Three-dimensional super-wideband micro-antenna for high-resolution millimeter-wave medical imaging

Mirbeik, Amir; Tavassoli, Vahid; Ayazi, Farrokh; Tavassolian, Negar

doi:10.1109/embc.2014.6944747

Cited by 3 publications

(4 citation statements)

References 16 publications

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“…The µ-HSA is a suitable candidate for a wide range of applications due to its dual-mode operation and ultra-wide bandwidth. The differential mode is of particular interest for imaging and radar systems, and we recently demonstrated this using numerical simulations [17]. The common mode is of interest for high-speed mm-wave wireless communications [15].…”

Section: Introductionmentioning

confidence: 91%

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Three‐dimensional, ultra‐wideband micromachined millimetre‐wave hemispherical shell antenna: theoretical concept and calibration

Mirbeik

Tavassoli

Ayazi

et al. 2016

IET Microwaves, Antennas & Propagation

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This study presents a theoretical design study of a novel three-dimensional micromachined hemispherical shell antenna for ultra-wideband millimetre-wave imaging applications. The antenna is composed of a hemispherical metallic shell which is suspended on top of a high-resistivity silicon substrate using a thin silicon stem. The antenna exhibits two different operational modes and an exceptionally wide bandwidth of more than 80 GHz at the centre frequency of 120 GHz. Simulation results indicate that the antenna performance is highly sensitive to geometrical variations and hence to fabrication inaccuracies. Performing a complete sensitivity analysis using full-wave simulations requires numerous simulation steps and is therefore time-intensive and impractical. This study provides closed-form solutions for all performance metrics of the antenna, followed by a comprehensive theoretical-based sensitivity analysis for evaluating the effects of fabrication imperfections on its bandwidth. The antenna structure is then calibrated for ultra-wideband operations and low sensitivities to fabrication inaccuracies.

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Section: Introductionmentioning

confidence: 91%

“…A coefficient of 2π is employed in directivity calculations instead of the 4π generally used as only the radiation above the ground plane is considered. The maximum radiation intensity, U max , is given by (see (17))…”

Section: Radiation Pattern Of a Circular Array Of Infinitesimal Dipolesmentioning

confidence: 99%

Three‐dimensional, ultra‐wideband micromachined millimetre‐wave hemispherical shell antenna: theoretical concept and calibration

Mirbeik

Tavassoli

Ayazi

et al. 2016

IET Microwaves, Antennas & Propagation

Self Cite

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“…The high-resolution millimeter-wave medical imaging requires the use of very wideband, high-resolution, integrable antenna structure with symmetrical gain pattern for balanced and symmetrical scanning [155].…”

Section: B Medical Applicationsmentioning

confidence: 99%

An Inclusive Survey on Array Antenna Design for Millimeter-Wave Communications

2019

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The enormous growth of wireless data traffic in recent years has made the millimeter-wave (mm-wave) technology as a good fit for high-speed communication systems. Extensive works are continuing from the device to system, to the radio architecture, to the network to support the communication in mm-wave frequency ranges. To support this extensive high data rate, beam forming is found to be the key-enabling technology. Hence, an array antenna design is an extremely important issue. The beam-forming arrays are chosen to achieve the desired link capacity considering the high path loss and atmospheric loss at mm-wave frequencies and also to increase the coverage of the mm-wave communication system. There are diverse design challenges of the array due to the small size, use of large numbers of antennas in close vicinity, integration with radio-frequency (RF) front ends, hardware constraints, and so on. This paper focuses on the evolution and development of mm-wave array antenna and its implementation for wireless communication and numerous other related areas. The scope of the discussion is extended on the reported works in every sphere of mm-wave antenna array design, including the selection of antenna elements, array configurations, feed mechanism, integration with front-end circuitry to understand the effects on system performance, and the underlying reason of it. The new design aspects and research directions are unfolded as a result of this discussion.INDEX TERMS Mm-wave communication, antenna array design, array configuration, feed mechanism, RF circuit. SASWATI GHOSH received the Ph.D. degree from IIT Kharagpur, India, where she is currently a Postdoctoral Research Fellow with G. S. Sanyal School of Telecommunications. She is involved in active research in the area of antenna design for 60-GHz communication, RF energy harvesting, EMI/EMC measurements and EMI sensors, estimation of EMC of high-frequency electronic systems, and EMI/EMC/ESD on spacecraft bodies. She has 15 international journal publications, three book chapters, and more than 60 publications, including national journals and national/international conference proceedings. She serves as a Reviewer for several international journals. She had received the Young Scientist Fellowship twice and the Women Scientist Fellowship from the Department of Science and Technology, Government of India. DEBARATI SEN received the Ph.D. degree in telecommunication engineering from IIT Kharagpur, Kharagpur, India, where she is currently an Assistant Professor. Her research interests include wireless and optical communication systems, mostly on MB-OFDM, synchronization, equalization, UWB, BAN, green communications, 60-GHz communications, and baseband algorithm design for coherent optical communications.

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“…Since the fully symmetric structures with higher performance were identified in recent years, research on micro 3-D symmetric structures has been emphasized. Micro-hemispheric structures have been demonstrated to achieve high Q and high precision potential, while many different manufacturing processes such as glass blowing, silicon etching, and integrated precision machining have been studied to create high precision 3-D hemispherical resonators [ 8 , 9 , 10 , 11 ]. As the exploration of new fabrication technology has made the micro HRG become a new research hotspot, the development potential of symmetrical structures has come to be highly regarded at the same time [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of a Center Support Quadruple Mass Gyroscope (CSQMG)

Zhang

Zhou

Yin

et al. 2016

Sensors

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This paper reports a more complete description of the design process of the Center Support Quadruple Mass Gyroscope (CSQMG), a gyro expected to provide breakthrough performance for flat structures. The operation of the CSQMG is based on four lumped masses in a circumferential symmetric distribution, oscillating in anti-phase motion, and providing differential signal extraction. With its 4-fold symmetrical axes pattern, the CSQMG achieves a similar operation mode to Hemispherical Resonant Gyroscopes (HRGs). Compared to the conventional flat design, four Y-shaped coupling beams are used in this new pattern in order to adjust mode distribution and enhance the synchronization mechanism of operation modes. For the purpose of obtaining the optimal design of the CSQMG, a kind of applicative optimization flow is developed with a comprehensive derivation of the operation mode coordination, the pseudo mode inhibition, and the lumped mass twisting motion elimination. The experimental characterization of the CSQMG was performed at room temperature, and the center operation frequency is 6.8 kHz after tuning. Experiments show an Allan variance stability 0.12°/h (@100 s) and a white noise level about 0.72°/h/√Hz, which means that the CSQMG possesses great potential to achieve navigation grade performance.

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Three-dimensional super-wideband micro-antenna for high-resolution millimeter-wave medical imaging

Cited by 3 publications

References 16 publications

Three‐dimensional, ultra‐wideband micromachined millimetre‐wave hemispherical shell antenna: theoretical concept and calibration

Three‐dimensional, ultra‐wideband micromachined millimetre‐wave hemispherical shell antenna: theoretical concept and calibration

An Inclusive Survey on Array Antenna Design for Millimeter-Wave Communications

Optimal Design of a Center Support Quadruple Mass Gyroscope (CSQMG)

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