Abstract




 
   

IJE TRANSACTIONS A: Basics Vol. 27, No. 10 (October 2014) 1573-1580   

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  COMPARATIVE INVESTIGATION OF HALF-MODE SIW CAVITY AND MICROSTRIP HYBRID ANTENNA USING DIFFERENT PATCH SHAPES
 
H. Dashti and M. H. Neshati
 
( Received: March 05, 2014 – Accepted: May 22, 2014 )
 
 

Abstract    A set of hybrid microstrip patch and semi-circular cavity antennas is introduced. The semi-circular cavity is implemented using Half-mode Substrate Integrated Waveguide (HMSIW) technique. Different shapes of patch include rectangular, semi-circular and equilateral triangular are excited using proximity effect by the circular SIW cavity at its TM010 mode of operation. The whole structures have been excited using an inset microstrip line that leads to facility of planar circuit integration. The inherent limited bandwidth of the conventional microstrip patch antenna and SIW cavity-backed slot antenna is improved about 6% to 9.5% depending on the type of the patch using the proposed structure. Additionally, the proposed hybrid antenna enhances the antenna gain by about 1.5 dB. Meanwhile, the proposed hybrid antennas are made on a single-layer substrate has a low fabrication cost using printed circuit board (PCB) process. Three hybrid antennas are numerically and experimentally investigated. A comparative study between the three different structures contains gain, bandwidth, cross polarization level (CPL) and Front to Back Ratio (FTBR) is presented.

 

Keywords    Hybrid antenna, microstrip patch, SIW cavity

 

چکیده    در این مقاله یک مجموعه از آنتن­های ترکیبی شامل محفظه نیم دایره­ای با فناوری موجبر مجنمع شده در زیر لایه و پچ مایکرواستریپ معرفی شده است. محفظه نیم دایره­ای توسط فناوری موجبر مجتمع شده در زیر لایه نیم مود (HMSIW) پیاده­سازی شده است. شکل­های مختلف از پچ شامل مستطیلی، نیم دایره ای و مثلثی متساوی الاضلاع با استفاده از اثر مجاورت توسط حفره SIW دایروی در مود کاری TM010، تحریک شده­اند. کل ساختار توسط یک خط مایکرواستریپ تحریک شده که این امر مجتمع شدن ساختار با مدارهای مسطح را تسهیل می­کند. محدودیت ذاتی پهنای باند آنتن­های پچ مایکرواستریپ و شکاف­های تحت حمایت حفره SIW حدود 6% تا 5/9% بسته به نوع پچ به­کار رفته، بهبود می­یابد. بعلاوه، آنتن ترکیبی پیشنهادی حدود dB 5/1 بهره را افزایش داده است. در حالی­که آنتن ترکیبی پیشنهادی با هزینه ساخت کم توسط فرآیند برد مدار چاپی (PCB) روی یک زیر لایه ساخته شده است. سه آنتن ترکیبی به صورت عددی و تجربی بررسی شده­اند. یک مقایسه بین این ساختارها از نظر بهره، پهنای باند، سطح قطبش مخالف و مقدار FTBR ارائه شده است.

References   

 

1.        Balanis, C.A., "Antenna theory: Analysis and design, John Wiley & Sons,  (2012).

2.        Fakharian, M., Rezaei, P., Azadi, A. and Dadras, M., "A capacitive fed microstrip patch antenna with air gap for wideband applications", International Journal of Engineering, Transactions A: Basics  Vol. 27, No. 5, (2014).

3.        Garg, E.R., "Investigation on microstrip patch fractal antenna", International Journal of Engineering, Transactions A: Basics Vol. 25, No. 1, (2012), 39-44.

4.        Hirokawa, J., Arai, H. and Goto, N., "Cavity-backed wide slot antenna", in IEE Proceedings H (Microwaves, Antennas and Propagation), IET. Vol. 136, (1989), 29-33.

5.        Liu, Y., Shen, Z. and Law, C.L., "A compact dual-band cavity-backed slot antenna", Antennas and Wireless Propagation Letters, IEEE,  Vol. 5, No. 1, (2006), 4-6.

