Patents by Inventor Mika Jaakola

Mika Jaakola 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).

  • Mobile station having dual band RF detector and gain control
    Patent number: 5884149
    Abstract: A multi-band mobile station (10) includes a plurality of RF amplifier sections, one for each frequency band of interest; a controller (18) for selectively enabling, when transmitting, only one of the RF amplifier sections; a directional coupler circuit for detecting the power of an amplified RF signal that is output from the enabled one of the RF amplifier sections; and a single error detection circuit, coupled to the detecting circuit, for generating an error signal. The error signal has a magnitude that is indicative of a difference between the detected power and a desired power. The error signal is coupled to the enabled one of the RF amplifier sections so as to minimize the magnitude of the error signal. The controller may place a non-enabled RF amplifier section into a low power consumption mode. The directional coupler circuit includes an RF detector coupled to the directional coupler, and an impedance matching circuit coupled between the directional coupler and the RF detector.
    Type: Grant
    Filed: February 13, 1997
    Date of Patent: March 16, 1999
    Assignee: Nokia Mobile Phones Limited
    Inventor: Mika Jaakola