Vol. 46
Latest Volume
All Volumes
PIERC 129 [2023] PIERC 128 [2023] PIERC 127 [2022] PIERC 126 [2022] PIERC 125 [2022] PIERC 124 [2022] PIERC 123 [2022] PIERC 122 [2022] PIERC 121 [2022] PIERC 120 [2022] PIERC 119 [2022] PIERC 118 [2022] PIERC 117 [2021] PIERC 116 [2021] PIERC 115 [2021] PIERC 114 [2021] PIERC 113 [2021] PIERC 112 [2021] PIERC 111 [2021] PIERC 110 [2021] PIERC 109 [2021] PIERC 108 [2021] PIERC 107 [2021] PIERC 106 [2020] PIERC 105 [2020] PIERC 104 [2020] PIERC 103 [2020] PIERC 102 [2020] PIERC 101 [2020] PIERC 100 [2020] PIERC 99 [2020] PIERC 98 [2020] PIERC 97 [2019] PIERC 96 [2019] PIERC 95 [2019] PIERC 94 [2019] PIERC 93 [2019] PIERC 92 [2019] PIERC 91 [2019] PIERC 90 [2019] PIERC 89 [2019] PIERC 88 [2018] PIERC 87 [2018] PIERC 86 [2018] PIERC 85 [2018] PIERC 84 [2018] PIERC 83 [2018] PIERC 82 [2018] PIERC 81 [2018] PIERC 80 [2018] PIERC 79 [2017] PIERC 78 [2017] PIERC 77 [2017] PIERC 76 [2017] PIERC 75 [2017] PIERC 74 [2017] PIERC 73 [2017] PIERC 72 [2017] PIERC 71 [2017] PIERC 70 [2016] PIERC 69 [2016] PIERC 68 [2016] PIERC 67 [2016] PIERC 66 [2016] PIERC 65 [2016] PIERC 64 [2016] PIERC 63 [2016] PIERC 62 [2016] PIERC 61 [2016] PIERC 60 [2015] PIERC 59 [2015] PIERC 58 [2015] PIERC 57 [2015] PIERC 56 [2015] PIERC 55 [2014] PIERC 54 [2014] PIERC 53 [2014] PIERC 52 [2014] PIERC 51 [2014] PIERC 50 [2014] PIERC 49 [2014] PIERC 48 [2014] PIERC 47 [2014] PIERC 46 [2014] PIERC 45 [2013] PIERC 44 [2013] PIERC 43 [2013] PIERC 42 [2013] PIERC 41 [2013] PIERC 40 [2013] PIERC 39 [2013] PIERC 38 [2013] PIERC 37 [2013] PIERC 36 [2013] PIERC 35 [2013] PIERC 34 [2013] PIERC 33 [2012] PIERC 32 [2012] PIERC 31 [2012] PIERC 30 [2012] PIERC 29 [2012] PIERC 28 [2012] PIERC 27 [2012] PIERC 26 [2012] PIERC 25 [2012] PIERC 24 [2011] PIERC 23 [2011] PIERC 22 [2011] PIERC 21 [2011] PIERC 20 [2011] PIERC 19 [2011] PIERC 18 [2011] PIERC 17 [2010] PIERC 16 [2010] PIERC 15 [2010] PIERC 14 [2010] PIERC 13 [2010] PIERC 12 [2010] PIERC 11 [2009] PIERC 10 [2009] PIERC 9 [2009] PIERC 8 [2009] PIERC 7 [2009] PIERC 6 [2009] PIERC 5 [2008] PIERC 4 [2008] PIERC 3 [2008] PIERC 2 [2008] PIERC 1 [2008]
2014-01-22
Miniaturization of Trans-Directional Coupled Line Couplers Using Series Inductors
By
Progress In Electromagnetics Research C, Vol. 46, 171-177, 2014
Abstract
A miniaturized trans-directional (TRD) coupled line coupler comprises series inductors and capacitor loaded coupled lines is proposed in the paper. Series inductors are added to the periodically loaded coupled lines for further miniaturization of volume. A novel equivalent circuit is presented and theoretically analyzed. Test circuits for the miniaturized and conventional 3-dB TRD couplers were designed to operate at 1.6 GHz and fabricated using printed circuit board (PCB) technology. Samples have been measured, and comparisons in terms of volume, schematic simulation results and measurement results between the miniaturized and conventional 3-dB TRD couplers have been made to validate the proposed structure. Results show that the proposed miniaturized TRD coupler achieves a size reduction of 47.6% compared to the conventional TRD coupler with similar performances.
Citation
Hongmei Liu Shao-Jun Fang Zhongbao Wang Yun Zhou , "Miniaturization of Trans-Directional Coupled Line Couplers Using Series Inductors," Progress In Electromagnetics Research C, Vol. 46, 171-177, 2014.
doi:10.2528/PIERC13122201
http://www.jpier.org/PIERC/pier.php?paper=13122201
References

1. Liu, , G.-Q., L.-S. Wu, and W.-Y. Yin, "A compact microstrip rat-race coupler with modified Lange and T-shaped arms," Progress In Electromagnetics Research, Vol. 115, 509-523, 2011.

