Parallel Plate Waveguides Using Hfss

PROJECT REPORT

“IMPLEMENTATION OF PARALLEL PLATE WAVEGUIDES USING HFSS SOFTWARE ” BY M.Prasanth Reddy M.Sai Prathap Reddy T.!a"si #rishna !.Sandeep Ch%&dary

14BEC1126 14BEC119 14BEC11$9 14BEC111

A report report submitted to the SCHOOL OF ELECTRONICS ENGINEERING in partial fulfillment of the requirements for the project of the course of ECE202 – TRANSMISSION LINES AND FIELDS in B.Tech. ELECTRONICS AND COMMUNICATION ENGINEERING

VIT UNIVERSITY, CHENNAI Va!a"#$ – %e"a&'a((a& R)a! Chea* – +00 2A$*" 20+

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BONAFIDE CERTIFICATE /IMPLEMETA TAION ION OF PARALLE PARALLEL L PLATE PLATE Cert Certi' i'ie ied d that that this this pr%(e r%(e)t )t rep rep%rt enti entit* t*ed ed /IMPLEME WAVEG EGU UIDES USING HFSS SOFTWARE is a +%na'ide &%r, %' P$a1ha Re!!34BEC506 - Va&7* %$*7ha34BEC856- Sa!ee Ch)9!a$34BEC06, P$a7a1h Re!!34BEC2+6 &h% )arried %t the Pr%(e)t &%r, nder "y sper/isi%n and 0idan)e.

P$):. Ra;* P$a(a7h D9*;e!* ss%)iate Pr%'ess%r S)h%%* %' E*e)tr%ni)s En0ineerin0 SE3SE !5T ni/ersity- Chennai







AC%NOWLEDGEMENT

7e &ish t% e8press %r sin)ere than,s and deep sense %' 0ratitde t% %r pr%(e)t 0ideP$):. Ra;* P$a(a7h D9*;e!*, ss%)iate Pr%'ess%r- S)h%%* %' E*e)tr%ni)s En0ineerin0 - '%r his )%nsistent en)%ra0e"ent and /a*a+*e 0idan)e %''ered t% s in a p*easant "anner thr%0h%t the )%rse %' the pr%(e)t &%r,.

7e are e8tre"e*y 0rate'* t% D$. S.R.S P$a'aha$a, ean %' the S)h%%* %' E*e)tr%ni)s En0ineerin0- !5T ni/ersityni/ersity- '%r e8tendin0 the 'a)i*ities %' the S)h%%* t%&ards %r pr%(e)t and '%r her nstintin0 spp%rt.

7e e8press %r than,s t% %r Pr%0ra" Chair D$. R. Ma)<(#&a$ '%r his '%r his spp%rt thr%0h%t the )%rse %' this pr%(e)t.

7e a*s% ta,e this %pp%rtnity t% than, a** the 'a)*ty %' the S)h%%* '%r their spp%rt and their &isd%" i"parted t% s thr%0h%t the )%rse.

7e than, %r parents- 'a"i*y- and 'riends '%r +earin0 &ith s thr%0h%t the )%rse %' %r pr%(e)t and '%r the %pp%rtnity they pr%/ided pr%/ided s in nder0%in0 nder0%in0 this )%rse in s)h a presti0i%s institti%n.







CONTENTS

. 2. =. 4. ?.

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ABSTRACT The para**e* &a/e0ide )hara)teristi)s )hara)teristi)s and 'ie*d distri+ti%n distri+ti%n '%r di''erent di''erent "%des in an %pen ended para**e* &a/e0ide &hen the &a/e0ide is in the 'ree spa)e is )%"pted sin0 ; Para**e* p*ate &a/e0ide- ;
INTRODUCTION  &a/e0ide is a str)tre that 0ides &a/es- s)h as e*e)tr%"a0neti) &a/es %r &a/es %r s%nd s%nd &a/es. &a/es. They ena+*e a si0na* t% pr%pa0ate &ith "ini"a* *%ss %' ener0y +y restri)tin0 e8pansi%n e8pansi%n t% %ne di"ensi%n di"ensi%n %r t&%. This is a si"i*ar e''e)t t% &a/es %' &ater )%nstrained &ithin &ithin a )ana*- %r &hy 0ns ha/e +arre*s that restri)t h%t 0as e8pansi%n t% "a8i"i?e ener0y trans'er t% their +**ets. 7ith%t the physi)a* )%nstraint %' a &a/e0ide- si0na*s &i** typi)a**y dissipate a))%rdin0 t% the in/ers in/ersee s=ar s=aree *a& *a& as as they e8pand int% three di"ensi%na* spa)e. The 0e%"etry %' a &a/e0ide re'*e)ts its 'n)ti%n. S*a+ &a/e0ides )%n'ine ener0y t% tra/e* %n*y in %ne di"ensi%n- 'i+er %r )hanne* &a/e0ides '%r t&% di"ensi%ns. The 're=en)y %' the trans"itted &a/e a*s% di)tates the shape %' a &a/e0ide@ &a/e0ide@ an %pti)a* 'i+er 0idin0 0idin0 hi0h>'re=en)y hi0h> 're=en)y *i0ht *i0ht &i** &i** n%t 0ide 0ide "i)r%&a/es %' a ")h *%&er 're=en)y. s a r*e %' th"+th"+- the &idth %' a &a/e0ide needs needs t% +e %' the sa"e %rder %' "a0nitde as "a0nitde as the &a/e*en0th &a/e*en0th %' %' the 0ided &a/e.

