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

difference between Wave Impedance, Intrinsic Impedance etc

Status
Not open for further replies.
M

mevadapratik

Junior Member level 2
Joined
May 21, 2009
Messages
20
Helped
2
Reputation
4
Reaction score
0
Trophy points
1,281
Activity points
1,418
Impedance

Hello,

Can anybody tell me what is the difference between Wave Impedance, Intrinsic Impedance, Input Impedance and Characteristics Impedance?

Thank you

Pratik
 


    V

    Points: 2
    Helpful Answer Positive Rating
Re: Impedance

Thanks..........but it would be your great help if you can tell me the specific difference between them.....

Thank you.

Pratik
 

Re: Impedance

The first two are for a medium or a wave itself.
The third is of a transmission line.
The fourth is the thevenin equivalent impedance of a part of the circuit
--
Amr Ali
www.embedded-tips.blogspot.com
 

    V

    Points: 2
    Helpful Answer Positive Rating
Re: Impedance

ok...i get you....can u please tell me what is the difference between wave and intrinsic impedance???

Thank you
 

    V

    Points: 2
    Helpful Answer Positive Rating
Re: Impedance

Wave impedance is the ratio between electric fields and magnetic fields of a propagating wave. Intrinsic impedance is the impedance of the medium that the wave propagates in. It is a characteristic of the medium. The wave impedance is equal to the intrinsic impedance.
--
Amr Ali
www.embedded-tips.blogspot.com
 

    V

    Points: 2
    Helpful Answer Positive Rating
Re: Impedance

Are wave impedance and intrinsic impedance same???????????

Thank you
 

    V

    Points: 2
    Helpful Answer Positive Rating
Re: Impedance

Same value but different physical meaning. Please read the first link I sent you.
--
Amr
 

    V

    Points: 2
    Helpful Answer Positive Rating
Re: Impedance

Than you....i got it...
 

Re: Impedance

amraldo said:
Wave impedance is the ratio between electric fields and magnetic fields of a propagating wave. Intrinsic impedance is the impedance of the medium that the wave propagates in. It is a characteristic of the medium. The wave impedance is equal to the intrinsic impedance.
--
Amr Ali
www.embedded-tips.blogspot.com
Click to expand...


Thanks Ali,

I wants to add few more points..

Input Impedance+characterstics impedance we define for bounded medium.
Wave impedance+Intrinsic impedance we define for Unbounded medium.

For free space intrinsic & wave impedance are same
Thanks
 

    V

    Points: 2
    Helpful Answer Positive Rating
The wave impedance is equal to the intrinsic impedance of the medium only when "For a transverse-electric-magnetic (TEM) plane wave travelling through a homogeneous medium, the wave impedance is everywhere equal to the intrinsic impedance of the medium." Source Wikipedia.

free space is a homogeneous medium that's why we have intrinsic & wave impedance are same
 

    V

    Points: 2
    Helpful Answer Positive Rating
I saw many wrong replays here (For example: wave and intrinsic impedance have same value only in TEM mode). Stick on what is mentioned in genuine references like Pozar book. I have just checked wikipedia.org and it seemed authentic.
 
Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top