A Broadband Microstrip 1 x 8 Magic-T Power Divider for ISM Band Array Antenna Applications

Authors Abdelaaziz El Ansari1, Tanvir Islam2 , S.V. Rama Rao3, Agilesh Saravanan4, Sudipta Das5 , Najiba El Amrani El Idrissi1

1Signal System and Component Laboratory, Sidi Mohamed Ben Abdellah University – FST Fez, Morocco

2Department of Electrical and Computer Engineering, University of Houston, Texas, USA

3Department of ECE, NRI Institute of Technology, Agiripalli, Vijayawada, A.P, India

4Department of Electronics and Communication Engineering, Koneru Lakshmaiah Education Foundation, Vaddeswaram, A.P., India

5Department of Electronics and Communication Engineering, IMPS College of Engineering and Technology, India

Е-mail abdelaaziz.elansari1@usmba.ac.ma
Issue Volume 15, Year 2023, Number 3
Dates Received 20 May 2023; revised manuscript received 14 June 2023; published online 30 June 2023
Citation Abdelaaziz El Ansari, Tanvir Islam, et al., J. Nano- Electron. Phys. 15 No 3, 03003 (2023)
DOI https://doi.org/10.21272/jnep.15(3).03003
PACS Number(s) 83.40.Ba
Keywords Broadband antenna, ISM band, Power divider, Array antenna, Magic-T, Broadband power divider, Wilkinson power divider.

This article deals with the design and analysis of a microstrip 1 x 8 magic-T power divider (MTPD) for ISM band (industrial and medical band) array antenna application. First, a basic 1 x 2 magic-T power divider is designed and optimized. It can divide the power supply in two equal parts (3 dB) in-phase agreement. Then a 1 x 4 power divider has been designed using two identical 1 x 2 magic-T basic power dividers; it divides the power supply into four equal parts (6 dB) in-phase agreement. Finally, the proposed broadband 1 x 8 magic-T power divider is constituted by the assembly of two identical 1 x 4 magic-T power dividers; it can divide the power supply into 8 equal parts (9 dB) in phase agreement. As results obtained, the proposed 1 x 8 power divider has a  10 dB wide bandwidth equals about 506 MHz (2.022 GHz to 2.528 GHz) with a minimum reflection coefficient S11 equals about – 19.12 dB at the operating frequency 2.4 GHz. Moreover, the module of the transmission coefficients (S12, S13, S14, S16, S16, S17, S18 and S19) equal about – 9 dB with a negligible phase shift equals to 2.8° between the output signals. The design and simulation results of the proposed 1 x 8 power divider is carried out by HFSS EM simulator using the substrate Rogers RT/duroid 5880 with the total size 424 x 49 x 1.56 mm3. The proposed power divider is a potential candidate to feed an array antenna, amplifiers and modulators of eight elements in the ISM band around 2.4 GHz (2.022 GHz-2.528 GHz).

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