PARALLEL PLATE WAVEGUIDE The para**e* p*ate &a/e0ide is the si"p*est type %' 0ide that )an spp%rt TM and TE "%desA it )an a*s% spp%rt a TEM "%de sin)e it is '%r"ed 'r%" t&% '*at )%nd)tin0 p*ates %r







5n the 0e%"etry %' the para**e* p*ate &a/e0ide %'
WAVEGUIDE MODES Transverse electromagnetc 3TEM 6 mo!es mo!es neither e*e)tri) n%r "a0neti) 'ie*d in the dire)ti%n %' pr%pa0ati%n. O

Transverse erse electrc electrc 3TE 6 mo!es mo!es n% e*e)tri) 'ie*d in the dire)ti%n %' pr%pa0ati%n. These are % Transv s%"eti" s%"eti"es es )a**ed )a**ed  H H modes’ +e)ase there is %n*y a "a0neti) 'ie*d a*%n0 the dire)ti%n %' pr%pa0ati%n  H is the )%n/enti%na* sy"+%* '%r "a0neti) 'ie*d. mo!es n% "a0neti) 'ie*d in the dire)ti%n %' pr%pa0ati%n. These are % Transverse magnetc 3TM 6 mo!es s%"eti" s%"eti"es es )a**ed )a**ed  E E modes’ +e)ase there is %n*y an e*e)tri) 'ie*d a*%n0 the dire)ti%n %' pr%pa0ati%n. mo!es n%n>?er% e*e)tri) and "a0neti) 'ie*ds in the dire)ti%n %' pr%pa0ati%n. % H"#r! mo!es









DERIVATION Transverse electrc 3TE6 3TE6 mo!es mo!es > the e*e)tri) 'ie*d is trans/erse t% the dire)ti%n %' pr%pa0ati%n n% *%n0itdina* e*e)tri) 'ie*d )%"p%nent &hi*e the "a0neti) 'ie*d has +%th trans/erse and *%n0itdina* )%"p%nents D E ?  - H - H z F F G.

TE and TM "%des are )%""%n*y re'erred t% as waveuide modes sin)e modes sin)e they are the %n*y "%des &hi)h )an e8ist in an en)*%sed 0idin0 0idin0 str)tre. str)tre. TE and TM "%des "%des are )hara)teri?ed +y a cutoff frequenc! +e*%& frequenc! +e*%& &hi)h they d% n%t pr%pa0ate. pr%pa0ate. TE and TM "%des "%des )an e8ist %n trans"issi%n *ines *ines +t are 0enera**y ndesira+*e. Trans"issi%n Trans"issi%n *ines are typi)a**y %perated at 're=en)ies +e*%& the )t%'' 're=en)ies %' TE and TM "%des s% that %n*y the TEM "%de e8ists. The trans/erse 'ie*ds %' TE "%des are '%nd +y si"p*i'yin0 the 0enera* 0ided &a/e e=ati%ns &ith E &ith E z   . The res*tin0 trans/erse 'ie*ds '%r TE "%des are

The )t%'' &a/en"+er " c "st +e n%n>?er% t% yie*d +%nded s%*ti%ns '%r the trans/erse 'ie*d )%"p%nents %' TE "%des. This "eans that &e "st %perate the 0idin0 str)tre a+%/e the )%rresp%ndin0 )t%'' 're=en)y '%r the parti)*ar parti)*ar TE "%de t% pr%pa0ate. 3%te that a** %' the trans/erse 'ie*d )%"p%nents %' the TE "%des )an +e deter"ined %n)e the sin0*e *%n0itdina* )%"p%nent  H z  is '%nd. The *%n0itdina* 'ie*d )%"p%nent H z "st "st satis'y the &a/e e=ati%n s% that







