Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic 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

Problem with Robert E.Collin equation in his book

Status
Not open for further replies.

amirmg

Newbie level 3
Joined
Feb 26, 2006
Messages
3
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,312
Robert E.Collin

Dear Users
Can anyone tell me why didn't Mr.Collin written {cdz d[V(z+dz,t)]/dt } on the page 74 equation (3.1b) of foundation for microwave engineering second edition.
he has written {cdz d[V(z,t)]/dt }.The voltage on the capacitor is v(z+dz,t) not v(z,t).
 

alard

Member level 4
Joined
Dec 2, 2004
Messages
76
Helped
4
Reputation
8
Reaction score
1
Trophy points
1,288
Activity points
577
Re: Robert E.Collin

this is because V(z+dz,t)]/dt has already been presented by V(z,t)]/dt on the top of P74. So do I(z+dz,t)]/dt
 

amirmg

Newbie level 3
Joined
Feb 26, 2006
Messages
3
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,312
Re: Robert E.Collin

come on man there have been written V(z+dz,t)=V(z,t)+d[V(z,t)/dz]dz
what happened for the second term ?
 

alard

Member level 4
Joined
Dec 2, 2004
Messages
76
Helped
4
Reputation
8
Reaction score
1
Trophy points
1,288
Activity points
577
Re: Robert E.Collin

Sorry, I don't quite understand you.

You question should be why dV(z+dz,t)/dt=dV(z,t)/dt.
I think it is because the differential is to t not z, and take the limit dz to 0.

I hope I answered your question
 

amirmg

Newbie level 3
Joined
Feb 26, 2006
Messages
3
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,312
Re: Robert E.Collin

yea,I asked how can we assume V(z+dz,t)=V(z,t) ,what about the voltage on the inductor ? ad I mainly interested to know when we derivate the term


d/dt{V(z+dz,t)}=d/dt{ V(z,t) + d [v(z,t) /dz ] dz }

==> d (V(t,z) )dt + [d2 V(z,t) /dzdt ]dz

how we vanish the red term ???

thanks for your care
I'm waiting for your reply
amir
 

ng wei

Member level 3
Joined
Apr 3, 2006
Messages
58
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
1,545
Re: Robert E.Collin

does anybody have the solution manual of the book Foundations of microwave engineering by robert collin ---- 2nd edition
 

khansuleman77

Newbie level 1
Joined
Mar 5, 2014
Messages
1
Helped
0
Reputation
0
Reaction score
0
Trophy points
1
Activity points
4
Re: Robert E.Collin

dear did u find the solution manual for the book " foundation of microwave engineering by robert e collin"

kindly if u have.. plz help me
 

Status
Not open for further replies.
Toggle Sidebar

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top