LandLack
Member level 3
Hi, I know that if you suddently change the trace width, you "encounter" a reflection caused by the characteristic impedance (correct me if I'm wrong), but I would like to know how much. My maximum working frequency is 1.5 GHz.
The reason for this is the following: I need to know which attenuator is the best: YAT-15 or PAT-15; apparently, the former has a better VSWR (1.04), but it's footprint has too little pads (0.30 mm vs the 1.6 mm of the trace), while the latter has worser VSWR (1.4) but a smaller pad size "mismatch" (1.5mm vs the 1.6 mm of the trace).
I would like to know which choice is the better overall, and If there's any way or rule to "soften" the trace width change to reduce the problems.
Here are the links for the two devices:
PAT-15 ==> **broken link removed**
YAT-15 ==>**broken link removed**
Thank you in advance for your advice,
Regards,
Landlack
The reason for this is the following: I need to know which attenuator is the best: YAT-15 or PAT-15; apparently, the former has a better VSWR (1.04), but it's footprint has too little pads (0.30 mm vs the 1.6 mm of the trace), while the latter has worser VSWR (1.4) but a smaller pad size "mismatch" (1.5mm vs the 1.6 mm of the trace).
I would like to know which choice is the better overall, and If there's any way or rule to "soften" the trace width change to reduce the problems.
Here are the links for the two devices:
PAT-15 ==> **broken link removed**
YAT-15 ==>**broken link removed**
Thank you in advance for your advice,
Regards,
Landlack