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Team Members:

  1. Amit Kumar (20EE17J06003)
  2. Anuroop Bajpai (20EE17A06004)
  3. Khushbu Singh Raghav (20EE17A06001)
  4. Khushbu (20EE18A06002)

Societal Project�On�Development of an Environmental Microwave Pollution Monitoring Device�

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CSIR-Central Electronics Engineering Research Institute Pilani, Rajasthan, India

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Societal Project

Title: Development of an Environmental Microwave Pollution Monitoring Device

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Focus Area: Means of Protecting Environment and Affordable Health Care

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Scope:

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Fig. 1 Block diagram of proposed device

S. No.

Name of Team Member

Key Responsibility

1.

Anuroop Bajpai

Design and development of a suitable antenna to collect the microwave radiation present in the environment.

2.

Khushbu Singh Raghav

Design of impedance matching network for the maximum power transfer from the antenna to the detector circuit.

3.

Amit Kumar

Development of the detector circuit to convert received microwave signal to DC signal

4.

Khushbu Mehta

Development of the read-out circuit to display the magnitude of microwave radiation present in the environment

    • Microwave intensity measurement device to detect and measure the environmental microwave pollution
    • Create awareness among the common people about the long term negative impact of the electromagnetic radiation on their health.

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Impedance Matching Network

Detector

Circuit

Read-out

Circuit

Antenna

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Motivation

Biological Effects

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  1. Headaches
  2. Sleep disruption
  3. Dizziness
  4. Depression
  5. Fatigue
  6. Visual disorders
  7. Cardiovascular problems

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8. Ear damage

9. Skin problem

10. Chances of tumor

11. Immune system degradation

12. Neurodegenerative disorders

13. DNA damage

14. Palpitations of the heart

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Why Microwave Pollution monitoring is needed?

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Background Information

  • Rapid growth in the Telecom, Internet of Things and Artificial Intelligence sector

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  • Sources of EM/RF Radiation

a) Cellular towers

b) Mobile Units, Wi-Fi, Routers

c) Microwave & Electric Ovens

d) TV, Radio, PC, Refrigerators

e) Vacuum Cleaners

Fig.2. Different sources of EM/RF radiation

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Revised ICNIRP/IEEE Exposure Limit

Frequency Range

E-Field Strength

(V/m)

H-Field Strength (A/m)

Power Density (W/Sq.m)

400MHz to 2000MHz

0.434f ½

0.0011f ½

f/2000

2GHz to 300GHz

19.29

0.05

1

Table 1: The present limits/levels for antennae (Base Station) EMF emissions for general public exposure and these are revised in January 2013 [3].

[1] M. D. Bhawan, J. L. N. Marg, "Information paper On Effects of Electromagnetic Field Radiation from Mobile Towers and Handsets", Telecom Regulatory Authority of India, July 2014.

Frequency

(10 MHz to 10GHz)

ICNIRP SAR Limits

Revised SAR limits Effective from 01.09.2012

General Public Exposure

2.0 W/Kg

1.6 W/Kg 

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  • Antenna collects EM/RF radiation
  • Impedance matching network transfers maximum power to I/P circuit
  • AC signal generated at detector terminal I/P
  • Detector converts AC signal to DC component
  • Read-out circuit converts DC signal into readable format

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Fig.3.Schematic Diagram of the Radiation Intensity Meter

Methodology

Impedance Matching Network

Detector Circuit

Read Out Circuit

Antenna retrieves RF energy

DC

Base station satellite TV Radio

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Thank you

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