Compact Broadside Coupled Directional Coupler Based on Coplanar CRLH Waveguides

References

• Mongia , R. , Bahl , I. and Bhartia , P. 1999 . RF and Microwave Couplerline Circuits , Norwood , MA : Artech House .
   Google Scholar
• Caloz , C. and Itoh , T. Jun. 2003 . “ Novel microwave devices and structures based on the transmission line approach of meta-materials ” . In Proc. IEEE MTT-S Int. Microwave Symp. Dig Jun. , 195 – 198 .
   Google Scholar
• Chen , H. , Wu , B. I. and Kong , J. A. 2006 . Review of electromagnetic theory in left-handed materials . Journal of Electromagnetic Waves and Applications , 20 ( No. 15 ) : 2137 – 2151 .
   Web of Science ®Google Scholar
• Hu , H. , Zhang , A. X. , Jiang , Y. S. and Xu , Z. Mar. 2008 . “ Compact filter with good performance based on super-compact multilayered lefthanded transmission line ” . In Proc. Progress In Electromagnetics Research Symposium Mar. , 608 – 610 .
   Google Scholar
• Wu , G. L. , Mu , W. , Dai , X. W. and Jiao , Y. C. 2008 . Design of novel dual-band bandpass filter with microstrip meanderloop resonator and CSRR DGS . Progress In Electromagnetics Research , PIER 78 : 17 – 24 .
   Web of Science ®Google Scholar
• Xu , Z. X. and Lin , W. G. 2007 . Controllable absorbing structure of metamaterial at microwave . Progress In Electromagnetics Research , PIER 69 : 117 – 125 .
   Google Scholar
• Abdalla , M. A. and Hu , Z. 2008 . On the study of left-handed coplanar waveguide coupler on ferrite substrate . Progress In Electromagnetics Research Letters , 1 : 69 – 75 .
   Google Scholar
• Hu , T. C. and Ma , W. Mar. 2008 . “ Theoretical analysis of composite right left-handed coupled transmission line resonators ” . In Proc. Progress In Electromagnetics Research Symposium Mar. , 345 – 349 .
   Google Scholar
• Lin , X. Q. , Cheng , Q. , Liu , R. P. , Bao , D. and Cui , T. J. 2007 . Compact resonator filters and power dividers designed with simplified metastructures . Journal of Electromagnetic Waves and Applications , 21 ( 12 ) : 1663 – 1672 .
   Web of Science ®Google Scholar
• He , J. , Wang , B. Z. and Zhang , K. H. 2008 . Arbitrary dualband coupler using accurate model of composite right/left handed transmission line . Journal of Electromagnetic Waves and Applications , 22 ( No. 8–9 ) : 1267 – 1272 .
   Google Scholar
• Xiao , Z. Y. and ang , Z. H. W . 2008 . Broad stopband microstrip bandpass filter with metamaterial substrates of fractal cantor distribution . Journal of Electromagnetic Waves and Applications , 22 ( No. 5–6 ) : 715 – 722 .
   Google Scholar
• Caloz , C. and Itoh , T. 2004 . A novel mixed conventional microstrip and composite right/left-handed backward-wave directional coupler with broadband and tight coupling characteristics . IEEE Microwave Wireless Components Lett. , 14 Jan. : 31 – 33 .
   Google Scholar
• Caloz , C. , Sanada , A. and Itoh , T. 2004 . A novel composite right/lefthanded coupled-line directional coupler with arbitrary coupling level and broad bandwidth . IEEE Trans. Microwave Theory Tech. , 52 Mar. : 980 – 992 .
   Web of Science ®Google Scholar
• Niu , J. X. and Zhou , X. L. 2007 . Analysis of balanced composite right left handed structure based on different dimensions of complementary split ring resonators . Progress In Electromagnetics Research , PIER 74 : 341 – 351 .
   Web of Science ®Google Scholar
• Liu , K. Y. , Li , C. and Li , F. 2007 . A new type of microstrip coupler with complementary split-ring resonator . Microwave Opt. Tech. Lett. , 49 Jul. : 1613 – 1616 .
   Google Scholar
• Mao , S. G. and Wu , M. S. 2007 . A novel 3-dB directional coupler with broad bandwidth and compact size using composite right/lefthanded coplanar waveguides . IEEE Microwave Wireless Components Lett. , 17 May : 331 – 333 .
   Google Scholar
• Simion , S. , Sajin , G. , Marcelli , R. , Bartolucci , G. and Craciunoiu , F. Sept. 2007 . “ Design and fabrication of MMIC coupled lines coupler consisting of composite right left-handed transmission lines ” . In Proc. IEEE EUROCON Int. Conference on “Computer as a Tool Sept. , 2073 – 2077 .
   Google Scholar
• Kim , D. J. , Jeong , Y. W. , Kang , J. H. , Kim , J. H. , Kim , C. S. Lim , J. S. Jun. 2005 . “ A novel design of high directivity CPW directional coupler design by using DGS ” . In Proc. IEEE MTT-S Int. Microwave Symp. Dig Jun. , 1239 – 1242 .
   Google Scholar
• Sharma , R. , Chakravarty , T. , Bhooshan , S. and Bhattacharyya , A. B. 2006 . Design of a novel 3 dB microstrip backward wave coupler using defected ground structure . Progress In Electromagnetics Research , PIER 65 : 261 – 273 .
   Web of Science ®Google Scholar
• Ramesh , M. , Packiaraj , D. and Kalghatgi , A. T. 2008 . A compact branch line coupler using defected ground structure . Journal of Electromagnetic Waves and Applications , 22 ( No. 2–3 ) : 267 – 276 .
   Google Scholar
• Chang , C. P. , Chiu , J. C. , Chiu , H. Y. and Wang , Y. H. 2008 . A 3-dB quadrature coupler using broadside-coupled coplanar waveguides . IEEE Microwave Wireless Components Lett., Vol , 18 Mar. : 191 – 193 .
   Web of Science ®Google Scholar
• Zhang , Q. L. , Khan , S. N. and He , S. L. Nov. 2008 . “ Coupled-line directional coupler based on composite right/left-handed coplanar waveguides ” . In Proc. IEEE Int. Workshop on Metamaterials Nov. , 301 – 304 .
   Google Scholar
• Advanced Design System Reference manual 2006
   Google Scholar