×

Methods and apparatuses for adaptively controlling antenna parameters to enhance efficiency and maintain antenna size compactness

  • US 8,000,737 B2
  • Filed: 01/15/2007
  • Issued: 08/16/2011
  • Est. Priority Date: 10/15/2004
  • Status: Active Grant
First Claim
Patent Images

1. A communications apparatus comprising:

  • a first antenna;

    a first serial configuration of a first power amplifier and a first matching network;

    a second serial configuration of a second power amplifier and a second matching network;

    a switching element for switchably selecting the first or the second serial configuration for supplying a signal to the first antenna;

    the first and the second power amplifiers supplying a respective first signal of a first power and a second signal of a second power different than the first power to the first antenna for transmitting;

    the first and the second matching networks presenting respective first and second impedances to the respective first and second power amplifiers, the first and the second impedances responsive respectively to a power-related parameter of the first and the second signals;

    a second antenna;

    a third serial configuration of a third power amplifier and a third matching network;

    a fourth serial configuration of a fourth power amplifier and a fourth matching network;

    a second switching element for switchably selecting the third or the fourth serial configuration to supply a signal to the second antenna;

    the third and the fourth power amplifiers supplying a respective third signal of a third power and a fourth signal of a fourth power different than the third power to the second antenna for transmitting;

    the third and the fourth matching networks presenting a respective third and fourth impedance to the third and the fourth power amplifiers, the third and the fourth impedances responsive respectively to the third power and the fourth power; and

    the first antenna operating in a first frequency band and the second antenna operating in a second frequency band different than the first frequency band.

View all claims
  • 8 Assignments
Timeline View
Assignment View
    ×
    ×