DESIGN A FSS USING JERUSALEM CROSS STRUCTURE AS A BSF FOR SATELLITE APPLICATIONS AT 10GHz

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1 IJARII-ISSN(O) DSIGN A FSS USING JRUSALM CROSS STRUCTUR AS A BSF FOR SATLLIT APPLICATIONS AT 10GHz Rami Kii 1, Geea 2, Rakhi Pahak 3 1 C Suden, Apex Insiue of Technology, Rampu, Ua-Padesh, India 2, 3 Assisan Pofesso, Apex Insiue of Technology, Rampu, Ua Padesh, India ABSTRACT In his pape we pesen how o design FSS as a Band Pass File (BPF) o Band Sop File (BSF). File is used o pass he desied fequency and block he undesied fequency. FSS sand fo Fequency selecive suface have a popey ha i eflecs plane wave in-phase and suppess he suface waves. FSS can be used as a file, efleco, polaize, absobe, ec. Hee we designed FSS which is acs as a Band Sop file, which opeae a 10GHz esonan fequency. This ype of file can be used fo saellie applicaions, ada and biomedical. Fo he analysis of band sop file ansmission and eflecion coefficien can be obained wih he help of Ansof Designe ool. This ype of file design can impoves he ceain paamees like VSWR, gain, efficiency, eun loss in anenna. Keywod: - Peiodic Sucue, Files, FSS, and Ansof Designe 4.0 ec. 1. INTRODUCTION Peiodic sucues is an assembly of elemen which ae idenical ae aanged in su ch a manne ha i ceae one dimensional o wo dimensional aay. Peiodic aay can be excied by he wo mehods, (1) By an inciden plane wave, (2) individual geneao conneced o each elemen. FSS has a popey ha i eflecs plane wave in phas e and suppess he suface wave. FSS have been used in adio fequency egion of M specum, can be used as a efleco, polaize, absobe, file, ec. Hee we ae used FSS as a file. The advanage of using double dipole FSS is ha educe he size of anenna, by eplacing file and applicaion as divese he afoemenioned micowave oven, anenna and moden mea maeials. A file is a device ha passes elecic signals a ceain fequencies o fequency anges while pevening he passage of ohes. File cicuis ae used in a wide vaiey of applicaions. In he field of elecommunicaion, bandpass files ae used in he audio fequency ange (0 khz o 20 khz) fo modems and speech pocessing. In ou wok, peiodic sucue is used as band sop file. Hee he oldes elemen Jeusalem coss sucue is sandwich beween he wo dielecic. All he simulaion have been pefom using Ansof Designe ool Theoy of Peiodic Sucue Peiodic sucue ae easy o undesand difficul o design, because if we simply change he fequency fo diffeen applicaion. We have o deal wih he vaiaion of angle of incidence and polaizaion. Angle of incidence of he peiodic sucue is invesely popoional o he bandwidh. When he fequency changes, ansmission and eflecion cuve will also changes. In case of passive aay, he inciden plane wave will paially ansmied in he fowad diecion ( ) and paly efleced in evese diecion ( ). Unde esonance condiion, gaing lobes will be zeo. 1.2 Design quaions

2 IJARII-ISSN(O) Unde esonan condiion and fo no gaing lobes he ampliude of he efleced signal may equal is cusomay o define he specula eflecion coefficien as Whee as and i while =0. I in geneal ae efeed o he plane of he aay. Similaly he ansmission coefficien is defined T Lengh of dipole is given by L,. And he gapping beween wo dipole g Uni cell of FSS using Jeusalem Coss sucue i = 0.4 c f, c is speed of ligh. Fig -1: Fon view of FSS laye using Jeusalem Coss Uni cell of FSS using Jeusalem coss sucue on Ansof Designe. In designing of Jeusalem coss FSS sucue wo hoizonal and veical I secion ae used. FSS has hee laye sucue, means he conducing shee which is excied by plane wave exciaion is sandwich beween he wo dielecic maeial has dielecic consan d 1 and d 2 =2.2. As we know in Band Sop file, a micowave file is a wo-po newok which is used o conol he fequency esponse a a ceain poin. Hee maximum ansmission in pass band and maximum aenuaion in sop band. All he cuves ae shown a 45 angle of incidence fo ohogonal and paallel polaizaion, which esonan fequency aound 10GHz =2.2 dielecic slab placed on boh side. Dielecic maeial of file d1 laye and d 2 laye is used. As we know he analysis of FSS is based on Tansmission coefficien ( S ) and Reflecion coefficien ( S ). A he esonan fequency he value of ansmission coefficien is made lage in negaive and he value of eflecion

