saran7507
Member level 3
smith chart fr4
Hi All,
I have a question on smith chart performance.
I have a pcb of twin lead dipole antenna (FR4 substrate) with a hardline soldered on end of pcb and the other end of hardline soldered in n-type male connector.
I want to see impedance value in smith chart at agilent network analyzer e5070b.
The frequency range is 5.1GHz to 5.8GHz. The centre freq is 5.45GHz.
The results that i got from network analyzer is 53ohms at 5.1GHz and 25 ohms at 5.8GHz.
I can play with the antenna position bcoz im holding the antenna.
Why im getting 25ohms at 5.8GHz?
Is it ok or bad?
I attached the screenshot for ur view.
Urgently need ur reply.
Thanks .
Regards,
Chellappan.
Hi All,
I have a question on smith chart performance.
I have a pcb of twin lead dipole antenna (FR4 substrate) with a hardline soldered on end of pcb and the other end of hardline soldered in n-type male connector.
I want to see impedance value in smith chart at agilent network analyzer e5070b.
The frequency range is 5.1GHz to 5.8GHz. The centre freq is 5.45GHz.
The results that i got from network analyzer is 53ohms at 5.1GHz and 25 ohms at 5.8GHz.
I can play with the antenna position bcoz im holding the antenna.
Why im getting 25ohms at 5.8GHz?
Is it ok or bad?
I attached the screenshot for ur view.
Urgently need ur reply.
Thanks .
Regards,
Chellappan.