RF Switch Integrated With CSRR Array for Subsurface Imaging of Composite Structures

In this work, a novel RF switchable sensor array based on complementary split ring resonator (CSRR) elements and PIN diodes is presented for subsurface imaging of composite structures. The proposed scheme utilizes a 4\times 4 array of CSRR elements, which can be switched using 4 PIN diodes to faci...

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Bibliographic Details
Published in:IEEE microwave and wireless technology letters (Print) 2024-12, Vol.34 (12), p.1403-1406
Main Authors: Kumari, Ankita, Das, Shilpa P., Govind, Greeshmaja, Akhtar, M. J.
Format: Article
Language:English
Subjects:
Complementary split ring resonator (CSRR)
Composite structures
Frequency measurement
Imaging
Microwave circuits
Microwave imaging
microwave sensors
Permittivity
PIN diode
PIN diodes
Power combiners
power divider
Power dividers
Radio frequency
Resonant frequency
RF switch
Sensor arrays
Switches
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Summary:In this work, a novel RF switchable sensor array based on complementary split ring resonator (CSRR) elements and PIN diodes is presented for subsurface imaging of composite structures. The proposed scheme utilizes a 4\times 4 array of CSRR elements, which can be switched using 4 PIN diodes to facilitate a fast scanning of the test structure without any mechanical movement. The individual elements of the 4\times 4 CSRR array are carefully designed to resonate at four different frequencies to clearly distinguish their response simultaneously. The use of switches along with a 1-4 power divider at the input and a 4-1 power combiner at the output on a single board facilitates a simple two-port setup to conduct the measurement. The applicability of the proposed scheme is demonstrated by retrieving the image and shape of a few composite structures using the designed CSRR array.
ISSN:2771-957X
2771-9588
DOI:10.1109/LMWT.2024.3469780