Source for RF "pass-through"?

[DaveC]

Not sure of the proper name, but I'm looking for a connector that provides
connection through a bulkhead, from one PBC to another PCB. Not a "connector"
in the traditional sense. Both sides of it look like the back end of a
solder-type connector; just someplace to solder a wire.

I've searched Digi-Key, Mouser, and a few others, but can't find anything
like this. I've seen them in hi-f comm equipment.

I need one for 2.4 GHz.

Where can I find one?

Thanks,

 

[Watson A.Name \Watt Sun - the Dark Remover\]

Not sure of the proper name, but I'm looking for a connector that provides
connection through a bulkhead, from one PBC to another PCB. Not a "connector"
in the traditional sense. Both sides of it look like the back end of a
solder-type connector; just someplace to solder a wire.

I've searched Digi-Key, Mouser, and a few others, but can't find anything
like this. I've seen them in hi-f comm equipment.

I need one for 2.4 GHz.

Where can I find one?

Thanks,

Well there are FeedThru capacitors, and there are Feedthrus without
capacitance, or should I say, minimal capacitance, maybe a few pF.

 

[DaveC]

Well there are FeedThru capacitors, and there are Feedthrus without
capacitance, or should I say, minimal capacitance, maybe a few pF.

W/O is my preference.

Sources?

 

[John Popelish]

W/O is my preference.

Sources?
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How are you planning to deal with the impedance discontinuity at the
hole? If I was making one or two or these, I would pass teflon coax
through the hole with a band of the outer insulation removed, and
solder the braid to the wall.

 

[maxfoo]

Not sure of the proper name, but I'm looking for a connector that provides
connection through a bulkhead, from one PBC to another PCB. Not a "connector"
in the traditional sense. Both sides of it look like the back end of a
solder-type connector; just someplace to solder a wire.

I've searched Digi-Key, Mouser, and a few others, but can't find anything
like this. I've seen them in hi-f comm equipment.

I need one for 2.4 GHz.

Where can I find one?

Thanks,

Copper tape?






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[Dave VanHorn]

W/O is my preference.

I think what you're looking for is a bulkhead connector. Meant to pass RF
through a metal wall.

The others are thinking feedthrough capacitor, I think, which is a way to
feed DC or low freq signals through the metal wall, but not RF.

 

[DaveC]

I think what you're looking for is a bulkhead connector. Meant to pass RF
through a metal wall.

The others are thinking feedthrough capacitor, I think, which is a way to
feed DC or low freq signals through the metal wall, but not RF.

Yes, that describes what I intend to do.

Source?

 

[DaveC]

How are you planning to deal with the impedance discontinuity at the
hole? If I was making one or two or these, I would pass teflon coax
through the hole with a band of the outer insulation removed, and
solder the braid to the wall.

Let me ask for an expansion on that for a non-professional
hobbiest-experimenter's point of view: the capacitance of the metal as the
coax passes through will change the impedance of the coax?

 

[John Popelish]

Let me ask for an expansion on that for a non-professional
hobbiest-experimenter's point of view: the capacitance of the metal as the
coax passes through will change the impedance of the coax?

As I understand it, you want to pass a 2.4 GHz signal through a metal
wall.

If you pass a wire through a hole in a metal wall, there is an abrupt
change in the impedance of that wire for high frequency waves
traveling along the wire that will cause a big reflection at the
hole. Only a fraction of the energy will pass through. If you pass a
coax through the hole, without breaking the outer braid, the wave is
not affected by the hole, even if the braid makes contact with the
wall.

Am I understanding what you are trying to do?

 

[maxfoo]

Yes, that describes what I intend to do.

Source?

www.johnsoncomponents.com







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