Vol. 83
Latest Volume
All Volumes
PIERL 119 [2024] PIERL 118 [2024] PIERL 117 [2024] PIERL 116 [2024] PIERL 115 [2024] PIERL 114 [2023] PIERL 113 [2023] PIERL 112 [2023] PIERL 111 [2023] PIERL 110 [2023] PIERL 109 [2023] PIERL 108 [2023] PIERL 107 [2022] PIERL 106 [2022] PIERL 105 [2022] PIERL 104 [2022] PIERL 103 [2022] PIERL 102 [2022] PIERL 101 [2021] PIERL 100 [2021] PIERL 99 [2021] PIERL 98 [2021] PIERL 97 [2021] PIERL 96 [2021] PIERL 95 [2021] PIERL 94 [2020] PIERL 93 [2020] PIERL 92 [2020] PIERL 91 [2020] PIERL 90 [2020] PIERL 89 [2020] PIERL 88 [2020] PIERL 87 [2019] PIERL 86 [2019] PIERL 85 [2019] PIERL 84 [2019] PIERL 83 [2019] PIERL 82 [2019] PIERL 81 [2019] PIERL 80 [2018] PIERL 79 [2018] PIERL 78 [2018] PIERL 77 [2018] PIERL 76 [2018] PIERL 75 [2018] PIERL 74 [2018] PIERL 73 [2018] PIERL 72 [2018] PIERL 71 [2017] PIERL 70 [2017] PIERL 69 [2017] PIERL 68 [2017] PIERL 67 [2017] PIERL 66 [2017] PIERL 65 [2017] PIERL 64 [2016] PIERL 63 [2016] PIERL 62 [2016] PIERL 61 [2016] PIERL 60 [2016] PIERL 59 [2016] PIERL 58 [2016] PIERL 57 [2015] PIERL 56 [2015] PIERL 55 [2015] PIERL 54 [2015] PIERL 53 [2015] PIERL 52 [2015] PIERL 51 [2015] PIERL 50 [2014] PIERL 49 [2014] PIERL 48 [2014] PIERL 47 [2014] PIERL 46 [2014] PIERL 45 [2014] PIERL 44 [2014] PIERL 43 [2013] PIERL 42 [2013] PIERL 41 [2013] PIERL 40 [2013] PIERL 39 [2013] PIERL 38 [2013] PIERL 37 [2013] PIERL 36 [2013] PIERL 35 [2012] PIERL 34 [2012] PIERL 33 [2012] PIERL 32 [2012] PIERL 31 [2012] PIERL 30 [2012] PIERL 29 [2012] PIERL 28 [2012] PIERL 27 [2011] PIERL 26 [2011] PIERL 25 [2011] PIERL 24 [2011] PIERL 23 [2011] PIERL 22 [2011] PIERL 21 [2011] PIERL 20 [2011] PIERL 19 [2010] PIERL 18 [2010] PIERL 17 [2010] PIERL 16 [2010] PIERL 15 [2010] PIERL 14 [2010] PIERL 13 [2010] PIERL 12 [2009] PIERL 11 [2009] PIERL 10 [2009] PIERL 9 [2009] PIERL 8 [2009] PIERL 7 [2009] PIERL 6 [2009] PIERL 5 [2008] PIERL 4 [2008] PIERL 3 [2008] PIERL 2 [2008] PIERL 1 [2008]
2019-04-22
A Novel Microstrip Branch-Line Coupler with Wide Suppression Band
By
Progress In Electromagnetics Research Letters, Vol. 83, 139-143, 2019
Abstract
A new miniaturized microstrip branch-line coupler with wide suppression band is proposed in this paper. The new structure has two significant advantages, which not only effectively reduces the occupied area to 12.3% of the conventional branch-line coupler at 0.6 GHz, but also has high 11th harmonic suppression performance. The measured results indicate that a bandwidth of more than 125 MHz has been achieved while the phase difference between S21 and S31 is within 90° ± 1.0°. The measured bandwidths of |S21| and |S31| within 3 ± 0.4 dB are 145 MHz and 150 MHz, respectively. Furthermore, the measured insertion loss is comparable to that of a conventional branch-line coupler. The new coupler can be easily implemented by using the standard printed-circuit-board etching processes and is very useful for wireless communication systems.
Citation
Shirui Sha, Yingze Ye, and Zhijie Zhang, "A Novel Microstrip Branch-Line Coupler with Wide Suppression Band," Progress In Electromagnetics Research Letters, Vol. 83, 139-143, 2019.
doi:10.2528/PIERL19021003
References

1. Pozar, D. M., Microwave Engineering, 3rd Ed., Ch. 7, 333-337, Wiley, New York, 2005.

2. Mohra, A., A. F. Sheta, and S. F. Mahmoud, "New compact 3 dB 0/180 microstrip coupler configurations," Applied Computational Electromagnetics Society (ACES) Journal, Vol. 19, No. 2, 108-112, 2004.

3. Xiao, B., J. Hong, and B. Wang, "A novel UWB out-of-phase four-way power divider," Applied Computational Electromagnetics Society (ACES) Journal, Vol. 26, No. 10, 863-867, 2011.

4. Shamaileh, K. A., A. Qaroot, N. Dib, and A. Sheta, "Design of miniaturized unequal split wilkinson power divider with harmonics suppression using non-uniform transmission lines," Applied Computational Electromagnetics Society Journal, Vol. 26, No. 6, 530-538, 2011.

5. Eccleston, K. W. and S. H. M. Ong, "Compact planar microstrip line branch-line and rat-race couplers," IEEE Trans. Microw. Theory Tech., Vol. 51, No. 10, 2119-2125, 2003.
doi:10.1109/TMTT.2003.817442

6. Mondal, P. and A. Chakrabarty, "Design of miniaturized branch-line and rat-race hybrid couplers with harmonics suppression," IET Microw. Antennas Propag., Vol. 3, No. 1, 109-116, 2009.
doi:10.1049/iet-map:20070202

7. Gu, J. and X. Sun, "Miniaturization and harmonic suppression of branch-line and rat-race hybrid coupler using compensating spiral compact micostrip resonant cell," IEEE MTT-S Int. Dig., 1211-1214, 2005.

8. Wang, J., B.-Z. Wang, Y. X. Guo, L. C. Ong, and S. Xiao, "A compact slow-wave microstrip branch-line coupler with high performance," IEEE Microw. Wirel. Compon. Lett., Vol. 17, No. 7, 501-503, 2007.
doi:10.1109/LMWC.2007.899307

9. Velidi, V. K., B. Patel, and S. Sanval, "Harmonic suppressed compact wideband branch-line coupler using unequal length open-stub units," International Journal of RF and Microwave Computer-Aided Engineering, Vol. 21, No. 1, 115-119, 2011.
doi:10.1002/mmce.20495

10. Tsai, K. Y., H. S. Yang, J. H. Chen, and Y. J. Chen, "A miniaturized 3 dB branch-line hybrid coupler with harmonics suppression," IEEE Microw. Wirel. Compon. Lett., Vol. 21, No. 10, 537-539, 2011.
doi:10.1109/LMWC.2011.2164901

11. Velidi, V. K., A. Pal, and S. Sanyal, "Harmonics and size reduced microstrip branch-line baluns using shunt open-stubs," International Journal of RF and Microwave Computer-Aided Engineering, Vol. 21, No. 2, 115-119, 2011.
doi:10.1002/mmce.20495

12. Wu, L., S. Wang, L. Li, and C. Tang, "Compact microstrip UWB power divider with dual notched bands using dual-mode resonator," Progress In Electromagnetics Research Letters, Vol. 75, 39-45, 2018.