Transmission-type negative group delay networks using coupled line doublet structure
- Author(s): Girdhari Chaudhary 1 and Yongchae Jeong 1
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View affiliations
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Affiliations:
1:
Division of Electronics Engineering, IT Convergence Researcher Center, Chonbuk National University, Jeollabuk-do, Jeonju, 561-756, Republic of Korea
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Affiliations:
1:
Division of Electronics Engineering, IT Convergence Researcher Center, Chonbuk National University, Jeollabuk-do, Jeonju, 561-756, Republic of Korea
- Source:
Volume 9, Issue 8,
05 June 2015,
p.
748 – 754
DOI: 10.1049/iet-map.2014.0351 , Print ISSN 1751-8725, Online ISSN 1751-8733
This study presents a novel approach to the design and implementation of transmission-type negative group delay (NGD) networks based on a coupled line doublet structure. To improve the reflection coefficients, a quarter-wavelength transmission line is connected between the input and through ports of a coupled line section. For the doublet structure, two coupled line sections are arranged in a symmetrical manner by connecting them back-to-back with the help of the quarter- wavelength through line. For the experimental demonstration, two planar NGD networks (unmatched and matched doublet NGD networks) are designed, simulated and measured at a centre frequency of 2.14 GHz. From the measurement, a group delay (GD) of −5.66 ns and signal attenuation (SA) of 18.78 dB were obtained in the case of an unmatched NGD network. Similarly, for the matched NGD case, a GD of −6.33 ns, SA of 20.69 dB and input/output return losses >29 dB were obtained at the centre frequency.
Inspec keywords: electromagnetic wave attenuation; electromagnetic wave reflection; telecommunication transmission lines; coupled transmission lines
Other keywords: planar NGD networks; coupled line section; unmatched doublet NGD networks; symmetrical manner; frequency 2.14 GHz; quarter-wavelength transmission line; coupled line doublet structure; signal attenuation; reflection coefficients; transmission-type negative group delay networks
Subjects: Transmission line theory; Transmission line links and equipment; Electromagnetic wave propagation
References
-
-
1)
-
26. Choi, H., Song, K., Kim, C.D., Jeong, Y.: ‘Synthesis of negative group delay time circuit’. Proc. of Asia Pacific Microwave Conf., 2008, pp. 1–4.
-
-
2)
-
32. Zhang, X.Y., Chan, C.H., Xue, Q., Hu, B.J.: ‘RF tunable bandstop filters with constant bandwidth based on a doublet configuration’, IEEE Trans. Ind. Electron., 2012, 59, (2), pp. 1257–1265 (doi: 10.1109/TIE.2011.2158038).
-
-
3)
-
7. Noto, H., Yamauchi, K., Nakayama, M., Isota, Y.: ‘Negative group delay circuit for feed forward amplifier’. IEEE Int. Microwave Symp. Digest, 2007, pp. 1103–1106.
-
-
4)
- R. Levy , R.V. Snyder , S. Shin . Bandstop filters with extended upper passband. IEEE Trans. Microw. Theory Tech. , 2503 - 2515
-
5)
-
5. Choi, H., Jeong, Y., Kim, C.D., Kenney, J.S.: ‘Efficiency enhancement of feedforward amplifiers by employing a negative group delay circuit’, IEEE Trans. Microw. Theory Tech., 2010, 58, (5), pp. 1116–1125 (doi: 10.1109/TMTT.2010.2045576).
-
-
6)
-
16. Lucyszyn, S., Robertson, I.D., Aghvami, A.H.: ‘Negative group delay synthesizer’, Electron. Lett., 1998, 29, (9), pp. 798–800 (doi: 10.1049/el:19930533).
-
-
7)
-
34. Mathaei, G., Young, L., Jones, E.M.T.: ‘Microwave filters: impedance matching networks and coupling structures’ (Artech. House, Dedham, MA, 1964).
-
-
8)
- B. Ravelo , A. Perennec , M. Le Roy , Y. Boucher . Active microwave circuit with negative group delay. IEEE Microw. Wirel. Compon. Lett. , 12 , 861 - 863
-
9)
-
31. Mirzaei, H., Islam, R., Eleftheriades, G.V.: ‘Anomalous negative group velocity in coupled positive-index/negative-index guides supporting complex modes’, IEEE Trans. Antenna Propag., 2011, 59, (9), pp. 3412–3420 (doi: 10.1109/TAP.2011.2161558).
-
-
10)
-
3. Jeong, Y., Choi, H., Kim, C.D.: ‘Experimental verification for time advancement of negative group delay in RF electronics circuits’, IET Electron. Lett., 2010, 46, (4), pp. 306–307 (doi: 10.1049/el.2010.3147).
-
-
11)
-
21. Chaudhary, G., Jeong, Y.: ‘Distributed transmission line negative group delay circuit with improved signal attenuation’, IEEE Microw. Wirel. Compon. Lett., 2014, 24, (1), pp. 20–22 (doi: 10.1109/LMWC.2013.2287246).
-
-
12)
- O.F. Siddiqui , S.J. Erickson , G.V. Eleftheriades , M. Mojahedi . Time-domain measurement of negative group delay in negative-refractive-index transmission-line metamaterials. IEEE Trans. Microw. Theory Tech. , 5 , 1449 - 1454
-
13)
- S. Lucyszyn , I.D. Robertson . Analog reflection topology building blocks for adaptive microwave signal processing applications. IEEE Trans. Microw. Theory Tech. , 601 - 611
-
14)
-
4. Mitchell, M.W., Chia, R.Y.: ‘Causality and negative group delay in a simple bandpass amplifier’, Am. J. Phys., 1998, 66, (1), pp. 14–19 (doi: 10.1119/1.18813).
