• Abhishek
    1
    Hello,
    For high frequency application like Ethernet, we typically use special purpose connectors.
    I am thinking of 100Mbps speed.
    What happens if I use regular connector used for electronic control module?
    (Example : https://www.te.com/usa-en/product-2177367-3.html)
    Will it work? is there any article which is published which shows measurement results?
    Will impedance matching be sufficient to retain signal integrity & reduce losses? or any extra care needs to be taken?
  • Glyn Adgie
    3
    If your bandwidth is a only few 100 MHz, then some wiring oddities over a few cm will do no harm. As a rule of thumb, a transmission line discontinuity of 1/20 lambda long is tolerable. From my dim recall of communications theory, 100 Mbits/sec requires a bandwidth of at least 150 MHz. Lamda for 150 MHz is 2m. So a dodgy bit of transmission line no more than 0.1m should be tolerable. Well, yikes! I would never put up with such a mess at VHF. I am sure you can do better.

    I should point out here that microwaves101 is dedicated to microwave topics, where interesting things happen at frequencies of many GHz, and physical features of fractions of a millimeter. On my own admission, I do not really belong here, as my RF expertise is in UHF (300 to 1000 MHz), not microwaves. Having said that, microwaves101 has provided many useful guidelines for my designs.

    On a more practical note, the answer to the question "will it work?" is to test it. To me, testing means hiring some kit or a lab session to find out whether your non-standard connector affects attenuation, bit error rate, and so on.
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