| 摘要 |
PURPOSE: A Bluetooth receiver having multiple receiving antennas is provided to install plural receiving antennas, and to extract binary data relative to signals received through the receiving antennas by using energy values of all the signals, thereby improving reliability on data transmissions. CONSTITUTION: Each energy detector(10-14) detects energies for signals received through each antenna(A1-An), and outputs the detected energy values to a tone0 energy adder(16) and a tone1 energy adder(18), respectively. The tone0 energy adder(16) adds up energy values inputted from the energy detector(10), the energy detector(12), and the energy detector(14) by using an SLC(Square-Law Combining) technique, and transmits added values to a comparator(20). The tone1 energy adder(18) adds up energy values inputted from the energy detector(10), the energy detector(12), and the energy detector(14) by using the SLC(Square-Law Combining) technique, and transmits added values to the comparator(20). The comparator(20) compares an output value of the tone9 energy adder(16) with an output value of the tone1 energy adder(18), outputs binary data '0' if the output value of the adder(16) is bigger, and outputs binary data '1' if the output value of the adder(18) is bigger.
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