Patent ID: 7847646

Claim:
A carrier generator for generating a carrier at a frequency of interest in a wireless communications system, the carrier generator comprising: an oscillator exhibiting a first impedance, the oscillator comprising: an energy storage tank configured to generate a periodic signal, the energy storage tank including at least one inductor and at least one capacitor; and an amplifier coupled with the energy storage tank, the amplifier being configured to amplify an amplitude of the periodic signal; an antenna exhibiting a second impedance smaller than the first impedance; a memory to store predetermined signals for frequency selection and predetermined modulation data; a digital control circuit electrically connected between the memory and the oscillator, the digital control circuit being configured to retrieve the predetermined signals from the memory and send the same to the oscillator through at least one trimming pin, and to retrieve the modulation data from the memory and send the same to the oscillator through at least one modulation pin; and a network coupled between the oscillator and the antenna, the network including at least one inductor or at least one capacitor and being configured to provide a third impedance such that a resultant impedance of the second impedance and the third impedance as viewed from the oscillator toward the antenna is large enough to facilitate the oscillator to generate the carrier at the frequency of interest.