For PCB via, the antipad is the clearance hole between barrel and no-connect metal layer

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SMA launch optimization


Hi Experts,When I do SMA launch optimization, my SMA has characteristic impedance50ohm, but the trac......

asked by zhangjun5960 lastest answer by scott

5 years 1 month

0

votes

2

answers
2453 views

Anti Pads in Differential Pairs


Hello Experts,The benefits of antipads in high speed differential pairs signals are known.But I see ......

asked by sergio lastest answer by Chris.Cotton

5 years 3 months 26 days

0

votes

1

answers
2038 views

the impedance of via


Hi Dear experts,For the same size of vias (10mils) and antipads (40mils), When it connectsto 100ohm ......

asked by zhangjun5960 lastest answer by shlepnev

5 years 3 months 3 days

0

votes

2

answers
2137 views

100ohm via model


Hi Experts,I'm designing a 100 ohm via model with 5% tolerance for 15 gbps lane (260mil thick board ......

asked by sureshkumar.ayyavu lastest answer by sureshkumar.ayyavu

5 years 5 months 7 days

0

votes

4

answers
2359 views

Common mode perfornace of Serdes Channel


Hi ExpertIn the case of optimizing channel IL and RL, most time we only consider the differential mo......

asked by emcesd lastest answer by shlepnev

5 years 5 months 22 days

0

votes

1

answers
1886 views

Optimizing differential vias for high speed serde......


I have been doing some 3D simulations of differential vias usingHyperlynx.3D EM solver. I have found......

asked by joel lastest answer by bertsimonovich

6 years 6 months 3 days

0

votes

3

answers
2391 views

common antipad


Hi,What is the advantage of using common antipad for the differential via inhigh frequency design?In......

asked by kbmanick lastest answer by weirsi

7 years 6 months 8 days

0

votes

2

answers
1688 views

effects of stitching vias last attempt- without a......


Hello Experts,I would like to start out by saying thank you all for the wealth ofinformation availab......

asked by Matthew.Severini lastest answer by weirsi

7 years 10 months 6 days

0

votes

9

answers
1925 views

Differential via optimization


Hi,I optimizated a differential via on PCB using 3d EM software. The main goal is to make SDD11 as s......

asked by emcesd lastest answer by istvan.novak

7 years 11 months 19 days

0

votes

7

answers
1802 views

Via insertion loss


Hi all,I'm trying to find via insertion loss in a RF path that has a antennaconnector on one end, fo......

asked by praveenkumardr lastest answer by jory_mckinley

8 years 1 month 3 days

0

votes

2

answers
2021 views

SV: Re: Effects of anti-pad diameter on SDD11 for......


Hi Pehr,Normally the return loss should become better at both high and low frequencies when increasi......

asked by peter.siljehov

8 years 5 months 13 days

0

votes

0

answers
1746 views

VIA STUB and ANTIPAD


Hi All,I have two questions for you all,1) Instead of backdrilling can we reduce the via stub by cha......

asked by pugal8686 lastest answer by istvan.novak

9 years 4 months 2 days

0

votes

3

answers
2169 views

Package Geometries.


Hello Gurus;Trying to get a general idea of package buildup and geometries. If I imagine a package a......

asked by surita.chandani lastest answer by jory_mckinley

9 years 8 months 17 days

0

votes

6

answers
1604 views

Antipad dimensions


Hello all,What would you consider to be the most important factors that would have animpact on antip......

asked by karthik.guruchandran lastest answer by bertsimonovich

10 years 6 months 12 days

0

votes

3

answers
1809 views

Re: [Possible SPAM] BGA Breakout.


Surita,Now lets get to solving your 2 between math problem. I assume at this point you've read and g......

asked by mhumphreys

10 years 8 months 28 days

0

votes

0

answers
1554 views

BGA Breakout.


Hello Gurus;I am doing some preliminary calculations on the breakout ofa 1,400+  Ball  , BGA. Roughl......

asked by surita.chandani lastest answer by jory_mckinley

10 years 8 months 5 days

0

votes

33

answers
1687 views

PCB modelling wizard ?


Hi,I wonder how everyone here creates the model when you try to do a 3D EMsimulation of PCB related ......

asked by Perry.Qu lastest answer by weirsi

11 years 4 months 13 days

0

votes

7

answers
1918 views

impedance controlled vias


Guys,Is there any good literature on impedance controlled vias? All I could findis the EDN paper by ......

asked by qazi lastest answer by wolfgang.maichen

11 years 7 months 3 days

0

votes

2

answers
1433 views

Matching within 1 mil is just plain sillyness, IM......


Several points I'd like to make. Even though the software says that there is a 1 mil delta, that do......

asked by scott

13 years 3 months 3 days

0

votes

0

answers
1510 views
1 2
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