| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method and a device to perform radio transmission/reception in a super-wideband by a simple device. <P>SOLUTION: Transmission data are converted into desired pieces of bit data by a control signal generation part 100 and supplied to a chirp signal generation part 110. The chirp (CHIRP) signal generation part 110 has a data discrimination circuit 111, a lamp signal generation circuit 112 and a frequency control oscillator 113 whose frequency is variable, etc., each piece of bit data is converted into an up chirp signal which changes from a first frequency to a second frequency and a down chirp signal which changes from the first frequency to the second frequency and the chirp signals are transmitted to an antenna via a high frequency amplifier 120. On the receiving side, the chirp signals are separated by a plurality of predetermined band pass filters, detection signals are outputted by every filter and each detection signal is compressed, combined by a plurality of delay circuits having a predetermined delay amount and bit data at the time of transmission are demodulated. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
