US 6,982,945 B1
Baseband direct sequence spread spectrum transceiver
Carroll Philip Gossett, Mountain View, Calif. (US)
Assigned to Google, Inc., Mountain View, Calif. (US)
Filed on Jan. 26, 2001, as Appl. No. 9/772,110.
Int. Cl. H04J 11/00 (2006.01); H04B 7/216 (2006.01); H04B 1/69 (2006.01); H03C 1/52 (2006.01)
U.S. Cl. 370—208 13 Claims
OG exemplary drawing
 
1. A method for transmiting an RF signal comprising:
modulating a data signal with an orthogonal pseudo random code;
transmitting the data signal as a baseband direct sequence spread spectrum CDMA (Code Division Multiplex Access), wherein no additional modulation is performed on the data signal before transmission and the baseband direct sequence spread spectrum data signal is spread across DC to 30 MHz;
driving a mismatched antenna; and
actively servoing a transmit signal to cancel the transmit signal from a receive signal.