Method of generating multi-channel local oscillation frequencies

1. A method of generating multi-channel local oscillation frequencies in an ultra wide band communication system having multiple channels of identical bandwidth, the method comprising:

generating at least one reference frequency;

generating a plurality of auxiliary frequencies by dividing and multiplying the at least one reference frequency; and

generating a plurality of first local oscillation frequencies by mixing the reference frequency and at least some of the plurality of auxiliary frequencies with other auxiliary frequencies, respectively,

wherein each of the auxiliary frequencies used in the mixing is greater than an interval between the frequency being mixed and an outermost frequency in the ultra wide band.

2. The method of claim 1 , further comprising generating a plurality of second local oscillation frequencies by mixing at least one of the first local oscillation frequencies with at least one of the auxiliary frequencies, respectively,

wherein each of the auxiliary frequencies used in the mixing is greater than an interval between the frequency being mixed and an outermost frequency of the ultra wide band.

3. The method of claim 1 , wherein the mixing is performed by using a single side band mixer.

4. The method of claim 1 , wherein the reference frequencies are 9504 MHz and 11352 MHz.

5. The method of claim 4 , wherein the generating a plurality of auxiliary frequencies comprises:

generating 3168 MHz by dividing the 9504 MHz by 3;

generating 2376 MHz by dividing the 9504 MHz by 4; generating 1584 MHz by dividing the 3168 MHz by 2; generating 1056 MHz by dividing the 3168 MHz by 3;

generating 2112 MHz by multiplying the 1056 MHz by 2; and

generating 4224 MHz by multiplying the 2112 MHz by 2.

6. The method of claim 5 , wherein the generating a plurality of first local oscillation frequencies comprises:

generating a first local oscillation frequency of 3432 MHz by mixing the 2376 MHz with the 1056 MHz;

generating a first local oscillation frequency of 3960 MHz by mixing the 2376 MHz with the 1584 MHz;

generating a first local oscillation frequency of 4488 MHz by mixing the 2376 MHz with the 2112 MHz;

generating a first local oscillation frequency of 6600 MHz by mixing the 2376 MHz with the 4224 MHz;

generating a first local oscillation frequency of 10296 MHz by mixing the 11352 MHz with the 1056 MHz;

generating a first local oscillation frequency of 9768 MHz by mixing the 11352 MHz with the 1584 MHz; and

generating a first local oscillation frequency of 9240 MHz by mixing the 11352 MHz with the 2112 MHz.

7. The method of claim 6 , wherein the generating a plurality of second local oscillation frequencies comprises:

generating a second local oscillation frequency of 8712 MHz by mixing the first local oscillation frequency of 10296 MHz with the 1584 MHz;

generating a second local oscillation frequency of 8184 MHz by mixing the first local oscillation frequency of 9768 MHz with the 1584 MHz;

generating a second local oscillation frequency of 7656 MHz by mixing the first local oscillation frequency of 9240 MHz with the 1584 MHz; and

generating a second local oscillation frequency of 7128 MHz by mixing the first local oscillation frequency of 9240 MHz with the 2112 MHz.