Compact CP Feed Broadband Microstrip Patch Antenna for Wireless Applications

Transcription

1 IOSR Jounal of Electonics and Communication Engineeing (IOSR-JECE) e-issn: ,p- ISSN: Volume 9, Issue 1, Ve. II (Jan. 2014), PP Compact CP Feed Boadband Micostip Patch Antenna fo Wieless Applications 1 Vivek Singh Ratho, 2 J.P.Saini 1 Reseach Schola, MEWAR Univesity, Rajasthan, India 2 Pincipal, Madan Mohan Malviya Engineeing College, Goakhpu (U.P), India Abstact: This pape pesents a vey small size micostip patch antenna Suitable fo WLAN and Wi MAX application. The adiating element of the poposed antenna consists of Kite symbol patch using dielectic substate 4.2, loss tangent.0012 and having the same substate height 1.6mm.The compact size antenna of dimension(14m x 18.6mm x 1.6mm)employed single laye coaxial pobe feed. The compute simulation esults show that the antenna can ealize wide band chaacteistics. Poposed antenna coves 3.189GHZ 4.601GHZ achieving 36.2% of impedance bandwidth in one band and othe band anges fom 4.655GHZ-8.29GHZ (impedance bandwidth of %). Keywods: Micostip antenna, wide band, kite shape, IE3D. I. Intoduction: The demand fo small antennas in wieless communication in ecent yeas has inceased the inteest of eseaches on compact micostip antenna design among micowaves and wieless enginees. the explosive gowth of wieless system and booming demand fo a vaiety of new wieless application, it become impotant to design wideband and high gain antennas to cove a wide fequency ange Fo a wieless telecommunication device, a small and light weight antenna is likely to be pefeed. Fo this pupose small size, light weight Compact Micostip antenna is one of the most suitable antenna. [3] Micostip patch antennas ae popula fo thei well-known attactive featues of low pofile, light weight, and compatibility with monolithic micowave integated cicuits (MMICs). The main disadvantage of this micostip antenna naow bandwidth, which is due to the esonant natue of the patch stuctue.[4] Conventional micostip antennas in geneal have a conducting patch pinted on a gounded micowave substate, and have the attactive featues of low pofile, light weight, easy fabication, and confomability to mounting hosts.[1] Howeve, conventional micostip patch antenna suffes fom vey naow bandwidth, typically about 5% bandwidth with espect to the cente fequency. This poses a design challenge fo the micostip antenna designe to meet the boadband techniques [3] Wieless local aea netwok (WLAN) came into pictue because of its high data tansmission ate and has wide ange of applications in moden electonic communication systems, such as desktop computes, mobile phones, pesonal digital assistants, etc. Fo these applications, compact micostip antennas fo WLAN opeation have been equied ecently [7] So we want a antenna which offes a low pofile, wide bandwidth, high gain and compact antenna element. Among these standads, the following fequency bands can be mentioned: (1) PCS-1900 equies a band of GHz; (2) IEEE b/g equies a band of GHz; (3) IEEE a equies a band of GHz and an additional band of GHz; (4) HipeLAN2 equies a band of GHz besides the band of GHz.[2,6,7,12] To ovecome the above poblem, a micostip antenna stuctue with a typical Kite symbol shaped patch is poposed which exhibits good impedance bandwidth in two bands of 36.2% and % which is suitable fo Wi-MAX and WLAN (uppe band application). II. Antenna Design The dielectic constant of the substate is closely elated to the size and the bandwidth of the micostip antenna. Low dielectic constant of the substate poduces lage bandwidth, The esonant fequency of micostip antenna and the size of the adiation patch can be simila to the following fomulas while the high dielectic constant of the substate esults in smalle size of antenna [1].The Length of gound plane of Antenna is 24 mm and Width is 28.2 mm, L & W of the patch is 14 mm & 18.6 mm. The patch width, ective dielectic constant, the length extension and also patch length ae given by 54 Page

2 W c (1) 2 f whee c is the velocity of light, is the dielectic constant of substate, f is the antenna woking fequency, W is the patch non esonant width, and the ective dielectic constant is 1 1 H (2) W 1 given as, The extension length is calculates as, L H W H W H (3) By using above equation we can find the value of actual length of the patch as, c L 2L (4) 2 f Figue 1. Top view of the micostip patch antenna III. Simulated Results In this pape a wideband micostip antenna with compact size is pesented which gives two bands of bandwidth of 36.2% and %. These bandwidths cove the fequency bands of Wi-MAX and WLAN (uppe band) application. Figue 2 shows the etun loss gaph of micostip antenna depicting the multi esonant points. Figue3 shows the gaph of VSWR which should be less than 2.Fig 4 shows the smith chat of the poposed design. Figue 5 shows 3D adiation patten and Figue 7 shows the Efficiency Vs Fequency cuve which shows a high antenna iciency of about 90% and adiating iciency of about 95% Fig 8 shows the gain v/s fequency in which the max gain is aound 4 dbi and Maximum Diectivity of 6.5 dbi. Figue 2. Retun loss plot of the micostip patch antenna 55 Page

3 Figue 3. VSWR plot of the micostip patch antenna. Figue 4. Smith chat of the micostip patch antenna. Figue 5. 3D Radiation patten plot of the micostip patch antenna Figue 6. Axial atio of the micostip patch antenna Figue 7. Efficiency plot of the micostip patch antenna 56 Page

