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Novel compact microstrip diplexer for GSM applications

Published online by Cambridge University Press:  03 April 2018

Abbas Rezaei  and
Leila Noori
Abbas Rezaei
Affiliation:
Department of Electrical Engineering, Kermanshah University of Technology, Kermanshah, Iran
Leila Noori*
Affiliation:
Young Researchers and Elite Club, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
*
Author for correspondence: Leila Noori, E-mail: [email protected]
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Abstract

In this paper, a microstrip diplexer is designed based on a novel structure consisting of the meandrous and patch cells. It operates at 0.8 and 0.9 GHz for global system for mobile communications applications. The proposed diplexer is well miniaturized with an overall size of 0.01 λg2. It has the narrowband channels making it appropriate for the modern long-range communication systems, which are widely accepted by the industry. The introduced diplexer has the other advantages of low insertion and return losses and the good isolation between channels better than −30 dB. Moreover, there is a good upper stopband rejection so that the first and second harmonics are suppressed with a maximum level of −30 dB. The designing method is based on finding the effective parameters to control the resonance frequency, miniaturization and harmonic attenuation simultaneously. To validate the designing method and simulation results, the proposed diplexer is fabricated and measured. There is a good agreement between the simulated and measured results.

Keywords

Compactdiplexerharmonicsinsertion lossisolationmicrostrip
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 10 , Issue 3 , April 2018 , pp. 313 - 317
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2018 

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References

1.Rezaei, A, Noori, L and Mohamadi, H (2017) Design of a novel compact microstrip diplexer with low insertion loss. Microwave and Optical Technology Letters 59(7), 1672–1676.Google Scholar
2.Feng, W, Zhang, Y and Che, W (2017) Tunable dual-band filter and diplexer based on folded open loop ring resonators. IEEE Transactions on Circuits and Systems 64(9), 1047–1051.Google Scholar
3.Salehi, MR, Keyvan, S, Abiri, E and Noori, L (2016) Compact microstrip diplexer using new design of triangular open loop resonator for 4 G wireless communication systems. AEU – International Journal of Electronics and Communications 70(7), 961–969.CrossRefGoogle Scholar
4.Noori, L and Rezaei, A (2017) Design of a compact narrowband quad-channel diplexer for multi-channel long-range RF communication systems. In Analog Integrated Circuits and Signal Processing, First Online: 20 October 2017, 1–8.Google Scholar
5.Noori, L and Rezaei, A (2017) Design of microstrip wide stopband quad-band bandpass filters for multi-service communication systems. AEU-International Journal of Electronics and Communications 81, 136–142.Google Scholar
6.Guan, X, Yang, F, Liu, H and Zhu, L (2014) Compact and high-isolation diplexer using dual-mode stub-loaded resonators. IEEE Microwave Wireless Component Letters 24(6), 385–387.CrossRefGoogle Scholar
7.Bukuru, D and Song, K (2015) Compact wide-stopband planar diplexer based on rectangular dual spiral resonator. Microwave and Optical Technology Letters 57(1), 174–178.CrossRefGoogle Scholar
8.Noori, L and Rezaei, A (2017) Design of a microstrip diplexer with a novel structure for WiMAX and wireless applications. AEU-International Journal of Electronics and Communications 77, 18–22.Google Scholar
9.Huang, F, Wang, J, Zhu, L and Wu, W (2016) Compact microstrip balun diplexer using stub-loaded dual-mode resonators. IET Electronic Letters 52, 1994–1996.Google Scholar
10.Noori, L and Rezaei, A (2017) Design of a microstrip dual-frequency diplexer using microstrip cells analysis and coupled lines components. International Journal of Microwave and Wireless Technologies, Cambridge University Press and the European Microwave Association, Published online: 15 February 2017, 1–5.Google Scholar
11.Chinig, A, Zbitou, J, Errkik, A, Tajmouati, A, Abdellaoui, L-E, Latrach, M and Tribak, A (2015) Microstrip diplexer using stepped impedance resonators. Wireless Personal Communications 84(4), 2537–2548.Google Scholar
12.Peng, H-S and Chiang, Y-C (2015) Microstrip diplexer constructed with new types of dual-mode ring filters. IEEE Microwave Wireless Component Letters 25(1), 7–9.CrossRefGoogle Scholar
13.Bui, D-H-N, Vuong, TP, Allard, B, Verdier, J and Benech, P (2017) Compact low-loss microstrip diplexer for RF energy harvesting. Electronics Letters 53(8), 552–554.Google Scholar
14.Hayati, M, Noori, L and Adinehvand, A (2012) Compact dual-band bandpass filter using open loop resonator for multimode WLANs. IET, Electronic Letters 48(10), 573–574.Google Scholar
15.Rezaei, A and Noori, L (2017) Tunable microstrip dual-band bandpass filter for WLAN applications. Turkish Journal of Electrical Engineering & Computer Science 25, 1388–1393.Google Scholar