Legerity, Inc.

Javier V Maga&ntilde;a

Stephen T Janesch

Christopher L McCrank

Eddy Kent Bell

In the broadcast band having a plurality of channels allocated therein, by using high-side injection and low-side injection as described herein, the noise introduced into the channel by the local oscillator signal can be minimized. The local oscillator signal in combination with the intermediate frequency determines the frequency of the channel signal being produced by the transmitter. The selected high-or low-side injection determines whether the bulk of the power is introduced into the combination frequency signal (i.e., the channel) above or below the local oscillator frequency, thereby moving the local oscillator frequency outside the broadcast band. The non-selected sideband is even further outside broadcast band.

Apparatus and method for broadcast band noise reduction in a transmitter with a low IF frequency

In one aspect of the present invention, a method and apparatus are provided for tracking a plurality of frequency-shift-key modulated signals in a communications device. The method includes determining a first threshold value for a first input signal of the plurality of signals, comparing the first input signal to the first threshold value and providing a first output signal. The method includes determining a second threshold value for a second input signal of the plurality of signals, and retaining at least a portion of the first threshold value while determining the second threshold value.

Growing community of inventors

Austin, TX, United States of America

Javier V Magaña

Growing community of inventors

Austin, TX, United States of America

Javier V Maga&ntilde;a

Javier V Magaña