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Current-Mirror Based Ambient Light Rejection Technique for VLC Receiver

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Ambient light interference is a significant hurdle as it creates unwanted DC current in optical receivers used for visible light communication, infrared communication, etc., that face solar irradiance in the daytime or unwanted light sources such as bulbs at night. This paper presents a current mirror-based receiver topology. By introducing a current-to-voltage converter module, the receiver can handily remove the background interference. A prototype receiver is designed using a 180 nm CMOS process operating at a speed of 160 MHz. It can cancel up to 100 mu A of DC background interference while maintaining a low power dissipation of 7 mW from a 1.8 V supply. Additionally, it achieves a transimpedance gain of 120 dB ohm and an input referred noise of 10 pA/root Hz.
Original languageEnglish
Title of host publication2025 Ieee International Symposium On Circuits And Systems, Iscas
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages4
ISBN (Electronic)9798350356830
ISBN (Print)979-8-3503-5684-7
DOIs
Publication statusPublished - 28 May 2025
Event2025 IEEE International Symposium on Circuits and Systems, ISCAS 2025 - London, United Kingdom
Duration: 25 May 202528 May 2025

Publication series

NameIeee International Symposium On Circuits And Systems

Conference

Conference2025 IEEE International Symposium on Circuits and Systems, ISCAS 2025
Country/TerritoryUnited Kingdom
CityLondon
Period25/05/2528/05/25

Keywords

  • Ambient light interference
  • Optical receiver
  • Tia
  • Transimpedance amplifier
  • Visible light communication

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