Real-Time Propagation Measurement System and Scattering Object Identification by 3D Visualization by Using VRML for ETC System

EURASIP Journal on Wireless Communications and Networking

Table 1 System specification.

Array antenna
Array geometry	8-element uniform linear array
Element spacing	25.77 mm (0.5 wavelength)
Antenna element	Circularly polarized MSA
RF block
RF frequency	GHz
Maximum input power	dBm
Noise figure	dB
Gain controller	dB
Bandwidth	MHz max.
Output signal	Baseband or low IF
ADC block
Input frequency	kHz MHz
Sampling frequency	MHz
Quantization bit	14 bit
FIFO	k sample/ch
FPGA block
FPGA	Xilinx Virtex-II 2 M gate
FPGA memory	about k sample/ch