How to design Meander line antenna

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Element7k

Joined: 07 May 2003
Posts: 390
Helped: 8

05 Jun 2003 18:30 meander antenna

Hi all,

I will like to know the basics of designing a meander line antenna. What I will also like to know is how Skycross seem to be able to use this design technique to control the radiation patterns and obtain a broadband/dualabnd antenna with acceptable gain . I am wondering how this is achieved. Anyone out there who know how this is done. Any information will be very much appreciated.

Cheers,
Element7k

luben111

Joined: 02 Mar 2002
Posts: 105
Helped: 2

05 Jun 2003 20:33 meander line antenna

Hi,

I usually scan the ready antenna (from PCB or paper) , then import it to CorelDraw and draw over it.

Then export the drawn picture to ORCAD MAX file. Works great.

But if you have to calculate the dimensions and the shapes.. I have no idea. For sure, something that's already made like PCB is easy to be reproduced in COrelDraw with extreme precision. For example I succeded to reproduce the PCB from calliper.

So, there are two problems:
- how to create the original curve (to calculate it)
- how to implement this curve into some PCB design program

Regards
Luben

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Element7k

Joined: 07 May 2003
Posts: 390
Helped: 8

05 Jun 2003 22:24 meander antenna design

Dear luben111,

Thank you for you reply. Very much appreciated but perhaps I was vague in stating what I was asking. What I am interested to know is how do I design meander line antennas from scratch. E.g for resonance at a certain frequency band and what are the techniques for obtaining broadband. I am using Microwave Studio and IE3D for simulation so I will have no problems with PCB geometry creation. Anyway, I think most of these meander lines are printed on Mylar or a substrate material so PCB is not too much of a problem here. Geometry can be exported out of the electromagnetic simulator to AutoCAD easily using DXF.

Cheers,
Element7k

luben111 wrote:

Hi,

I usually scan the ready antenna (from PCB or paper) , then import it to CorelDraw and draw over it.

Then export the drawn picture to ORCAD MAX file. Works great.
Luben

kyg

Joined: 06 Dec 2007
Posts: 90

13 Apr 2008 13:18 meandering antenna

hello.....

may i know how do you design the meander line antenna?what software u are used

mainak001

Joined: 01 Dec 2005
Posts: 58
Helped: 1
Location: India

25 Apr 2008 9:58 resonant frequency of meander line antennas.

to design meander line antenna .. u follow the book of

microstrip antennas by ...
ramesh garg .
There u will find the design equation .. And there is also some paper hints ..

BUT why are u want to design it . It is fr practical purpose or only interest based ..
Because meander line antenna are very inefficient . In only radiates at the transmission line edges..

And fr designing purpose IE3D will be the best .. I have done it ..

kyg

Joined: 06 Dec 2007
Posts: 90

20 Aug 2008 9:58 meander line antennas

i am now try to design monopole meander line antenna
but the efficiency is to worse. FREQ that i used for 915MHz
i donno when i done the the simulation the freq not achieve the target freq.
i design for practical purpose.
hope u can help me in order u already done the design meander line antenna.

regards,
kyg

amu811

Joined: 19 May 2008
Posts: 31
Helped: 5

21 Aug 2008 0:56 meander line antenna design

hi
you can achieve required freq by adjusting antennas size, or your matching circuit is not perfect. u can try to modify ant structure.
maybe following paper is helpful to you design.

Tsutomu Endo, Yonehiko Sunahara, Shinichi Satoh, and Takashi Katagi, “Resonant Frequency and Radiation Efficiency of Meander Line Antennas”, Electronics and Communications in Japan, Vol. 83, pp. 51-58, 2000.

sorry,i don't know how to upload this paper. but u can download from http://www3.interscience.wiley.com/browse/?type=JOURNAL

kyg

Joined: 06 Dec 2007
Posts: 90

22 Aug 2008 1:18 antenna meander

meander line antenna that i have design have
limitation size, so i can increase the size?
make it more turn or what?

mainak001

Joined: 01 Dec 2005
Posts: 58
Helped: 1
Location: India

02 Apr 2009 13:42 gain of meander line antennas

Its' actually a reverse process . Generally microstrip Line is useful for ckt designing not for antenna because it can conserve the power in cavity .. bt if u bend a microstrip line in 90 deg ..the wave can't propagate . It will radiate the power so that it will work as an antenna .

It is used beacause for antennas the subs requirement is reverse of microwave ckt .so producing two different types of subs in same board is not a cost effective option ..

So they will use meander line antenna so that they don't have to go for diffrent subs ..

Nut keep in mind that the efficiency is very less for this antenna ..

Added after 1 minutes:

mainak001 wrote:

Enquiry: Re: Meander line antenna
hi, my final year project is about meander line slot antenna. if u know why they invented meander line antenna.can u let me know?just want to know the history of it. and what the differences between MLA and other types of WLAN antenna?
hope u can help me

amu811 wrote:

Bt the paper is not for free .. can u plz upload it here ?

Go to write a reply .. there u wull find upload option(down).....

pwimcess

Joined: 31 Mar 2009
Posts: 1

04 Apr 2009 14:31 how do meanders increase in size?

dear mainak001,
thanks for the reply. i wonder how we can know the efficiency of the MLA? can u recommend any journal that states the history of MLA and its limitation?

Question

vikash_i

Joined: 06 Apr 2009
Posts: 5

06 Apr 2009 5:43 meander-line slot

hii guys,
i have designed a meander line antenna but i dont know how they calculated the width ,length and no of turns......
i want to know whether there are any standard design equations for calculating the width ,length and no of turns...
check out the papers which i uploaded

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