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# IEEE Transactions on Microwave Theory and Techniques

## Volume 61 Issue 5  Part 2 • May 2013

This issue contains several parts.Go to:  Part 1

## Filter Results

Displaying Results 1 - 25 of 36

Publication Year: 2013, Page(s):C1 - C4
| PDF (177 KB)
• ### IEEE Transactions on Microwave Theory and Techniques publication information

Publication Year: 2013, Page(s): C2
| PDF (144 KB)
• ### Guest Editorial

Publication Year: 2013, Page(s):1977 - 1979
| PDF (376 KB) | HTML
• ### Microwave Exposure Systems for In Vivo Biological Experiments: A Systematic Review

Publication Year: 2013, Page(s):1980 - 1993
Cited by:  Papers (18)
| | PDF (1519 KB) | HTML

This paper provides a systematic review and classification of in vivo microwave exposure systems used from 1999 for bioelectromagnetic investigations. The main features of each system's typology are presented and discussed for different types of experiments. From our critical analysis, some key issues have been identified and addressed concerning the importance of reliable dosimetric characterizat... View full abstract»

• ### A Waveguide Applicator for In Vitro Exposures to Single or Multiple ICT Frequencies

Publication Year: 2013, Page(s):1994 - 2004
Cited by:  Papers (1)
| | PDF (2295 KB) | HTML

A standardized exposure device, already used at 1.95 GHz for in vitro bioelectromagnetic studies, has been further characterized and upgraded for exposing cell cultures to single or multiple frequencies used by information and communication technologies, such as GSM, Universal Mobile Telecommunication System, and Wi-Fi systems. The applicator consists of a customized WR-430 waveguide, and cell cul... View full abstract»

• ### Enhancing Exposure Efficiency and Uniformity Using a Choke Ring Antenna: Application to Bioelectromagnetic Studies at 60 GHz

Publication Year: 2013, Page(s):2005 - 2014
Cited by:  Papers (10)
| | PDF (2222 KB) | HTML

An effective solution for increasing the exposure uniformity and efficiency of biological samples in in vitro bioelectromagnetic experiments at 60 GHz is proposed by introducing a novel choke ring antenna (CRA). The CRA is optimized to provide a uniform exposure of samples, whose dimensions are equivalent to those of a standard 35-mm Petri dish, positioned close to the antenna aperture, i.e., 10-2... View full abstract»

• ### Experimental Microdosimetry Techniques for Biological Cells Exposed to Nanosecond Pulsed Electric Fields Using Microfluorimetry

Publication Year: 2013, Page(s):2015 - 2022
Cited by:  Papers (18)
| | PDF (1247 KB) | HTML

In the last decade, high-intensity pulsed electric fields with nanosecond durations (3-300 ns) have found breakthrough biomedical applications, e.g., in cancer treatment and gene therapy; however, the physical mechanisms underlying the interaction between nanosecond pulsed electric fields (nsPEFs) and cells, tissues, or organs are not yet fully elucidated. The precise knowledge of the electromagne... View full abstract»

• ### Recent Advances in Microwave-Based Dielectric Spectroscopy at the Cellular Level for Cancer Investigations

Publication Year: 2013, Page(s):2023 - 2030
Cited by:  Papers (54)
| | PDF (1248 KB) | HTML

Cancer remains a leading cause of death in the world. To overcome this problem, it is necessary to develop new analysis tools, in complementarity to existing ones, to enable the early diagnostic of the diseases, personalized treatment, and further fundamental cancer mechanisms understanding. In this context, microwave-based and millimeter-wave-based dielectric spectroscopy performed at the cellula... View full abstract»

• ### Feasibility for Microwaves Energy to Affect Biological Systems Via Nonthermal Mechanisms: A Systematic Approach

Publication Year: 2013, Page(s):2031 - 2045
Cited by:  Papers (33)
| | PDF (1509 KB) | HTML

The understanding of possible nonthermal bio-effects has been an open question during the last five decades. In this paper, the authors present a critical literature review of the models of the interaction mechanisms, together with an overview of all the publications finding positive results for in vitro and in vivo studies. The systematic approach consisted of pooling together the positive studie... View full abstract»

• ### A Review on Recent Advances in Doppler Radar Sensors for Noncontact Healthcare Monitoring

Publication Year: 2013, Page(s):2046 - 2060
Cited by:  Papers (145)
| | PDF (2408 KB) | HTML

This paper reviews recent advances in biomedical and healthcare applications of Doppler radar that remotely detects heartbeat and respiration of a human subject. In the last decade, new front-end architectures, baseband signal processing methods, and system-level integrations have been proposed by many researchers in this field to improve the detection accuracy and robustness. The advantages of no... View full abstract»

