Next Article in Journal
Centrifugal Deposited Au-Pd Core-Shell Nanoparticle Film for Room-Temperature Optical Detection of Hydrogen Gas
Next Article in Special Issue
Sparsity-Driven Reconstruction Technique for Microwave/Millimeter-Wave Computational Imaging
Previous Article in Journal
Least Squares Neural Network-Based Wireless E-Nose System Using an SnO2 Sensor Array
Previous Article in Special Issue
Theory and Measurement of Signal-to-Noise Ratio in Continuous-Wave Noise Radar
Open AccessArticle

Active Sensor for Microwave Tissue Imaging with Bias-Switched Arrays

Department of Electrical and Computer Engineering, McMaster University, Hamilton, ON L8S 4L8, Canada
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Sensors 2018, 18(5), 1447; https://doi.org/10.3390/s18051447
Received: 19 March 2018 / Revised: 25 April 2018 / Accepted: 2 May 2018 / Published: 6 May 2018
(This article belongs to the Special Issue Sensors for Microwave Imaging and Detection)
A prototype of a bias-switched active sensor was developed and measured to establish the achievable dynamic range in a new generation of active arrays for microwave tissue imaging. The sensor integrates a printed slot antenna, a low-noise amplifier (LNA) and an active mixer in a single unit, which is sufficiently small to enable inter-sensor separation distance as small as 12 mm. The sensor’s input covers the bandwidth from 3 GHz to 7.5 GHz. Its output intermediate frequency (IF) is 30 MHz. The sensor is controlled by a simple bias-switching circuit, which switches ON and OFF the bias of the LNA and the mixer simultaneously. It was demonstrated experimentally that the dynamic range of the sensor, as determined by its ON and OFF states, is 109 dB and 118 dB at resolution bandwidths of 1 kHz and 100 Hz, respectively. View Full-Text
Keywords: Microwave imaging; Ultra-wide band; active radio sensor; biased-switched array Microwave imaging; Ultra-wide band; active radio sensor; biased-switched array
Show Figures

Figure 1

MDPI and ACS Style

Foroutan, F.; Nikolova, N.K. Active Sensor for Microwave Tissue Imaging with Bias-Switched Arrays. Sensors 2018, 18, 1447. https://doi.org/10.3390/s18051447

AMA Style

Foroutan F, Nikolova NK. Active Sensor for Microwave Tissue Imaging with Bias-Switched Arrays. Sensors. 2018; 18(5):1447. https://doi.org/10.3390/s18051447

Chicago/Turabian Style

Foroutan, Farzad; Nikolova, Natalia K. 2018. "Active Sensor for Microwave Tissue Imaging with Bias-Switched Arrays" Sensors 18, no. 5: 1447. https://doi.org/10.3390/s18051447

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop