CMOS equivalent time sampling of Gaussian monocycle pulse for confocal imaging

Seo, Yuji; Sogo, Kenta; Toya, Akihiro; Sugitani, Takumi; Azhari, Afreen; Xiao, Xia; Kikkawa, Takamaro

doi:10.1109/biocas.2014.6981661

Cited by 9 publications

(20 citation statements)

References 13 publications

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“… Figure 29 shows the measurement setup with CMOS Gaussian monocycle pulse (GMP) transmitter developed by Hiroshima University [32]. Also, Figure 30 shows a GMP equivalent time sampling circuit for confocal imaging developed by a Hiroshima University team [33]. …”

Section: Microwave Breast Imagingmentioning

confidence: 99%

See 1 more Smart Citation

Recent Advances in Microwave Imaging for Breast Cancer Detection

Kwon

Lee

2016

International Journal of Biomedical Imaging

157

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Breast cancer is a disease that occurs most often in female cancer patients. Early detection can significantly reduce the mortality rate. Microwave breast imaging, which is noninvasive and harmless to human, offers a promising alternative method to mammography. This paper presents a review of recent advances in microwave imaging for breast cancer detection. We conclude by introducing new research on a microwave imaging system with time-domain measurement that achieves short measurement time and low system cost. In the time-domain measurement system, scan time would take less than 1 sec, and it does not require very expensive equipment such as VNA.

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Section: Microwave Breast Imagingmentioning

confidence: 99%

“…GMP equivalent time sampling measurement setup of Hiroshima University [33]. Image copyright IEEE, used with permission.…”

Section: Figurementioning

confidence: 99%

Recent Advances in Microwave Imaging for Breast Cancer Detection

Kwon

Lee

2016

International Journal of Biomedical Imaging

157

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“…The single‐pole–multiple‐throw (SPMT) radio frequency (RF) switch is an important building block in various complementary metal oxide semiconductor (CMOS) control circuits, such as in radar systems, tumor detection in biomedical applications, phase shifters, multibeam applications, and multiband selection communication systems…”

Section: Introductionmentioning

confidence: 99%

“…Recently, research on microwave radar‐based breast tumor detection systems has gained popularity for eliminating the associated problems of ionized radiation and painful breast compression of X‐ray mammography. In a radar‐based microwave tumor detection system, a 3‐ to 10‐GHz ultra‐wideband (UWB) CMOS‐integrated transmitter (Tx) and receiver (Rx) are used while controlling antennas by the UWB switching matrix . In the previous studies, a conventional mechanical double‐pole–16‐throw switching matrix was utilized to control 16 miniature radar antennas.…”

Section: Introductionmentioning

confidence: 99%

A 2‐ to 12‐GHz 65‐nm transmit/receive CMOS DP8T switching matrix for ultra‐wideband antenna arrays

Azhari

Kikkawa

2019

Circuit Theory & Apps

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An ultra-wideband 2-to 12-GHz transmit/receive (T/R) double-pole-eightthrow (DP8T) switching matrix is developed with a 65-nm complementary metal oxide semiconductor (CMOS) process for a radar-based breast cancer detection system. The measured average insertion losses are 5.2, 7, and 10.6 dB at 2, 6, and 12 GHz, respectively, with input and output matching bandwidths of 2 to 12 GHz and a third-order input intercept point (IIP3) of 31 dBm at 8 GHz. The power consumption is less than 1 mW for a 1.2-V power supply. To the best of the authors' knowledge, this is the first reported DP8T CMOS switching matrix to replace the conventional mechanical switch to control a portable radar antenna.

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“…This switching matrix is usually fabricated by a custom-built cascade of electromechanical switches [13], [23], or as a commercially available device [14], [15]. In addition, microwave systems for medical purposes other than breast cancer also often require a switching matrix, such as those in head imaging and stroke detection [21], [22]; currently, these systems use electromechanical switches.…”

Section: Introductionmentioning

confidence: 99%

A Time-Domain Microwave System for Breast Cancer Detection Using a Flexible Circuit Board

Santorelli

Porter

Kang

et al. 2015

IEEE Trans. Instrum. Meas.

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We present the design of a flexible multilayer circuit board for use in a custom-built microwave system for breast health monitoring. The flexible circuit features both an integrated solid-state switching network and 16 wideband antennas, which transmit short-duration pulses into the breast tissues and receive the backscattered responses. By integrating the switching matrix and the antenna array on the same substrate, we reduce the overall cost and size of the system in comparison with previously demonstrated systems in the literature. We characterize the performance of the flexible circuit board using our clinically tested experimental system and demonstrate its functionality through successful imaging of dielectrically realistic breast phantoms that simulate the presence of a tumor. This represents a step toward a more patient-friendly, compact, cost-effective, and wearable design in contrast to previous systems in the literature that required a clinical table or used bulky rigid antenna housings and electromechanical switching networks. Emily Porter (S'11) received the B.Eng. and M.Eng. degrees in electrical engineering from McGill University, Montreal, QC, Canada, in 2009 and 2010, respectively, where she is currently pursuing the Ph.D. degree in electrical engineering.She is involved in research on applied and computational electromagnetics. Her current research interests include the medical applications of microwaves, flexible antennas, the design of realistic breast phantoms and models, and the development of a wearable prototype for breast health monitoring using microwave radar.

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CMOS equivalent time sampling of Gaussian monocycle pulse for confocal imaging

Cited by 9 publications

References 13 publications

Recent Advances in Microwave Imaging for Breast Cancer Detection

Recent Advances in Microwave Imaging for Breast Cancer Detection

A 2‐ to 12‐GHz 65‐nm transmit/receive CMOS DP8T switching matrix for ultra‐wideband antenna arrays

A Time-Domain Microwave System for Breast Cancer Detection Using a Flexible Circuit Board

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