant: EPCOS AG
    Inventors: Juha ELLÄ, Edgar SCHMIDHAMMER
  • Electroacoustic transducer having reduced losses due to transverse emission and improved performance due to suppression of transverse modes
    Patent number: 9257960
    Abstract: An electroacoustic transducer has reduced loss due to acoustic waves emitted in the transverse direction. For this purpose, a transducer comprises a central excitation area, inner edge areas flanking the central excitation area, outer edge areas flanking the inner edge areas, and areas of the busbar flanking the outer edge areas. The longitudinal speed of the areas can be set so that the excitation profile of a piston mode is obtained.
    Type: Grant
    Filed: September 15, 2010
    Date of Patent: February 9, 2016
    Assignee: EPCOS AG
    Inventors: Werner Ruile, Markus Mayer, Ulrike Rösler, Markus Hauser, Ingo Bleyl, Karl-Christian Wagner, Wolfgang Sauer, Michael Jakob, Thomas Ebner, Edgar Schmidhammer, Stefan Berek, Christoph Eggs
  • Circuit arrangement including hybrids and duplexers between antenna, transmission and reception ports
    Patent number: 9240622
    Abstract: A circuit arrangement includes an antenna port, a transmission port, and a reception port, each of which is connected to one respective 90° hybrid that splits an input signal into two output signals that are in quadrature. The circuit arrangement also includes two duplexers which are connected in such a way that the two output signals emitted by the 90° hybrid that is connected to the transmission port constructively interfere on the antenna port, while spurious signals caused by the two output signals destructively interfere on the reception port.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: January 19, 2016
    Assignee: EPCOS AG
    Inventors: Edgar Schmidhammer, Juha Ella
  • Acoustic wave filter having reduced non-linearities, and method for production
    Patent number: 9231556
    Abstract: An acoustic wave filter having reduced non-linearities as well as a production method are disclosed. A filter comprises a first electroacoustic transducer having a first metallization ratio and a second electroacoustic transducer having a second metallization ratio. The metallization ratios range from 0.2 to 0.8, and the metallization ratio of the first transducer is no more than 0.8 times the metallization ratio of the second transducer.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: January 5, 2016
    Assignee: EPCOS AG
    Inventor: Edgar Schmidhammer
  • Amplifier module with multiple 90 degree hybrids
    Patent number: 9219297
    Abstract: The invention relates to an amplifier module, comprising at least one amplifier (PA), an antenna port (ANT), a transmission port (TX), a reception port (RX), and a circuit arrangement having at least three 90 DEG hybrids (HYB1, HYB2, HBY3), which each divide a respective input signal into two output signals, wherein the two output signals have a relative phase shift of 90 DEG from each other, wherein the antenna port (ANT), the transmission port (TX), and the reception port (RX) are each connected to at least one 90 DEG hybrid (HYB1, HYB2, HBY3).
    Type: Grant
    Filed: March 1, 2012
    Date of Patent: December 22, 2015
    Assignee: EPCOS AG
    Inventor: Edgar Schmidhammer
  • Circuit arrangement including hybrids and duplexers between antenna, transmission and reception ports
    Patent number: 9214714
    Abstract: A circuit arrangement includes an antenna port, a transmission port, and a reception port, each of which is connected to one respective 90° hybrid that splits an input signal into two output signals that are in quadrature. The circuit arrangement also includes two duplexers which are connected in such a way that the two output signals emitted by the 90° hybrid that is connected to the transmission port constructively interfere on the antenna port, while spurious signals caused by the two output signals destructively interfere on the reception port.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: December 15, 2015
    Assignee: EPCOS AG
    Inventors: Edgar Schmidhammer, Juha Ella
  • Duplexer with phase shifter circuit
    Patent number: 9197186
    Abstract: A duplexer comprising an improved matching circuit for matching between transmitting path and receiving path is specified. In this case, the matching circuit comprises a hybrid and matching elements.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: November 24, 2015
    Assignee: EPCOS AG
    Inventor: Edgar Schmidhammer
  • Adjustable capacitative element
    Patent number: 9190984
    Abstract: The invention relates to an adjustable capacitative element which can assume discrete capacity values the impedance values Zi of which that it can assume are distributed as evenly as possible in the Smith Chart. An adjustable capacitative element comprises a capacitor which can assume discrete capacity values. The phase of the reflection factor or the impedance values of the capacity values are interspaced equidistantly.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: November 17, 2015
    Assignee: Qualcomm Technologies, Inc.
    Inventor: Edgar Schmidhammer
  • Directional coupler
    Patent number: 9184483
    Abstract: A directional coupler, comprising a first high-frequency line for feeding a first high-frequency signal, a second high-frequency line for feeding a second high-frequency signal, and a coupling line for outputting signals from the first and the second high-frequency lines, wherein the coupling line comprises resistive segments, each comprising a predetermined impedance. Coupling properties and resistive damping and adapting properties can be integrated in the coupling line. A compact and low-cost construction of the directional coupler is thus made possible.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: November 10, 2015
    Assignee: Epcos AG
    Inventors: Gerhard Zeller, Manfred Stadler, Edgar Schmidhammer, Pasi Tikka
  • Detector circuit
    Patent number: 9140733
    Abstract: A detector circuit can be used for determining the reflection coefficients of HF signals in a signal path. The detector circuit includes a bidirectional hybrid coupler, logarithmic amplifiers connected to the hybrid couple, and a subtractor having an offset connection.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: September 22, 2015
    Assignee: Qualcomm Technologies, Inc.
