• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 2 answers
  • Subscribers 38 subscribers
  • Views 649 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

0R resistor in a series with an antenna trace

Hemant Tiwari74
Prodigy 40 points

Why do we use an 0R resistor in a series with an antenna trace while designing on chip antenna?

  • 0
    TI__Genius 15590 points

    Hi Hemant,

    It depends what contest you're referring to, but typically there are two cases that come to mind. It can be to select one path or another in the case that there are 2 RF paths (one to an antenna and one to a U.FL connector for example). The other case is to provision for antenna matching on your design. 

    Thanks,

    Alexis

  • 0 in reply to Alexis Crandall20
    Prodigy 40 points

    Hi Alexis,

    thanks for the prompt reply. Basically, I have designed a GSM Antenna on PCB Board. And I am using only a single antenna for now. If I remove the zero-ohm resistor in the trace and connect directly to the antenna, will it change the performance of the antenna? As per my understanding, zero ohms is just acting as a jumper if I remove it there will be no effect on the performance. Please correct me if I am wrong. 

    Thanks

    Hemant

  • 0 in reply to Hemant Tiwari74
    TI__Genius 15590 points

    Hi Hemant,

    If you're not changing anything about the transmission line, then you are correct. 

    Thanks,

    Alexis