Patents by Inventor Harry van der Pol

Harry van der Pol 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).

  • Calibrating method and apparatus in a telecommunication system
    Patent number: 7054602
    Abstract: The present invention relates to a calibration arrangements and, in particular, calibration arrangements in an antenna receiver included in a radio base station. The receiver (1) comprises an antenna (300) with one or more amplifiers (100, 200) located in a chain, wherein the noise (Na+Ni) produced by the amplifier/amplifiers (100, 200) can be a reference value during estimation of the gain (G) of the receiver (1). Signal loss due to aging of the components and ambient variations as e.g., temperature can be compensated. An advantage of the present invention is that an external reference source when calibrating the gain of a receiver can be avoided.
    Type: Grant
    Filed: January 30, 2001
    Date of Patent: May 30, 2006
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Harry van der Pol
  • Frequency selective RF output power calibration using digital and analog power measurements for use in a cellular telecommunications system
    Patent number: 6633766
    Abstract: In the context of a wideband CDMA (WCDMA) type base station (BS) in a cellular telecommunications network, radio frequency (RF) gain is accurately controlled for each of multiple carrier frequency bands without having to disturb the normal operation of the amplifier chain once installed at the BS. The power of a summed or combined digital baseband user signal is determined and integrated over a specific time interval. The digital baseband signal is upconverted and amplified by one or more (e.g., a chain of) RF amplifiers. The power of the transmitted RF signal (downlink signal transmitted by the BS) is detected in a frequency selective manner, and integrated over the same time interval. The difference between the integrated baseband power and the RF transmit power is determined to provide an overall gain for the RF chain for the specific carrier frequency measured.
    Type: Grant
    Filed: April 24, 2000
    Date of Patent: October 14, 2003
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventor: Harry van der Pol
  • Calibrating method and apparatus in a telecommunication system
    Publication number: 20010012770
    Abstract: The present invention relates to a calibration arrangements and, in particular, calibration arrangements in an antenna receiver included in a radio base station. The receiver (1) comprises an antenna (300) with one or more amplifiers (100, 200) located in a chain, wherein the noise (Na+Ni) produced by the amplifier/amplifiers (100, 200) can be a reference value during estimation of the gain (G) of the receiver (1). Signal loss due to aging of the components and ambient variations as e.g., temperature can be compensated. An advantage of the present invention is that an external reference source when calibrating the gain of a receiver can be avoided.
    Type: Application
    Filed: January 30, 2001
    Publication date: August 9, 2001
    Inventor: Harry van der Pol