-
-
15)
-
22. Chaudhary, G., Jeong, Y., Lim, J.: ‘Microstrip line negative group delay filters for microwave circuits’, IEEE Microw. Theory Tech., 2014, 62, (2), pp. 234–243 (doi: 10.1109/TMTT.2013.2295555).
-
-
16)
-
8. Ravelo, B., Roy, M.L., Perennec, A.: ‘Application of negative group delay active circuits to the design of broadband and constant phase shifters’, Microw. Opt. Tech. Lett., 2008, 50, (12), pp. 3078–3080 (doi: 10.1002/mop.23883).
-
-
17)
-
28. Kandic, M., Bridges, G.E.: ‘Asymptotic limit of negative group delay in active resonator-based distributed circuits’, IEEE Trans. Circuit System-I, 2011, 58, (8), pp. 1727–1735 (doi: 10.1109/TCSI.2011.2107251).
-
-
18)
-
20. Choi, H., Chaudhary, G., Moon, T., Jeong, Y., Lim, J., Kim, C.D.: ‘A design of composite negative group delay circuit with lower signal attenuation for performance improvement of power amplifier linearization techniques’. IEEE Int. Microwave Symp. Digest, 2011, pp. 1–4.
-
-
19)
-
35. Pozar, D.M.: ‘Microwave engineering’ (John Wiley & Sons, Inc., 1998, 4th edn.).
-
-
20)
-
25. Ravelo, B., Perennec, A., Roy, M.Le.: ‘Synthesis of broadband negative group delay active circuits’. IEEE Int. Microwave Symp. Digest, 2007, pp. 2177–2180.
-
-
21)
-
13. Song, Y., Lee, S., Cho, E., Lee, J., Nam, S.: ‘A CMOS class-E power amplifier with voltage stress relief and enhanced efficiency’, IEEE Trans. Microw. Theory Tech., 2010, 58, (2), pp. 310–317 (doi: 10.1109/TMTT.2009.2037877).
-
-
22)
-
27. Kandic, M., Bridges, G.E.: ‘Bilateral Gain-compensated negative group delay circuit’, IEEE Microw. Wirel. Compon. Lett., 2011, 21, (6), pp. 308–310 (doi: 10.1109/LMWC.2011.2132696).
-
-
23)
- M. Kitano , T. Nakanishi , K. Sugiyama . Negative group delay and superluminal propagation: an electronic circuit approach. IEEE J. Sel. Top. Quantum Electron. , 1 , 43 - 51
-
24)
-
23. Broomfield, C.D., Everard, J.K.A.: ‘Broadband negative group delay networks for compensation of microwave oscillators and filters’, Electron. Lett., 2000, 9, (23), pp. 1931–1932 (doi: 10.1049/el:20001377).
-
-
25)
-
17. Choi, H., Kim, Y., Jeong, Y., Kim, C.D.: ‘Synthesis of reflection type negative group delay circuit using transmission line resonator’. Proc. of 39th European Microwave Conf., 2009, pp. 902–605.
-
-
26)
-
11. Gregoire, D.J., White, C.R., Colburn, J.S.: ‘Wideband artificial magnetic conductors loaded with non-Foster negative inductors’, IEEE Antennas Wirel. Propag. Lett., 2011, 10, pp. 1586–1589 (doi: 10.1109/LAWP.2011.2181937).
-
-
27)
-
9. Oh, S.S., Shafai, L.: ‘Compensated circuit with characteristics of lossless double negative materials and its application to array antennas’, IET Microw. Antennas Propag., 2007, 1, (1), pp. 29–38 (doi: 10.1049/iet-map:20050229).
-
-
28)
-
11. Mirzaei, H., Eleftheriades, G.V.: ‘Realizing non-Foster reactive elements using negative group delay networks’, IEEE Trans. Microw. Theory Tech., 2013, 61, (12), pp. 4322–4332 (doi: 10.1109/TMTT.2013.2281967).
-
-
29)
-
12. Kolev, S., Delarcremmonniere, B., Gautier, J.L.: ‘Using a negative capacitance to increase the tuning range of a varactor diode in MMIC technology’, IEEE Trans. Microw. Theory Tech., 2001, 49, (12), pp. 2425–2530 (doi: 10.1109/22.971631).
-
-
30)
-
19. Choi, H., Kim, Y., Jeong, Y., Lim, J.: ‘A design of size-reduced negative group delay circuit using a stepped impedance resonator’. Proc. of Asia-Pacific Microwave Conf., 2010, pp. 118–1121.
-
-
31)
-
6. Choi, H., Jeong, Y., Kim, C.D., Kenney, J.S.: ‘Bandwidth enhancement of an analog feedback amplifier by employing a negative group delay circuit’, Prog. Electromagn. Res., 2010, 105, pp. 253–272 (doi: 10.2528/PIER10041808).
-
-
32)
-
10. Solli, D., Chiao, R.Y.: ‘Superluminal effects and negative delays in electronics, and their application’, Phys. Rev. E, Stat. Phys. Plasmas Fluids Relat. Interdiscip. Top., 2002, 5, pp. 0566011–05661014.
-
-
33)
-
2. Brillouin, L.: ‘Wave propagation and group velocity’ (Academic Press, New work, 1960).
-
-
34)
- O.F. Siddiqui , M. Mojahedi , G.V. Eleftheriades . Periodically loaded transmission line with effective negative refractive index and negative group velocity. IEEE Trans. Antennas Propagat. , 10 , 2619 - 2625
-
1)