volume | PIER Journals

2010-06-12

Compact Ultra-Wideband Phase Shifter

Mohammad Naser-Moghadasi,

Dr. Mohammad Naser-Moghadasi

Science and Research Branch

Islamic Azad University

Iran

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Gholamreza R. Dadashzadeh,

Dr. Gholamreza R. Dadashzadeh

Faculity of Engineering

Shahed University

Iran

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Abdolmehdi Dadgarpour,

Mr. Abdolmehdi Dadgarpour

Electrical Engineering Department

Islamic Azad University

Iran

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Farid Jolani,

Dr. Farid Jolani

Department of Electrical and Computer Engineering

University of Calgary

Canada

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Bal Singh Virdee

Prof. Bal Singh Virdee

Faculty of Computing

London Metropolitan University

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Progress In Electromagnetics Research Letters, Vol. 15, 89-98, 2010

doi:10.2528/PIERL10032606 | Google Scholar

Abstract

Design of a compact planar phase shifter is described that possesses ultra-wideband (UWB) performance. The proposed device is composed of 50Ω input/output microstrip-lines which are connected to a low-impedance rectangular microstrip patch, and located at close proximity to each other. The common ground-plane incorporates a slot-line terminated with two rectangular slots, which are located under the rectangular patches in order to provide effective electromagnetic coupling between the microstrip-line and slot-line. Thus a phase shifter is realized with ultra-wideband characteristics on a single substrate. The length of the slot-line and width of patch determines the desired phase shift required between the input and output ports. It is demonstrated that the design can provide phase shift anywhere between 4°- 27° across the entire UWB frequency band from 3.1 to 10.6 GHz. The simulated results show fixed phase shift 5.625°± 0.865°, 11.25°± 1.93°and 22.5°± 2.5°with insertion-loss less than 0.5 dB and return loss better than 12 dB across the ultra-wideband frequency span. The phase shifter is relatively compact in size with a dimension of 15×25 mm². The phase shifter was fabricated and its performance measured to validate the simulation results.

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Mohammad Naser-Moghadasi, Gholamreza R. Dadashzadeh, Abdolmehdi Dadgarpour, Farid Jolani, and Bal Singh Virdee, "Compact Ultra-Wideband Phase Shifter," Progress In Electromagnetics Research Letters, Vol. 15, 89-98, 2010.
doi:10.2528/PIERL10032606

References

1. Schiffman, B., "A new class of broadband microwave 90-degree phase shifters," IRE Trans. Microw. Theory Tech., Vol. 6, No. 4, 232-237, Apr. 1958.
doi:10.1109/TMTT.1958.1124543 Google Scholar

2. Free, C. and C. Aitchison, "Improved analysis and design of coupled line phase shifters," IEEE Trans. Microw. Theory Tech., Vol. 43, No. 9, 2126-2131, Sep. 1995.
doi:10.1109/22.414549 Google Scholar

3. Schiffman, B., "Multisection microwave phase-shift network," IEEE Trans. Microw. Theory Tech., Vol. 14, No. 4, 209, Apr. 1966.
doi:10.1109/TMTT.1966.1126220 Google Scholar

4. Shelton, J. P. and J. A. Mosko, "Synthesis and design of wideband equal ripple TEM directional couplers and fixed phase shifters," IEEE Trans. Microw. Theory Tech., Vol. 14, No. 10, 246-252, 462--473, 1966.
doi:10.1109/TMTT.1966.1126305 Google Scholar

5. Guo, Y., Z. Zhang, and L. Ong, "Improved wideband schiffman phase shifter," IEEE Trans. Microw. Theory Tech., Vol. 54, No. 3, 1196-1200, Mar. 2006.
doi:10.1109/TMTT.2005.864105 Google Scholar

6. Taylor, J. and D. Prigel, "Wiggly phase shifters and directional couplers for radio-frequency hybrid-microcircuit applications," IEEE Trans. on Parts, Hybrids and Packaging, Vol. 12, No. 4, 317-323, 1976.
doi:10.1109/TPHP.1976.1135157 Google Scholar

7. Ahn, H. and I. Wolff, "Asymmetric ring-hybrid phase shifters and attenuators," IEEE Trans. Microw. Theory Tech., Vol. 50, No. 4, 1146-1155, 2002.
doi:10.1109/22.993418 Google Scholar

8. Abbosh, A. M., "Ultra-wideband phase shifters," IEEE Trans. Microw. Theory Tech., Vol. 55, No. 9, 1935-1939, Sep. 2007.
doi:10.1109/TMTT.2007.904051 Google Scholar

9. Cheng, Y. J., W. Hong, and K. Wu, "Broadband self-compensating phase shifter combining delay line and equal-length unequal-width phaser," IEEE Trans. Microw. Theory Tech., Vol. 58, No. 1, 203-210, Jan. 2010.
doi:10.1109/TMTT.2009.2035942 Google Scholar

10. Knorr, J., "Slot-line transitions," IEEE Trans. Microw. Theory Tech., Vol. 22, No. 5, 548-554, May 1974.
doi:10.1109/TMTT.1974.1128278 Google Scholar