发明名称 |
RADIO RECEIVER FOR FREQUENCY SHIFT KEYED SIGNALS |
摘要 |
A radio receiver for frequency shift keyed signals of the zero I.F. type. The quadrature outputs of mixers are low-pass filtered and a 90 DEG phase shift at the baseband frequency is introduced in one signal path. The baseband signals are then fully limited and applied to a logic network to provide a digital output indicative of the relative lead/lag condition of the two signal paths. The logic network can conveniently be an EXCLUSIVE-OR gate. |
申请公布号 |
DE3269614(D1) |
申请公布日期 |
1986.04.10 |
申请号 |
DE19823269614 |
申请日期 |
1982.07.15 |
申请人 |
INTERNATIONAL STANDARD ELECTRIC CORPORATION |
发明人 |
VANCE, IAN ALISTAIR WARD |
分类号 |
H04B1/26;H04L27/14;H04L27/152;(IPC1-7):H04L27/14 |
主分类号 |
H04B1/26 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|