Patents Represented by Attorney, Agent or Law Firm Theodorus Mak
  • Patent number: 6507244
    Abstract: A transmitter has a power amplifier amplifying a radio frequency transmit signal. The radio frequency transmit signal is a non-constant envelope modulated signal. The power amplifier has a first compression point. In a method for sliding a compression point in the transmitter, the power amplifier is operated at a first backoff from the first compression point such that a given adjacent channel power ratio requirement is met for a first peak-to-average ratio of the radio frequency transmit signal. The first compression point is slide to a second compression point for a second peak-to-average ratio of the radio frequency transmit signal, the second compression point being lower than the first compression point. The first and second peak-to-average ratios are dependent on information content of the non-constant envelope modulated signal.
    Type: Grant
    Filed: May 29, 2001
    Date of Patent: January 14, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventor: David Duperray
  • Patent number: 6373441
    Abstract: The invention relates to a dielectric resonator antenna (9) as well as a transmitter, a receiver and a mobile radiotelephone that includes a dielectric resonator antenna. To improve known possibilities of reducing the volume of the DRA (9), which are offered by the planes of symmetry (10) in a DRA, there is proposed to provide an electrically conducting coating on at least one curved surface (11) into which the tangential component of an electric field of an eigenmode assigned to the dielectric resonator antenna (9) disappears. As a result, the volume of the DRA (9) can be reduced considerably, although furthermore the same mode is found at the same frequency. Since there are a plurality of such curved surfaces (11), a particularly advantageous surface (11) can be selected depending, for example, on the desired degree of miniaturization, required bandwidth of the evolving antenna and manufacturing conditions.
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: April 16, 2002
    Assignee: U.S. Philips Corporation
    Inventors: Rebekka Porath, Frank Heinrichs
  • Patent number: 6321994
    Abstract: The data carrier of a device provided with the data carrier includes a casing which is formed by injection molding and which accommodates a holding device for holding a chip and at least one transmission coil, and also includes an electrically conductive connector connected to the holding device and arranged to connect the chip terminals of the chip to the coil terminals of the transmission coil. The holding device includes a holding foil and the connector is realized while utilizing a conductor frame. The connector is formed by conductor segments of the conductor frame with parts of the conductor segments connected to the holding foil in order to hold the conductor segments. The entire holding foil and the parts of the conductor segments which are connected to the holding foil are fully enclosed by the casing.
    Type: Grant
    Filed: December 20, 1999
    Date of Patent: November 27, 2001
    Assignee: U.S. Philips Corporation
    Inventors: Marcus Toth, Wolfgang Scheucher, Gerald Schaffler, Heinz Kwas
  • Patent number: 6285561
    Abstract: The transmission coil (11) in a device (1) which includes a data carrier module (3) with a holding (4) and an integrated circuit (6) which is supported by the holding (4) and includes a transmission coil (11) which is electrically conductively connected to the integrated circuit (6) and to the holding (4), is covered, except for the area of its two coil connection contacts (13, 14), by a protective layer (16) of an electrically insulating material, a connection wire being provided between each coil connection contact (13, 14) and an associated circuit connection contact (7, 8), the integrated circuit (6) and the two connection wires (19, 20) and the areas of the two coil connection contacts (13, 14) which are not covered by the protective layer (16) being protectively covered by a single protective cap (10).
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: September 4, 2001
    Assignee: U.S. Philips Corporation
    Inventors: G√ľnter Aflenzer, Peter Schmallegger, Joachim Schober, Marcus Toth