| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a transmitting method which uses simple circuits and applies a ultra-wide frequency band signal, generating no poblems which are caused by fine pulses. SOLUTION: A frequency demultiplier 102 divides the frequency of a synthesizer 101 and outputs a chip clock to a frequency sequence generator 103. The frequency demultiplier 102 divides the frequency of 4 GHz which is oscillated by the synthesizer 101 into halves, and outputs the chip clock SG103 of 2 GHz to the generator 103, which outputs a diffusion code series SG1002 to a multiplier 104, by using a chip clock of 2 GHz. The multiplier 104 multiplies a data series SG101 by a diffusion code series SG104 and obtains a diffusion signal SG105, which is outputted to a multiplier 105. A carrier SG102 is modulated by the diffusion signal SG105 in the multiplier 105, and its modulated signal is outputted to a bandpass filter 106.</p> |