4 Figue 8. Maximum gain plot of micostip patch antenna Figue 9. Design of the micostip patch antenna on IE3D Figue 10. Diectivity plot of micostip patch antenna. IV. Conclusion: In this pape a compact size micostip antenna has been designed having good impedance matching as well as high antenna iciency of about of about 90% is achieved. The poposed antenna have lage impedance bandwidth of 36.2% and % coveing the fequency ange fom.189ghz 4.601GHZ and 4.655GHZ- 8.29GHZ which is suitable fo Wi-MAX and WLAN (uppe band application). Refeences: [1] M. Abbaspou and H. R. Hassani Wideband sta-shaped micostip patch antenna Pogess In Electomagnetics Reseach Lettes, Vol. 1, 61 68, 2008 [2] W. Ren Compact dual-band slot antenna fo 2.4/5ghz wlan applications Pogess In Electomagnetics Reseach B, Vol. 8, , 2008 [3] M. T. Islam,M. N. Shakib and N. Misan Design analysis of high gain wideband L-pobe fed micostip patch antenna Pogess In Electomagnetics Reseach, PIER 95, , 2009 [4] S. Maci and G. BifJi Gentili Dual-Fequency Patch Antennas IEEE Antennas and Popagation Magazine, Vol. 39, No. 6, Decembe 1997 [5] ZAAKRI Safa, ZENKOUAR Lahbib Conception of Bi-band Rectangula Micostip Aay Antenna Jounal of Micowaves, Optoelectonics and Electomagnetic Applications, Vol. 12, No. 1, June 2013 [6] Xiaofei Shi, Zhihong Wang, Hua Su, Yun Zhao, A H-type Micostip Slot Antenna in Ku-band Using LTCC Technology with Multiple Laye Substates, Poc. IEEE, Vol , pp , [7] U. Chakaboty, S. Chattejee, S. K. Chowdhuy, P. P. Saka A compact micostip patch antenna fo wieless communication Pogess In Electomagnetics Reseach C, Vol. 18, , Page

5 [8] H. Sabi and Z. Atlasbaf Two novel compact tiple band micostip annula-ing slot antenna fo PCS-1900 and WLAN applications. Pogess In Electomagnetics Reseach Lettes, Vol. 5, 87 98, 2008 [9] Ramadan, A., K. Y. Kabalan, A. El-Hajj, S. Khouy, and M. Al-usseini, A econfiguable U-Koch micostip antenna fo wieless applications," Pogess In Electomagnetics Reseach, PIER 93, , [10] Kawei Qian and Xiaohong Tang, Compact LTCC dual-band ciculaly polaized petubed hexagonal micostip antenna, IEEE Antennas and Wieless Popagation Lettes, Vol. 10 pp , 2011 [11] K. Kuma and N. Gunasekaan, A novel wideband slotted mm wave micostip patch antenna, Poc. IEEE Vol pp , [12] D. Xi, L. H. Wen, Y. Z. Yin, Z. Zhang, and Y. N. Mo A Compact dual inveted C Shaped slots antenna fo WLAN application Pogess In Electomagnetics Reseach Lettes, Vol. 17, , 2010 [13] M. T. Islam, M. N. Shakib and N. Misan, Boadband E-H shaped micostip patch antenna fo wieless systems, Pogess In Electomagnetics Reseach, PIER 98, , [14] Kasabegouda, V. G. and K. J. Vinoy, A boadband suspended micostip antenna fo cicula polaization," Pogess In Electomagnetics Reseach, PIER 90, , [15] Alloyed, M. N. Kamjani, and M. Shobeyi, A novel coss-slot geomety to impove impedance bandwidth of micostip antennas," Pogess In Electomagnetics Reseach Lettes, Vol. 4, 63-72, [16] G. M. Zhang, J. S. Hong and B. Z. Wang, Two novel band-notched UWB slot antennas fed by micostip line, Pogess In Electomagnetics Reseach, PIER 78, , [17] Yu, A. and X. X. Zhang, A method to enhance the bandwidth of micostip antennas using a modified E-shaped patch, Poceedings of Radio and Wieless Confeence, , Aug , [18] D. M. Poza, Micostip Antennas, Poc. IEEE, vol. 80, No. 1, pp , Januay [19] Ram Singh Kushwaha, D.K.Sivastava, J.P.Saini Compact Tiple Band Slotted Micostip Patch Antenna Intenational Jounal of Engineeing Science and Technology (IJEST), Vol. 4 No.03, Mach [20] K.Shambavi, Gain and Bandwidth Enhancement Technique in Squae Micostip Antenna fo WLAN application, Asia-Pacific Micowave Confeence 2007, pp [21] C.A. Balanis, Antenna theoy, John Wiley, 1982, pp [22] Bahl, I.J. and Bhaatia, P. Micostip Antennas, Atech House, [23] Giish Kuma & K.P.Ray Boad Band Micostip Antenna, Atech House, USA, 2003, Chapte 1, pp.1-21 AUTHOR PROFILES: Bon on 24 th of Aug 1969, E. Vivek Singh Ratho has completed his bachelo degee in Electonics fom enowned Nagpu Univesity, Mahaashta, India, and then he eaned his Maste degee in the aea of System Engineeing fom DayalBagh Univesity AGRA. He is having vital expeience of aound 16 yeas in the field of Academics and Reseach. Bon on 26th of June 1966, Pof. J.P. Saini has completed his bachelo degee in Electonics and communication fom enowned KNIT Sultanpu (UP) India, and then he eaned his Maste degee fom IIT, Kanpu, (UP) India and Ph.D. in Electonics Engineeing fom D. RML Avadh Univesity, Faizabad. He is having total 129 eseach papes published efeed national & intenational jounals and confeences. Pesently, he is woking as Pincipal, Madan Mohan Malaviya Engineeing College, Goakhpu. 58 Page