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Antenna bandwidth broadening with a negative impedance converter

Published online by Cambridge University Press:  03 June 2013

Oluwabunmi O. Tade ,
Peter Gardner  and
Peter S. Hall
Oluwabunmi O. Tade*
Affiliation:
School of Electronic, Electrical and Computer Engineering, University of Birmingham, Birmingham, B15 2TT, UK. Phone: +44 121 414 2934
Peter Gardner
Affiliation:
School of Electronic, Electrical and Computer Engineering, University of Birmingham, Birmingham, B15 2TT, UK. Phone: +44 121 414 2934
Peter S. Hall
Affiliation:
School of Electronic, Electrical and Computer Engineering, University of Birmingham, Birmingham, B15 2TT, UK. Phone: +44 121 414 2934
*
Corresponding author: O. O. Tade Email: oot850@bham.ac.uk
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Abstract

Cognitive radio (CR) has generated a lot of interest because of the promise of wide instantaneous bandwidths which will improve data rates. Current social trends suggest that CR nodes will ultimately be mobile and handheld. This produces a need for small wideband antennas. The Chu limit imposes a restriction on what is obtainable with passive matching. In this paper, it is shown how a negative impedance converter (NIC) can be used to broadband match a chassis antenna beyond what is obtainable with passive matching. It is also shown how to predict and overcome the instabilities which have limited the top frequency achievable with NICs. The noise and linearity performance of the NIC matched antenna is also shown.

Keywords

Circuit design and applicationsMicrowave measurements
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 5 , Special Issue 3: European Microwave Week 2012 , June 2013 , pp. 249 - 260
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2013 

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References

REFERENCES

[1]Cordeiro, C.; Challapali, K.; Birru, D.; Sai Shankar, N.: The first worldwide wireless standard based on cognitive radios, in IEEE Int. Symp. New Frontiers in dynamic spectrum access networks, Baltimore, 2005.Google Scholar
[2]Harada, H.: A software defined cognitive radio prototype. Personal, indoor and mobile radio communications, PIMRC 2007. IEEE 18th Int. Symp., Athens, 2007.Google Scholar
[3]Jondral, F.K.: Software defined radio–basics and evolution to cognitive radio. EURASIP J. Wirel. Commun. Netw., 3(2005), 275–283.Google Scholar
[4]Haykin, S.: Cognitive radio: brain-empowered wireless communications. IEEE J. Sel. Areas in Commun., 23(2005), 201–220.Google Scholar
[5]Fette, B.A.: Cognitive Radio Technology, 1 ed., Academic Press, Massachusetts, United States, 2009.Google Scholar
[6]Schantz, H.G.: Introduction to ultra-wideband antennas. in 2003 IEEE Conf., Ultra Wideband Systems and Technologies, 2003, 1–9.Google Scholar
[7]Linvill, J.G.: Transistor negative-impedance converters. Proc. IRE, 41(1953), 725–729.Google Scholar
[8]Sussman-Fort, S.E.; Rudish, R.M.: Non-Foster impedance matching of electrically-small antennas. IEEE Trans. Antennas Propag., 57(2009), 2230–2241.Google Scholar
[9]Mirzaei, H.; Eleftheriades, G.V.: A wideband metamaterial-inspired compact antenna using embedded non-Foster matching, in 2011 IEEE Int. Symp., Antennas and Propagation (APSURSI), Spokane, 2011.Google Scholar
[10]Aberle, J. T.: Two-port representation of an antenna with application to non-Foster matching networks. IEEE Trans. Antennas Propag., 56(2008), 1218–1222.Google Scholar
[11]Bit-Babik, G.; Di Nallo, C.; Svigelj, J.; Faraone, A.: Small Wideband Antenna with non-Foster Loading Elements, in Electromagnetics in Advanced Applications ICEAA Torino, 2007.CrossRefGoogle Scholar
[12]Koulouridis, S.; Volakis, J.L.: Non-foster circuits for small broadband antennas, in APSURSI '09 Antennas and Propagation Society Int. Symp., Charleston, 2009.Google Scholar
[13]Gonzalez-Posadas, V.; Segovia-Vargas, D.; Ugarte-Munoz, E; Jimenez-Martin, J.L.; Garcia-Munoz, L.E.: On the performance of negative impedance converters (NICs) to achieve active metamaterials. Dubrovnik, ICECOM, 2010.Google Scholar
[14]Song, K.S.; Rojas, R.G.: Electrically small wire monopole antenna with Non-Foster impedance element, in Proc. of the Fourth European Conf. Antennas and Propagation (EuCAP), Barcelona, 2010.Google Scholar
[15]Stearns, S.D.: Non-foster circuits and stability theory, in IEEE Int. Symp. Antennas and Propagation (APSURSI), Spokane, 2011.Google Scholar
[16]Hu, Z.H.; Kelly, J.; Song, C.T.P.; Hall, P.S.; Gardner, P.: Novel wide tunable dual-band reconfigurable chassis-antenna for future mobile terminals, in Proc. of the Fourth European Conf. Antennas and Propagation (EuCAP), Barcelona, 2010.Google Scholar
[17]Tade, O.O.; Hu, Z.H.; Gardner, P.; Hall, P.S.: Small antennas for cognitive radio using negative impedance converters, in The 12th Annual Post Graduate Symp. on the Convergence of Telecommunications, Networking and Broadcasting (PGNet2011), Liverpool, 2011.Google Scholar
[18]Tade, O.O.; Gardner, P.; Hall, P. S.: Negative impedance converters for broadband antenna matching, in Microwave Conf. (EuMC), Amsterdam, 2012.Google Scholar
[19]Sedra, A.S.; Smith, K.C.: Microelectronic Circuits Revised Edition: Oxford University Press, Inc., New York, 2007.Google Scholar
[20]Tade, O.O.; Gardner, P.; Hall, P.S.: 1.5 GHz Negative Impedance Converters. IET 2nd Annual Active RF Devices, Circuits and Systems Seminar, Oxford, 2012.Google Scholar
[21]Tade, O.O.; Gardner, P.; Hall, P.S.: Broadband matching of small antennas using negative impedance converters, in Antennas and Propagation Society Int. Symp. (APSURSI), Chicago, 2012.Google Scholar
[22]Avago Technologies: Noise Figure Measurement Accuracy – The Y-Factor Method [Online]. Available: http://cp.literature.agilent.com/litweb/pdf/5952-3706E.pdfGoogle Scholar
[23]Marshall, P.F.: Cognitive radio as a mechanism to manage front-end linearity and dynamic range. IEEE Commun. Mag., 47(2009), 81–87.Google Scholar