发明名称 |
SMALL-SCALE SIGNAL ADDING DEVICE AND DIFFERENTIAL DETECTING DEVICE |
摘要 |
A signal adding device for adding n input signals, comprising n A/D converters, a selector, and a lowpass filter. The n input signals are sampled in sequence by the A/D converter and digitized. Each digitized data is time-division multiplexed by the selector and input to the lowpass filter. The lowpass filter eliminates unnecessary higher-frequency components that are generated by the sampling of the A/D converter. The signal output from the lowpass filter consists of the baseband components only, that is, the signal is equal to an added signal of n input signals.
|
申请公布号 |
CA2154646(C) |
申请公布日期 |
2003.06.17 |
申请号 |
CA19952154646 |
申请日期 |
1995.07.25 |
申请人 |
|
发明人 |
TATSUTA, AKIHIRO;URABE, YOSHIO;TAKAI, HITOSHI |
分类号 |
H04L27/227;H03D3/00;(IPC1-7):H04J3/02 |
主分类号 |
H04L27/227 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|