A compact branch-line coupler using defected ground structures

Microwave and Optical Technology Letters

Volumn 50, Issue 2, 2008, Pages 386-389

  Maddah Ali, Mohsen ^a   Oskouei, Hamid Dalili ^a   Forooraghi, Keyvan ^a  

^a TARBIAT MODARES UNIVERSITY   (Iran)

Author keywords

Characteristic impedance; Compact branch line coupler; Defected ground structure; High impedance transmission line

Indexed keywords

BAND STRUCTURE; CIRCUIT SIMULATION; GROUND STATE; OPTICAL VARIABLES MEASUREMENT;

CHARACTERISTIC IMPEDANCE; COMPACT BRANCH-LINE COUPLERS; DEFECTED GROUND STRUCTURE; HIGH-IMPEDANCE TRANSMISSION LINES;

OPTICAL INTERCONNECTS;

EID: 38849188580     PISSN: 08952477     EISSN: None     Source Type: Journal    
DOI: 10.1002/mop.23118     Document Type: Article

References (15)

1. P. Pieters, K. Vaesen, S. Brebels, S. Mahmoud, W. De Raedt, E. Beyne, and R. Mertens, Accurate modeling of high-Q spiral inductors in thin film multilayer technology for wireless telecommunication applications, IEEE Trans Microwave Theory Tech 49 (2001), 589-599.
2. Y.C. Chiang and C.Y. Chen, Design of a wideband lumped-element 3-dB quadrature coupler, IEEE Trans Microwave Theory Tech 49 (2001), 476-479.
3. I. Sakagami, K. Sagaguti, M. Fujii, M. Tahara, and Y. Hao, On a lumped element three-branch 3-dB coupler with Butterworth and Chebyshev characteristics, IEEE Int Midwest Circuits Syst Symp (2004), III-21-III-24.
4. W.S. Tung, H.H. Wu, and Y.C. Chiang, Design of microwave wideband quadrature hybrid using planar transformer coupling method, IEEE Trans Microwave Theory Tech 51 (2003), 1852-1856.
5. Y.J. Sung, C.S. Ahn, and Y.-S. Kim, Size reduction and harmonicsuppression of rat-race hybrid coupler using defected ground structure, IEEE Microwave Wireless Compon Lett 14 (2004), 7-9.
6. S. Dwari and S. Sanyal, Size reduction and harmonic suppression of microstrip branch-line coupler using defected ground structure, Microwave Opt Technol Lett 48 (2006).
7. K.O. Sun, S.J. Ho, C.C. Yen, and D. Weide, A compact branch-line coupler using discontinuous microstrip lines, IEEE Microwave Wireless Compon Lett 15 (2005), 519-520.
8. S.S. Liao, PT. Sun, N.C. Chin, and J.T. Peng, A novel compact-size branchline coupler, IEEE Microwave Wireless Compon Lett 15 (2005), 588-590.
9. R. Qiang, Y. Wang, and D. Chen, A novel microstrip bandpass filter with two cascaded PBG structures, 2001 IEEE AP-S Dig, Boston, MA (2001), 510-513.
10. J.P. Kim and W.S. Park, Microstrip lowpass filter with multislots on ground plane, Electron Lett 37 (2001), 1525-1526.
11. R. Sharma, T. Chakravarty, and S. Bhooshan, Design of a novel 3 dB microstrip backward wave coupler using defected ground structure, Prog Electromagn Res PIER 65 (2006), 261-273.
12. V. Radisic, Y. Qian, R. Coccioli, and T. Itoh, Novel 2-D photonic bandgap structure for microstrip lines, IEEE Microwave Guided Wave Lett 8 (1998), 69-71.
13. H.R. Dalili Oskouei and Z. Atlasbaf, A modified dual-mode band pass filter with DGS structures, 13th Conference on Microwave Techniques, Prague, 2005.
14. V. Radisic, V. Disk, Y. Qian, R. Coccioli, and T. Itoh, Novel 2D photonic bandgap structure for microsmp lines, IEEE Microwave Guided Wave Lett 8 (1998), 69-72.
15. J.S. Lim, CS. Kim, J.S. Park, D. Ahn, and S. Nam, Design of 10dB 90° branch-line coupler using microstrip line with defected ground structure, Electron Lett 36 (2000), 1784-1785.