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

Why lumped element loading changes the electric length of an antenna?

Status
Not open for further replies.
C

Chao Gu

Junior Member level 1
Junior Member level 1
Joined
Aug 8, 2013
Messages
15
Helped
1
Reputation
2
Reaction score
1
Trophy points
3
Activity points
102
Can someone theoretically explain why capacitive loading decrease electric length and inductive loading increase electric length?
Are there any papers and books to explain this?
Thanks in advance. QQ截图20131029193034.png
 

Take a dipole for instance, it can be modeled as a series RLC circuit at its first resonance freq. If additional capacitance is added (as in the case of capacitive loading), the equivalent capacitance will decrease and hence the resonance freq will increase, which can be described as an decrease in the electrical length. The increase in the electrical length in the case of inductive loading can be explained similarly.
 
Lot of papers, it`s basic staff.
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top