3 IJARII-ISSN(O) coefficien be in he ange of 0 o 1. In band sop file absopion is 90% and he ansmission is 10% a he esonan fequency. 2.1 Simulaion On he basis of mahemaical calculaions and fom he heoy of FSS model we ceae a double I secion among many of designs of FSS i.e. Jeusalem coss. Hee he lengh and widh of he double I secions can be calculaed as by he given fomulae: Lengh of dipole is given by L, 2 4 c Whee, and c is speed of ligh, and f is opeaing fequency. f Hee we can easily analyze he band sop chaaceisics of band sop file as he dip occus almos equal o he cene fequency, whee he ansmission and eflecion coefficien value can be calculaed. The wo layes ae used of diffeen widh which ae one is ace wih 40mil hickness and uppe elevaion is of cm and, ohe one is ace of coppe whose ype is signal and of 0mil hick, 20mil lowe elevaion and 20mil uppe elevaion. 2.2 Paameic sudy and esul obained Fig -2: 3D View of FSS laye using Jeusalem Coss ac as a BSF Paameic sudy afe calculaing by he help of fomulae and design implemenaion is given is he fom o f able as: Hee Lengh d is he lengh of FSS laye and widh d is id widh of FSS laye. And he oal lengh and widh is 2.12cm. The infinie aay seup is given a hea=45 and phi=90. Table -1: Paameic Sudy S. no Paamee Value Co-odinaes 1 Lengh d 2.12cm Cene(-1.06,0) 2 Widh d 0.13cm Cene(0,-0.65) 3 Plane wave exciaion Thea=45, phi=90 4 Lengh 2.12cm 5 Widh 2.12cm 6 Dielecic 1 RT Douoid 5880m (2.2) 7 Dielecic 2 RT Douoid 5880m (2.2) 8 Tansmission coefficien (T) Reflecion coefficien ( )

4 IJARII-ISSN(O) RSULTS The plo shown in figue is a plo beween ansmission and eflecion coefficien vesus fequency. Fo he band sop file he eflecion coefficien is nealy zeo which shows he pefec aenuaion is obained and he ansmission coefficien which shows ha a his poin ansmission is minimum. The obained eflecion coefficien in his simulaion is a esonan fequency of 10GHz and he ansmission coefficien is given as which shows he pefec impedance maching a ha poin. Fig -3: Tansmission and Reflecion coefficien plo This is he gaph of ansmission coefficien and eflecion coefficien. The esonan fequency is 10GHz and we know bandwidh = fh fl, i means 6GHz opeaing bandwidh. 4. CONCLUSIONS In his pape, we descibe he designing pocedue of FSS using Jeusalem coss sucue, ha can be used as a Band Sop file a 10GHz esonan fequency. This is used fo X-Band applicaions like biomedical and saellie applicaion. The analysis of ansmission and eflecion coefficien is made by Ansof Designe. This ype of file can be used o impove ceain paamee of anenna like anenna Gain, VSWR, Reun loss and fficiency. If we change he angle of incidence he bandwidh of file will change. FSS can be used as subsae o supesae o impove he esul of anenna can design of file be miniauized. 5. ACKNOWLDGMNT The auhos like o expess hei special hanks o Ms. Geea (Assisan Pofesso, C Depamen) and also hanks o he depamen of leconics and Communicaion ngineeing of Apex Insiue of Technology, Rampu fo hei coninuous suppo and encouagemen duing his wok. 6. RFRNCS [1]. Vahldieck, R. and W. J. R. Hoefe, Finline and meal inse files wih impoved passband sepaaion and inceased sop band aenuaion, I Tans. on Micowave Theoy and Tech., Vol. 33, No. 12, , Decembe [2]. Ku-Band Coupled-Line Bandpass File fo Saellie Applicaions Inenaional Jounal of meging Technology and Advanced ngineeing Volume 4, Special Issue 1, Febuay 2014 [3]. Analysis and design of muliple-band bandsop files Han S. H., Wang X. L., and Fan Y. Pogess In lecomagneics Reseach, PIR 70, ,

