Signal integrity analysis on a microstrip ultra-wideband coupled-line coupler |
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| Authors: | Saffrine Kingsly Sangeetha Velan Malathi Kanagasabai Sangeetha Subbaraj Yogeshwari Panneer Selvam Bhuvaneswari Balasubramaniyan |
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| Institution: | 1. Department of Electronics and Communication Engineering, College of Engineering, Guindy Campus, Anna University, Chennai, India;2. Department of Electronics and Communication Engineering, St. Joseph’s Institute of Technology, Chennai, India;3. Department of Electronics and Communication Engineering, Panimalar Engineering College, Chennai, India |
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| Abstract: | In this paper, a compact, single-section, Ultra-wideband (UWB) coupled-line coupler designed using concentric loop in the signal plane and defect in the ground plane is presented. Bandwidth enhancement is achieved with low coupling at the X-band satellite downlink range to improve the signal strength for defence applications. Return loss greater than 15 dB and isolation greater than 20 dB is achieved over the entire UWB band. The prototype is fabricated and tested to validate the simulation results. Further to detect the quality of the output signal, signal integrity analysis is performed and metrics such as error vector magnitude (EVM), magnitude and phase error, eye pattern, constellation plots and signal to noise ratio are presented for the proposed UWB coupled-line coupler. |
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| Keywords: | Broadband communication measurements microstrip microwave coupler |
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