    Inventors: Edgar Schmidhammer, Veit Meister, Gerhard Zeller
  • Impedance matching circuit capable of broadband operation
    Patent number: 9130534
    Abstract: A broadband-operable impedance filter has capacitive elements of variable capacitance in the signal path, an inductive element in a parallel path connected in parallel to the signal path, and inductive elements in the ground path. The impedance filter allows communication in a first frequency band and the reception of HF signals in a second frequency band.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: September 8, 2015
    Assignee: Qualcomm Technologies, Inc.
    Inventors: Edgar Schmidhammer, Pasi Tikka
  • CAPACITOR HAVING AN IMPROVED LINEAR BEHAVIOR
    Publication number: 20150221442
    Abstract: A capacitor having improved linear properties is provided. The capacitor is compatible with manufacturing processes of components which function using BAW. The capacitor comprises a first and a second electrode (E1, E2) in a first electrically conductive layer and a third electrode (E3) in a second electric layer. A dielectric layer (DL) is arranged between the electrically conductive layers. The first electrode (E1) and the second electrode (E2) are the terminal electrodes of the capacitor.
    Type: Application
    Filed: August 1, 2013
    Publication date: August 6, 2015
    Inventors: Andreas Link, Thomas Metzger, Edgar Schmidhammer
  • DUPLEXER
    Publication number: 20150222300
    Abstract: A duplexer having good insulation, small geometric dimensions and good decoupling of the transmit signal path from an antenna which may have poor matching is specified. To that end, the duplexer comprises two transmit filters, a receive filter and two 90° hybrids.
    Type: Application
    Filed: July 29, 2013
    Publication date: August 6, 2015
    Applicant: EPCOS AG
    Inventors: Edgar Schmidhammer, Juha Ellae
  • Filter arrangement and method for producing a filter arrangement
    Patent number: 9099987
    Abstract: The invention relates to a filter arrangement (10) comprising a substrate (16) having a first series resonator (11) and a first and a second parallel resonator (12, 13). The filter arrangement (10) further comprises a carrier (18), on which the substrate (16) is arranged and which comprises a first inductor (17), the first connection of which is coupled to a first connection of the first series resonator (11) by means of the first parallel resonator (12) and to a second connection of the first series resonator (11) by means of the second parallel resonator (13).
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: August 4, 2015
    Assignee: EPCOS AG
    Inventors: Gerhard Maurer, Edgar Schmidhammer
  • Apparatus for wirelessly transmitting information, communication terminal for wirelessly transmitting information and impedance matching method
    Patent number: 9100109
    Abstract: An apparatus for wirelessly transmitting information includes a transmitting/receiving unit and an antenna unit. An electrical signal path is between the transmitting/receiving unit and the antenna unit. A front-end module contains at least one duplexer and is electrically connected into the signal path between the transmitting/receiving unit and the antenna unit. A detector unit is used for detecting signals proportional to radio-frequency signals propagating in the signal path. The detector unit is electrically coupled to the signal path between the transmitting/receiving unit and the front-end module.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: August 4, 2015
    Assignee: EPCOS AG
    Inventors: Edgar Schmidhammer, Pasi Tikka
  • Adaptive impedance matching circuit and method for matching for duplex operation standards
    Patent number: 9054772
    Abstract: A method for the impedance matching of front end circuits to antennas in mutually different transmission and reception frequency ranges is specified. A suitable matching circuit is furthermore specified. The impedance matching in a transmission frequency range is determined such that an excessively poor impedance matching in a reception frequency range is prevented in this case.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: June 9, 2015
    Assignee: Qualcomm Technologies, Inc.
    Inventor: Edgar Schmidhammer
  • Front-end Circuit for Band Aggregation Modes
    Publication number: 20140329475
    Abstract: A front-end circuit for a wireless communication unit includes at least two antenna feeds. At least one of the antennas is coupled to an antenna switch. The circuit comprises filters and duplexers and is prepared to operate a number of FDD frequency bands. Each FDD band comprises an Rx band for receive signals and a Tx band for transmit signals. The circuit provides a single band operation mode for each frequency band and aggregated band operation modes. In an aggregated band operation mode Rx signals can be received in two different frequency bands at the same time as well as Tx signals can be transmitted in at least one of the two different frequency bands. In addition, TDD bands as well as GSM bands are covered.
    Type: Application
    Filed: September 22, 2011
    Publication date: November 6, 2014
    Applicant: EPCOS AG
    Inventors: Juha Ellä, Pekka Ikonen, Edgar Schmidhammer, Pasi Tikka