5 IJARII-ISSN(O) [4]. Analysis and Design of Muli-Band Bandsop File Ami Joshi¹ and Deepak Bhaia², Inenaional Jounal of leconic and lecical ngineeing. ISSN , Volume 7, Numbe 6 (2014), pp [5]. Chiou, H.-K.; Tai, C.-F., "Dual-band micosip bandsop file using dualmode loop esonao," leconics Lees, vol.45, no.10, pp , May 7, [6]. A. Gou, C. Kapuz,. Gunukun, M. Uhan, A.K. Gou,, "Design of micosip bandsop file wih adjusable wide passband using folded open cicuied sub esonaos", Asia- Pacific Micowave Confeence, Singapoe, 2009, pp [7]. Jia-Sheng Hong, "Micosip dual-mode band ejec file", 2005 I MTT-S In. Micowave Symp. Dig., vol., no., pp.4. [8]. Snyde, R.V.; Sanghoon Shin;, "Bandsop files using dielecic loaded evanescen mode esonaos," Micowave Symposium Diges, 2004 I MTT-S Inenaional, vol.2, no., pp Vol.2. [9]. Xu, J.; Miao, C.; Cui, L.; Ji, Y.-X.; Wu, W.; "Compac high isolaion quadband bandpass file using quad-mode esonao," leconics Lees, vol.48, no.1, pp.28-30, Januay [10]. Jian-Kang Xiao; Xiao-Peng Zu; Hui-fen Huang; Wei-Li Dai;, "Muli-mode bandsop file using defeced equilaeal iangula pach esonao," Anennas Popagaion and M Theoy (ISAP), h Inena ional Symposium on, vol., no., pp [11]. Chen, J., C.-H. Liang, J.-Z. Chen, and B. Wu, Analyical design of iple passband of micowave files using fequency ansfomaions mehod," Micowave and Opical Technology Lees, Vol. 53, No. 10, , Oc [12]. Wang, C., P. Xu, B. Li, and Z.-H. Yan, A compac and muliband anenna fo WLAN and WiMAX applicaions," Micowave and Opical Technology Lees and MC Technologies fo Wieless Communicaions, Vol. 53, No. 9, , Sep [13]. Lung, C.-K., K.-S. Chin, and J. S. Fu, Ti-secion Sepp ed-imp edance esonaos fo design of dual-band bandsop file," Poceedings of 39 h uopean Micowave Confeence, , Sep [14]. Haiwen Liu, Membe, I, Baoping Ren, Xuehui Guan, Membe, I, Jiuhuai Lei, and Shen Li, Compac Dual-Band Bandpass File Using Quaduple-Mode Squae Ring Loaded Resonao (SRLR) I micowave and wieless componens lees, vol. 23, no. 4, apil [15]. Levy, R., R. V. Snyde, and S. Sanghoon, \Bandsop files wih exended uppe passbands," I Tans. Micowave Theoy and Tech., Vol. 54, No. 6, , Jun [16]. Rambabu, K., M. Y. W. Chia, K. M. Chan, e al., \Design of muliple-sopband les fo inefeence suppession in UWB applicaions," I Tans. Micowave Theoy and Tech., Vol. 54, No. 8, , [17]. Amai, S. and U. Rosenbeg, \Diec synhesis of a new class of bandsop les," I Tans. Micowave Theoy and Tech., 306 Han, Wang, and Fan Vol. 52, No. 2, , Feb [18]. Amai, S., U. Rosenbeg, and R. B. Wu, \In-line pseudo ellipic band-ejec files wih non-esonaing nodes and/o phase shifs," I Tans. Micowave Theoy and Tech., Vol. 54, No. 1, , Jan BIOGRAPHIS Rami Kii Saan: Pesenly sudying B.Tech degee in Depamen of C, unde APJ Abdul Kalam Technical Univesiy a Apex Insiue of Technology, Rampu, Ua-Padesh, India. His aea of inees is signal sysems and Micowave communicaions. He has published Thee Papes in Inenaional Jounal. Ms. Geea: She is M.Tech by Qualificaion and cuenly woking as Assisan Pofesso cum Coodinao a Apex Insiue of Technology, Rampu, Ua-Padesh, He aea of inees is micowave, anenna designing and ada sysem. She has published Fou Papes in Inenaional Jounals. She has Pesened eseach pape wo naional confeences. Ms. Rakhi Pahak: She is M.Tech by Qualificaion and cuenly woking as Assisan Pofesso cum Coodinao a Apex Insiue of Technology, Rampu, Ua-Padesh, He aea of inees is micopocesso and Signal and sysems. She has published eseach papes naional confeence 2 eview papes