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Millimeter-wave coplanar stripline power dividers

Published online by Cambridge University Press:  01 May 2013

Chong Li ,
Lai Bun Lok ,
Ata Khalid ,
Vasileios Papageorgiou ,
James Grant  and
David R. S. Cumming
Chong Li*
Affiliation:
School of Engineering, University of Glasgow, Glasgow G12 8LT, UK. Phone: + 44 141 3306690
Lai Bun Lok
Affiliation:
Department of Electronics and Electrical Engineering, University College of London, London, UK
Ata Khalid
Affiliation:
School of Engineering, University of Glasgow, Glasgow G12 8LT, UK. Phone: + 44 141 3306690
Vasileios Papageorgiou
Affiliation:
School of Engineering, University of Glasgow, Glasgow G12 8LT, UK. Phone: + 44 141 3306690
James Grant
Affiliation:
School of Engineering, University of Glasgow, Glasgow G12 8LT, UK. Phone: + 44 141 3306690
David R. S. Cumming
Affiliation:
School of Engineering, University of Glasgow, Glasgow G12 8LT, UK. Phone: + 44 141 3306690
*
Corresponding author: C. Li Email: [email protected]
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Abstract

We present the design, fabrication, and measurement of a 2-way modified Wilkinson divider constructed in a coplanar geometry exhibiting ultra wideband isolation, transmission, and port matching in the millimeter-wave frequency range. The proposed divider replaces the lumped resistor in the conventional Wilkinson divider with two quarter-wave length transmission lines, a phase inverter, and two 2Z0 resistors. Except for the three ports that are coplanar waveguides (CPWs), the main body of the divider uses coplanar striplines (CPS). The phase inverter is realized using a simple airbridge-based crossover which is compatible with a modern monolithic microwave integrated circuit process. The divider has a ring-like configuration fabricated on a 620 µm thick semi-insulating GaAs wafer using electron beam lithography (EBL) technology. Three-dimensional (3D) full-wave electromagnetic simulations have been carried out to optimize the design and investigate the possible effect of fabrication tolerance on the performance of the crossover and the divider. Two dividers working at center frequencies of 25 and 80 GHz have been designed, fabricated, and tested. They all show consistent performance in terms of bandwidth, isolation, and port matching. Experimental and simulation results are in excellent agreement.

Keywords

Passive components and circuitsModelingSimulation and characterizations of devices and circuits
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 5 , Special Issue 3: European Microwave Week 2012 , June 2013 , pp. 205 - 212
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2013 

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References

REFERENCES

[1]Wilkinson, E.J.: An N-way hybrid power divider, IEEE Trans. Microw. Theory Tech., 8 (1960), 116–118.Google Scholar
[2]Gysel, U.H.: A new N-way power divider/combiner suitable for high-power application, In IEEE MTT-S Int. Microwave Symp., Menlo Park, USA, 1975.Google Scholar
[3]Chiu, L.; Xue, Q.: A parallel-strip ring power divider with high isolation and arbitrary power-dividing ratio. IEEE Trans. Microw. Theory Tech., 55 (2007), 2419–2426.CrossRefGoogle Scholar
[4]Wu, Y.; Liu, Y.; Zhang, Y.; Gao, J.; Zhou, H.: A dual band unequal Wilkinson power divider without reactive components. IEEE Trans. Microw. Theory Tech., 57 (2009), 216–222.Google Scholar
[5]Avrillon, S.; Pele, I.; Chousseaud, A.; Toutain, S.: Dual-band power divider based on semiloop stepped-impedance resonators. IEEE Trans. Microw. Theory Tech., 4 (2003), 1269–1273.CrossRefGoogle Scholar
[6]Chongcheawchamnan, M.; Patisang, S.; Krairiksh, M.; Robertson, I.D.: Tri-band Wilkinson power divider using a three-section transmission-line transformer. IEEE Microw. Wirel. Compon. Lett., 16 (2006), 452–454.Google Scholar
[7]Izadpanah, H.: A millimeter wave broadband wireless access technology demonstrator for the next generation Internet network reach extension. IEEE Commun. Mag., 39 (2001), 140–145.Google Scholar
[8]Wong, S.W.; Zhu, L.: Ultra-wideband power divider with good in-band splitting and isolation performances. IEEE Microw. Wirel. Compon. Lett., 18 (2008), 518–520.Google Scholar
[9]Abbosh, A.M.: A compact UWB three-way power divider. IEEE Microw. Wirel. Compon. Lett., 8 (2007), 598–600.Google Scholar
[10]Oraizi, H.; Esfahlan, M.S.: Miniaturization of Wilkinson power dividers by using defected ground structures. Prog. Electromagn. Res. Lett., 4 (2008), 113–120.CrossRefGoogle Scholar
[11]Wong, K.W.; Chiu, L.; Xue, Q.: Uniplanar power dividers using asymmetric coplanar striplines and slotlines, in Proc. 38th European Microw. Conf., Amsterdam, The Netherlands, 2008.CrossRefGoogle Scholar
[12]Imaoka, T.; Banba, S.; Minakawa, A.; Imai, N.: Millimeter-wave wide band amplifiers using multilayer MMIC technology. IEEE Trans. Microw. Theory Tech., 1 (1997), 95–101.Google Scholar
[13]Maas, S.A.; Chang, K.W.: A broadband, planar, doubly balanced monolithic Ka-band diode mixer. IEEE Trans. Microw. Theory Tech., 12 (1993), 2330–2335.Google Scholar
[14]Pozar, D.M.: Microwave Engineering, 3rd ed., Wiley, USA 2006.Google Scholar
[15]Ghione, G.; Nald, C.: Analytical formulas for coplanar lines in hybrid and monolithic MICs. Electron. Lett., 4 (1984), 179–181.Google Scholar
[16]Lok, L.B.; Hwang, C.-J.; Chong, H.M.-H.; Elgaid, K.; Thayne, I.G.: Measurement and modeling of CPW transmission lines and power dividers on electrically thick GaAs substrate to 220 GHz, in Proc. 33rd Int. Conf. Infrared, Millimeter and Terahertz Waves, Pasadena, CA, USA, 2008, 1–2.Google Scholar
[17]Khalid, A.; Li, C.; Grant, J.; Saha, S.; Ferguson, S.; Cumming, D.R.S.: Simple e-beam air-bridge technology for mm-wave applications. Microelectron. Eng., 98 (2012), 262–265.Google Scholar
[18]Li, C.; Lok, L.B.; Khalid, A.; Cumming, D.R.S.: Novel on-wafer measurement technique for passive multiport devices in millimetre wave frequency range, in 9th Millimetre-wave User Group Meeting. Unpublished, Glasgow, UK, 2011.Google Scholar
[19]Lopez-Diaz, D. et al. : Monolithic integrated 210 GHz couplers for balanced mixers and image rejection mixers, in Workshop on Integrated Nonlinear Microwave and Millimeter-Wave Circuits, Freiburg, Germany, 2010, 58–61.Google Scholar
[20]Basu, S.; Hayden, L.: An SOLR calibration for accurate measurement of orthogonal on-wafer DUTs, in IEEE MTT-S Digest, Denver CO, 1997, 1335–1338.Google Scholar
[21]Li, C.; Lok, L.B.; Khalid, A.; Cumming, D.R.S.: Coplanar ring divider with wideband high isolation performance. Prog. Electromagn. Res. Lett., 25 (2011), 1–10.Google Scholar