fringing field effect on input impedance in Micro strip antenna

Status
Not open for further replies.
Y

yefj

Advanced Member level 4
Joined
Sep 12, 2019
Messages
1,212
Helped
1
Reputation
2
Reaction score
3
Trophy points
38
Activity points
7,270
Hello,In microstrip patch antenna manual they say that as we increase W there will be more radiation because of fringing field increase then
"Q will reduce " and impedance will reduce.
Why Q will reduce and input impedance will reduce.
Is there some physical logic so i could understand the last part of the claim?
Thanks.

 

Sort by date Sort by votes
There are few ways to express the Q factor of the antenna.

One way is related to antenna bandwidth BW, where Q = Central Frequency / Bandwidth
Another way is based on the antenna input impedance Z, where Q = ωZ/2R. So, for constant R, if Z will reduce, Q will reduce.
 

Upvote 0 Downvote
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…