A 5.8 GHz RF Receiver Front-End with 77.6 dB Dynamic Range AGC for a DSRC Transceiver

Reza E Rad,Sungjin Kim,Keum Cheol Hwang,Younggun Pu,Kang-Yoon Lee,Arash Hejazi,Joon Tae Kim,Youngoo Yang

doi:10.1109/access.2022.3142913

Reza E Rad, Sungjin Kim + Show 6 more

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Journal: IEEE Access	Publication Date: Jan 1, 2022
Citations: 2	License type: CC BY 4.0

Affiliation: Sungkyunkwan University, Konkuk University

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This paper presents a 5.8 GHz highly sensitive, high-dynamic-range RF receiver front-end with Automatic-Gain Control (AGC) and a high image-rejection for a Dedicated Short-Range Communication (DSRC) application. It is formed by a transceiver common matching, a single to differential Low-Noise Amplifier (LNA), an active mixer with an Image Rejection Filter, and an AGC unit. The proposed AGC unit is composed of a power-detector over the intermediate-frequency signals of the downconverter mixer. The power detector produces a wide dynamic range response signal, which eases the controllability of the AGC unit. In addition, external components are minimized, and area occupation is optimized. The proposed RF-FE is fabricated and measured in a 130-nm RF CMOS process. Experimental results show an overall dynamic range of 77.6 dB while a high sensitivity performance to an input power level of −85 dBm is measured. An overall gain of 26.4 dB for the RF-FE is obtained. The input referred P1dB is measured to be around −28.3 dBm. The 2-stage RC poly-phase filter that is applied to reject the image signal results in a maximum image rejection ratio of 39 dB.

Highlights

Intelligent Transportation Systems (ITS) have been recognized as an essential research trend in Information and Communication Technology (ICT)
The Dedicated Short Range Communication (DSRC) is a wireless communication based on IEEE 802.11p [1], which is an amendment to the IEEE
The Power Detectors (PDs) is located after the mixer over the Intermediate Frequency (IF) signals

Summary

INTRODUCTION

Intelligent Transportation Systems (ITS) have been recognized as an essential research trend in Information and Communication Technology (ICT) Interesting applications such as vehicular safety, Electronic Toll Collections (ETC), and traffic control applications are the examples that motivate researchers to enhance new research and design across a wide range of new advances. The PD is located after the mixer over the Intermediate Frequency (IF) signals The benefit of this implementation is to avoid an additional matching network for the power detector. The proposed implementation does not need any matching network for the PD which results in a smaller area occupation It is satisfying the requirements for the reaction response. In compare with the RSSI, it is more area efficient

PROPOSED RF FRONT END DESIGN ARCHITECTURE

EXPERIMENTAL MEASUREMENT

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