高频连接器技术讲义

Plug Side
ቤተ መጻሕፍቲ ባይዱ
Electrical Analysis Model
This figure shows the 9-pin model for the electrical simulation. Though the solder pads were included, this model does not include the effects of vias, ground, power planes and/or trace routing on the module and motherboard.
Differential Propagation Delay @ 50ps
111 ps
Differential Cross Talk @ 50ps (20-80%)
0.04 %
0.37 %
Impedance @ 250ps (20-80%)
82.1 Ohms
79.9 Ohms
Changes done on the solder tail of the cable contact (Rev 1) improve impedance matching. However, the increased cable contact thickness (rev 2) proves to be of no consequence to the results.
VSWR @ 1.25 GHz
1.18 1.12
Similar to the impedance results, this plots shows that electrically, Rev 1 and 2 are not distinct from each other.
S-Parameters(S-Parameters─S參數(S11、 S21、S12、S22)
四.設計相關技術與流程
Receptacle Side
SAS Connector, Complete Mechanical Model
Area of interest
To characterize the electrical performance of the SAS connector, the model only included the portion highlighted above.
Pin #1
Pin #9
Pin Designations: G G Tx+ Tx- G Rx+ Rx- G G
SAS Specification Limits*
Differential Impedance @ 50ps (20-80%)
108 Ohms
91.8 Ohms
*SAS-1.1 Revision 0, 10 July 2003
同軸射頻連接器范例
二.高頻連接器,具備如下幾個特點:
三.高頻/射頻连接器的基本性能 1-1特性阻抗(impendence):水管例子講解
1-2插入损耗(insertion loss):对连接器的要求主要是插入损耗小，
反射损耗高,插入损失是指由于连接器的引入而导致的链路功率损耗,定义为 连接器的输出功率与输入功率比的分贝数.如图2,设输入功率为PI, 输出功率为 PO,.则此连接器的插入损耗为: