Multiple frequency communication device

Details Multiple frequency communication device Multiple frequency communication device

1996-07-16

1998-02-24

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at same station

With a common signal processing stage

455 59, 455 76, 455315, 455440, H04B 150

Patent

active

057220530

ABSTRACT:
The dual band code division multiple access radio of the present invention operates on multiple frequencies simultaneously on either transmit or receive. The transmit path operates by splitting the transmit intermediate frequency (IF) path (103) and mixing the IF to two different transmit frequencies using two frequency synthesizers (140 and 145). The receive path (104) has two RF channels (116 and 117) that are mixed with the frequencies generated by the synthesizers (140 and 145) and summed into one IF strip. Thus the radio of the present invention can perform a soft hand-off between frequencies while communicating with both base stations simultaneously. Additional mixing paths and synthesizers can be added if it is desired to communicate with more than two base stations simultaneously.

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