IMPLEMENTATION IMPLEMENTA TION IN HFSS . C$ C$eea1 a1ee a ')@ ')@

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FINITE CONDUCTIVITY

The 'inite )%nd)ti/ity +%ndary is se'* &hen "%de*in0 "eta* str)tres that are /ery thin +t sti** thi),er than a s,in depth. This +%ndary )an there'%re +e sed t% "%de* si0na* tra)es- 0r%nd 0r%nd p*anes- %r a radiatin0 radiatin0 e*e"ent. 5t a*s% a**%&s a ser t% spe)i'y the sr'a)e r%0hness %' the )%nd)tin0 %+(e)t that it is app*ied t%. This +%ndary is app*ied t% a sheet %+(e)t that &i** represent the : )%nd)t%r +t has +een dra&n as a 2 %+(e)t.

5n ;
7here Etan is the )%"p%nent %' the E>'ie*d that is tan0entia* t% the sr'a)e.







The 'inite )%nd)ti/ity )%nd)ti/ity +%ndary )%nditi%n )%nditi%n is /a*id %n*y i' the )%nd)t%r +ein0 "%de*ed is a 0%%d )%nd)t%rA that is- i' the )%nd)t%rs thi),ness is ")h *ar0er than the s,in depth in the 0i/en 're=en)y ran0e. 5' the )%nd)t%rs thi),ness is %n the %rder %' %r *ess than the s,in depth in the 0i/en 're=en)y ran0e- ;
=. Wa;e P) P)$1 $1







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SOLUTION SETUP

The s%*ti%n 're=en)y is sed +y ;








than the ser>spe)i'ied e*ta>S /a*e- the ana*ysis st%ps and is )%nsidered ) %nsidered )%n/er0ed. Or )%n/erse*ya0ain in e*e)tri) 'ie*d ter"s- %n)e the e*e)tri) 'ie*ds are n% *%n0er )han0in0 in the 0i/en "%de*- the 'ie*d s%*ti%n has )%n/er0ed and is )%rre)t.

?. F$e F$e#e #ec c  79ee 79ee







s%*ti s%*ti%n %n ti"e. ti"e. On)e On)e the “trans' “trans'er” er” 'n)ti 'n)ti%n %n has +een +een 0enerat 0enerateded- S>para" S>para"eter eter data data is rapid*y rapid*y )a*)*ated.

PLOTTING FIELD RESULTS . ELE ELECT CTRIC RIC FIELD FIELD MAGNIT MAGNITUDE UDE







=. MAGNET MAGNETIC IC FIELD FIELD MAGNIT MAGNITUDE UDE

4. MAGNET MAGNETIC IC FIELD FIELD VECT VECTOR OR







GRAPHICAL RESULTS RESULTS . PROPAG PROPAGAT ATION ION CONSTA CONSTANT NT ;7 FREUENCY FREUENCY 55Ghz

HFSSDesign1

ANSOFT

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CONCLUSION  para**e*- Cir)*ar- e**ipti)a* and h%**%&- Meta**i) &a/e0ides spp%rts %n*y TE and TM "%des +t TEM &a/es d%nt e8ist in a sin0*e>)%nd)t%r h%**%& &a/e 0ide +e)ase TEM &a/es are )hara)teri?ed +y E?- ;? and '). T% spp%rt a** TEM "%des '%r a TEM &a/e t&% separate )%nd)t%r str)tre is re=ired- s)h as C%>a8ia* )a+*e- Para**e* p*ate &a/e0ide- Strip *ine and "i)r% strip *ines. The t&% )%nd)t%r *ines )an +e ana*y?ed in ter"s %' /%*ta0e- )rrent and i"pedan)e +y the distri+ted )ir)it the%ry. The "eth%d%*%0y app*ied t% deri/e 'ie*d e=ati%ns )an +e e8tended t% %ther &a/e0ides a*s%. O+tained e=ati%ns and C%"pter Si"*ati%n res*ts )an +e )%"pared t% nderstand the 'ie*d *ines and the Pr%pa0ati%n )hara)teristi)s.

REFERENCES 1.

3.Ma 3.Mar) r)/ /it it?? “Wa;e>#*!e Ha!'))( The institti%n %' E*e)tri)a* En0ineers. e)>19$

2.

a/id.#.Chen0 /F*e"! a! Wa;e E"ec1$)&a>e1*c7 2nd Ed- 26 Tsin0ha ni/ersity

:. nnaprna as-Ssir # as /M*c$)9a;e E>*ee$*> / M)>Nra&hi** ;E- Sept 26. 4. C%nstantine  Ba*anis /A!;ace! E>*ee$*> E"ec1$)&a>e1*c7 J%hn 7i*ey and S%ns

Parallel Plate Waveguides Using Hfss

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