Patent ID: 6466165
Filing Date: 2002-10-15
Classification: H01Q

Abstract:
A transmitter for supplying a data packet to array antenna elements, the transmitter comprising:a distributor configured to receive the data packet and its destination user information and distribute the data packet to one of first and second paths based on the destination user information; and first and second transmission signal generation circuits which receive the data packets distributed to the first and second paths and generate first and second transmission burst intermediate frequency signals; first and second dividers which receive the first and second transmission burst intermediate frequency signals and divide the first and second transmission burst intermediate frequency signals into a number of signals which equals to the number of the array antenna elements; first phase control circuits configured to receive outputs from the first divider; second phase control circuits configured to receive outputs from the second divider; a first phase shift amount control circuit configured to control phase shift amounts of the first phase control circuits based on the destination user information; a second phase shift amount control circuit configured to control phase shift amounts of the second phase control circuits based on the destination user information; adders configured to add outputs of the first phase control circuits and the second phase control circuits; and frequency converters configured to convert outputs of the adders to radio signals to be supplied to the array antenna elements.