6.        Hong, W., Behdad, N. and Sarabandi, K., "Size reduction of cavity-backed slot antennas", Antennas and Propagation, IEEE Transactions on,  Vol. 54, No. 5, (2006), 1461-1466.

7.        Xu, F. and Wu, K., "Guided-wave and leakage characteristics of substrate integrated waveguide", Microwave Theory and Techniques, IEEE Transactions on,  Vol. 53, No. 1, (2005), 66-73.

8.        Deslandes, D. and Wu, K., "Single-substrate integration technique of planar circuits and waveguide filters", Microwave Theory and Techniques, IEEE Transactions on,  Vol. 51, No. 2, (2003), 593-596.

9.        Luo, G.Q., Hu, Z.F., Dong, L.X. and Sun, L.L., "Planar slot antenna backed by substrate integrated waveguide cavity", Antennas and Wireless Propagation Letters, IEEE,  Vol. 7, (2008), 236-239.

10.     Luo, G.Q., Hu, Z.F., Liang, Y., Yu, L.Y. and Sun, L.L., "Development of low profile cavity backed crossed slot antennas for planar integration", Antennas and Propagation, IEEE Transactions on,  Vol. 57, No. 10, (2009), 2972-2979.

11.     Razavi, S.A. and Neshati, M.H., "Development of a linearly polarized cavity-backed antenna using hmsiw technique", Antennas and Wireless Propagation Letters, IEEE,  Vol. 11, (2012), 1307-1310.

12.     Luo, G.Q., Hu, Z.F., Li, W.J., Zhang, X.H., Sun, L.L. and Zheng, J.F., "Bandwidth-enhanced low-profile cavity-backed slot antenna by using hybrid siw cavity modes", Antennas and Propagation, IEEE Transactions on,  Vol. 60, No. 4, (2012), 1698-1704.

13.     Gong, K., Chen, Z.N., Qing, X., Chen, P. and Hong, W., "Substrate integrated waveguide cavity-backed wide slot antenna for 60-ghz bands", Antennas and Propagation, IEEE Transactions on,  Vol. 60, No. 12, (2012), 6023-6026.

14.     Yun, S., Kim, D.-Y. and Nam, S., "Bandwidth enhancement of cavity-backed slot antenna using a via-hole above the slot", Antennas and Wireless Propagation Letters, IEEE,  Vol. 11, (2012), 1092-1095.

15.     Karmakar, N.C., "Investigations into a cavity-backed circular-patch antenna", Antennas and Propagation, IEEE Transactions on,  Vol. 50, No. 12, (2002), 1706-1715.

16.     Awida, M.H. and Fathy, A.E., "Substrate-integrated waveguide ku-band cavity-backed 22 microstrip patch array antenna", Antennas and Wireless Propagation Letters, IEEE,  Vol. 8, (2009), 1054-1056.

17.     Awida, M.H., Suleiman, S.H. and Fathy, A.E., "Substrate-integrated cavity-backed patch arrays: A low-cost approach for bandwidth enhancement", Antennas and Propagation, IEEE Transactions on,  Vol. 59, No. 4, (2011), 1155-1163.

18.     Yang, W. and Zhou, J., "Wideband low-profile substrate integrated waveguide cavity-backed e-shaped patch antenna", IEEE Antennas and Wireless Propagation Letters, Vol. 12, (2013), 143-146.

19.     Dashti, H. and Neshati, M.H., "New hybrid microstrip patch antenna fed by half-mode substrate integrated waveguide cavity", (2014).

20.     Fakharian, M. and Rezaei, P., "Parametric study of uc-pbg structure in terms of simultaneous amc and ebg properties and its applications in proximity-coupled fractal patch antenna", International Journal of Engineering-Transactions A: Basics,  Vol. 25, No. 4, (2012), 347-354.

21.     Jin, C., Li, R., Alphones, A. and Bao, X., "Quarter-mode substrate integrated waveguide and its application to antennas design", Antennas and Propagation, IEEE Transactions on,  Vol. 61, No. 6, (2013), 2921-2928.

22.     Pozar, D.M., Microwave engineering, ch. 8. , 2nd Edition, , Wiley, New York. (1998)

Garg, R., "Microstrip antenna design handbook, Artech House,  (2001)                                                  .





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