2. Pelaez-Perez, A. M., P. Almorox-Gonzalez, J. I. Alonso, and J. Gonzalez-Martin, "Ultra-broadband directional couplers using microstrip with dielectric overlay in millimeter-wave band," Progress In Electromagnetics Research, Vol. 117, 495-509, 2011.

3. Li, B. and W. Wu, "Compact dual-band branch-line coupler with 20:1 power dividing ratio," Journal of Electromagnetic Waves and Applications, Vol. 25, No. 4, 607-615, 2011.
doi:10.1163/156939311794500322

4. Piatnitsa, V., D. Kholodnyak, I. Fischuk, M. Komulainen, H. Jantunen, and I. Vendik, "Miniature 90o and 180o directional couplers for bluetooth and WLAN applications designed as multilayer microwave integrated circuits," Journal of Electromagnetic Waves and Applications, Vol. 25, No. 2--3, 169-175, 2011.
doi:10.1163/156939311794362911

5. Malo Gomez, I., J. D. Gallego-Puyol, C. Diez Gonzalez, I. Lopez Fernandez, and C. Briso Rodrguez, "Cryogenic hybrid coupler for ultra-low-noise radio astronomy balanced amplifiers," IEEE Trans. Microw. Theory Tech., Vol. 57, No. 12, 3239-3245, 2009.
doi:10.1109/TMTT.2009.2033874

6. Wei, W.-B., Q.-Z. Liu, Y.-Z. Yin, and H.-J. Zhou, "Reconfigurable microstrip patch antenna with switchable polarization," Progress In Electromagnetics Research, Vol. 75, 63-68, 2007.
doi:10.2528/PIER07053002

7. Antonino-Daviu, E., M. Cabedo-Fabres, B. Bernardo-Clemente, and M. Ferrando-Bataller, "Printed multimode antenna for MIMO systems," Journal of Electromagnetic Waves and Applications, Vol. 25, No. 14-15, 2022-2032, 2011.
doi:10.1163/156939311798072162

8. Fathelbab, W. M., "Synthesis of cul-de-sac filter networks utilizing hybrid couplers," IEEE Microwave Compon. Lett., Vol. 17, No. 5, 334-336, 2007.
doi:10.1109/LMWC.2007.895696

9. Shie, C.-I., J.-C. Cheng, S.-C. Chou, and Y.-C. Chiang, "Transdirectional coupled-line couplers implemented by periodical shunt capacitors," IEEE Trans. Microw. Theory Tech., Vol. 57, No. 12, 2981-2988, 2009.
doi:10.1109/TMTT.2009.2034219

10. Shie, C.-I., J.-C. Cheng, S.-C. Chou, and Y.-C. Chiang, "Design of CMOS quadrature VCO using on-chip trans-directional couplers," Progress In Electromagnetics Research, Vol. 106, 91-106, 2010.
doi:10.2528/PIER10053002

11. Shie, C.-I., J.-C. Cheng, S.-C. Chou, and Y.-C. Chiang, "Design of a new type planar balun by using trans-directional couplers," IEEE Trans. Microw. Theory Tech., Vol. 60, No. 3, 471-476, 2012.
doi:10.1109/TMTT.2011.2176139

12. Vogel, R. W., "Analysis and design of lumped- and lumped-distributed element directional couplers for MIC and MMIC applications," IEEE Trans. Microw. Theory Tech., Vol. 40, No. 2, 253-262, 1992.
doi:10.1109/22.120097

13. Bona, M., L. Manholm, and J.-P. Starski, "Low-loss compact butler matrix for a microstrip antenna," IEEE Trans. Microw. Theory Tech., Vol. 50, No. 9, 2069-2075, 2002.
doi:10.1109/TMTT.2002.802318

14. Phromloungsri, R., M. Chongcheawchamnan, and I. D. Robertson, "Inductively compensated parallel coupled microstrip lines and their applications," IEEE Trans. Microw. Theory Tech., Vol. 54, No. 9, 3571-3581, 2006.
doi:10.1109/TMTT.2006.881026

15. Lee, S. and Y. Lee, "A design method for microstrip directional couplers loaded with shunt inductors for directivity enhancement," IEEE Trans. Microw. Theory Tech., Vol. 58, No. 4, 994-1002, 2010.
doi:10.1109/TMTT.2010.2042544

16. Collin, R. E., Foundations for Microwave Engineering, 2nd Ed., McGraw-Hill, New York, 1992.