Why it is easier for impeance matching on substrate of low permittibiy?

Status
Not open for further replies.
S

shmily0447

Advanced Member level 4
Joined
Apr 5, 2010
Messages
113
Helped
30
Reputation
60
Reaction score
19
Trophy points
1,298
Visit site
Activity points
2,010
Hi all,

Can anyone explain in an easily understandable way that why it is easier for impedance matching on substrates of low permittivity that on substrates of high permittibiy?

Thanks in advance.
 

for a given frequency the effective lambda decreases as the permittivity increases, so the delta change or small changes in length of tx line say quarter wave for matching case, becomes more sensitive as epsilon increases. and so matching would become difficult..!! hope u got what i mean to say.!!
 
I`m not sure. For instance GaA is basic for hight frequency material. It has permittivity =12.96 and loses 0.006.
It depends, low epsilon bigger micro stripe width and so on..
 
Last edited:
Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…