Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

fringing field effect on input impedance in Micro strip antenna

Status
Not open for further replies.
Y

yefj

Advanced Member level 5
Advanced Member level 5
Joined
Sep 12, 2019
Messages
1,502
Helped
1
Reputation
2
Reaction score
5
Trophy points
38
Activity points
9,091
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.
1631729900360.png

1631729970126.png
 

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

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top