A UWB Probe for Early Breast Tumor Detection
- VernacularTitle:用于早期乳腺癌检测的超宽带微波探头设计
- Author:
Yanru LI
;
Xin LAI
;
Gang WANG
- Publication Type:Journal Article
- Keywords:
breast tumor;
ultra-wideband (UWB) antenna;
probe
- From:
Chinese Medical Equipment Journal
2003;0(10):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective Ultra-wideband (UWB) microwave imaging is one of the promising alternatives for breast tumor detection, which can provide the desired high resolution and high sensitivity. Methods For UWB microwave early breast tumor detection, a UWB antenna with small size and compact structure is generally desired. To meet the demands of UWB microwave imaging and detection, a novel compact UWB probe is developed and tested. The probe is a combination of an exponentially-flared TEM horn and a pyramidal back-cavity, where the pyramidal back-cavity is employed to block back and side radiation. To increase the operation bandwidth, a low-frequency compensation loop loaded with resistors and a dielectric material block at the throat of TEM horn are added to the probe. Results The compact probe is fabricated and tested by vector network analyzer E8362B, and the results demonstrate an operation frequency band ranging from 1.36GHz to 20GHz for return loss under -10dB. Conclusion The probe can meet the needs of UWB microwave imaging for the early breast tumor detection.