APPARATUS FOR GENERATING CDMA SIGNAL

摘要

PURPOSE: An apparatus for generating a CDMA(Code Division Multiple Access) signal is provided to generate the CDMA signal using a Zener diode and a SAW(Surface Acoustic Wave) filter. CONSTITUTION: An AWGN(Additive White Gaussian Noise) signal generating unit(100) has a Zener diode and an impedance matching unit. The Zener diode generates an AWGN. The impedance matching unit matches the impedance of the Zener diode. The first narrow band amplifying unit(200) amplifies the signal outputted from the impedance matching unit. A BPF(Band Pass Filter) unit(300) passes only a signal with a specific frequency band from the signal outputted from the first narrow band amplifying unit(200). The second narrow band amplifying unit(400) amplifies the signal outputted from the BPF unit(300). A SAW filter unit(500) filters the signal outputted from the second narrow band amplifying unit(400), and outputs the CDMA signal.