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Updated: Feb 2, 2026

Compact Quantum Dots for Single-molecule Imaging
Published on: October 9, 2012
Technical Note: Design of a handheld dipole antenna for a compact thermoacoustic imaging system
Lin Huang1,2, Shaoli Ge1,2, Zhu Zheng1,2
1School of Electronic Science and Engineering (National Exemplary School of Microelectronics), University of Electronic Science and Technology of China, Chengdu, 611731, China.
Purpose:
Conventional antenna used in thermoacoustic imaging (TAI) is often bulky, making it difficult to translate TAI from the bench to the clinic. In this paper, we proposed a handheld dipole antenna which will be a good candidate for the construction of a compact TAI system.
Methods:
Here, we propose a TAI system based on a handheld dipole antenna with an aperture of 6 cm and a weight of 230 g. Compensation of the electric field attenuation for such a system was also investigated.
Results:
Compared to the conventional open-ended waveguide and pyramidal horn antenna used in TAI, our results reveal that the electric field attenuation induced distortion is effectively reduced by using the attenuation factor 1/r2 for compensation and that the handheld dipole antenna provides the highest efficiency of microwave delivery.
Conclusions:
This study suggests that the handheld dipole antenna has the potential to be utilized for the construction of a compact TAI system, making TAI more suitable for preclinical and clinical applications.
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