• ### Analysis of an Indoor Biomedical Radar-Based System for Health Monitoring

Publication Year: 2013, Page(s):2061 - 2068
Cited by:  Papers (54)
| | PDF (1363 KB) | HTML

Innovative technology approaches have been increasingly investigated for the last two decades aiming at human-being long-term monitoring. However, current solutions suffer from critical limitations. In this paper, a complete system for contactless health-monitoring in home environment is presented. For the first time, radar, wireless communications, and data processing techniques are combined, ena... View full abstract»

• ### Circularly Polarized Ultra-Wideband Radar System for Vital Signs Monitoring

Publication Year: 2013, Page(s):2069 - 2075
Cited by:  Papers (5)
| | PDF (1849 KB) | HTML

A robust contactless vital signs monitoring system using circularly polarized ultra-wideband (UWB) radar is presented. The design of the proposed UWB radar system is based on a time-expanded correlation architecture. The circularly polarized antenna array of the radar has an axial ratio bandwidth from 3 to 10 GHz. Use of circular polarization has demonstrated improved accuracy for vital signs moni... View full abstract»

• ### IR-UWB Radar Demonstrator for Ultra-Fine Movement Detection and Vital-Sign Monitoring

Publication Year: 2013, Page(s):2076 - 2085
Cited by:  Papers (43)  |  Patents (1)
| | PDF (1187 KB) | HTML

In this paper an impulse-radio ultra-wideband (IR-UWB) hardware demonstrator is presented, which can be used as a radar sensor for highly precise object tracking and breath-rate sensing. The hardware consists of an impulse generator integrated circuit (IC) in the transmitter and a correlator IC with an integrating baseband circuit as correlation receiver. The radiated impulse is close to a fifth G... View full abstract»

• ### A Novel Method for Respiration-Like Clutter Cancellation in Life Detection by Dual-Frequency IR-UWB Radar

Publication Year: 2013, Page(s):2086 - 2092
Cited by:  Papers (26)
| | PDF (1423 KB) | HTML

Detection of trapped survivors under collapsed buildings using impulse-radio ultra-wideband (IR-UWB) radar has become an important research topic. However, due to the jitter or drift of the radar, clutter reflected from walls or rubble is similar to the human respiratory response in some scenarios. Thus, it becomes difficult to determine the presence or absence of the survivor under ruins. In this... View full abstract»

• ### Six-Port Radar Sensor for Remote Respiration Rate and Heartbeat Vital-Sign Monitoring

Publication Year: 2013, Page(s):2093 - 2100
Cited by:  Papers (29)
| | PDF (1720 KB) | HTML

A novel remote respiration and heartbeat monitoring sensor is presented. The device is a monostatic radar based on a six-port interferometer operating a continuous-wave signal at 24 GHz and a radiated power of less than 3 μW . Minor mechanical movements of the patient's body caused by the respiration as well as heartbeat can be tracked by analyzing the phase modulation of the backscattered ... View full abstract»

• ### 1-D Microwave Imaging of Human Cardiac Motion: An Ab-Initio Investigation

Publication Year: 2013, Page(s):2101 - 2107
Cited by:  Papers (31)
| | PDF (1480 KB) | HTML

This paper presents an experimental investigation that demonstrates the possibility of 1-D imaging of human cardiac motion using a microwave Doppler sensor. Compared with the previous works that primarily monitored human respiration and heartbeat rates, the reconstruction of cardiac motion in this work will provide more information for time-domain clinical diagnosis. To fully recover the motion in... View full abstract»

• ### An Integrated Microwave Imaging Radar With Planar Antennas for Breast Cancer Detection

Publication Year: 2013, Page(s):2108 - 2118
Cited by:  Papers (32)
| | PDF (1643 KB) | HTML

The system design of an integrated microwave imaging radar for the diagnostic screening of breasts cancer is presented. A custom integrated circuit implemented in a 65-nm CMOS technology and a pair of patch antennas realized on a planar laminate are proposed as the basic module of the imaging antenna array. The radar operates on the broad frequency range from 2 to 16 GHz with a dynamic range of 10... View full abstract»

• ### Microwave Breast Imaging With a Monostatic Radar-Based System: A Study of Application to Patients

Publication Year: 2013, Page(s):2119 - 2128
Cited by:  Papers (93)
| | PDF (1759 KB) | HTML

A prototype microwave breast imaging system is used to scan a small group of patients. The prototype implements a monostatic radar-based approach to microwave imaging and utilizes ultra-wideband signals. Eight patients were successfully scanned, and several of the resulting images show responses consistent with the clinical patient histories. These encouraging results motivate further studies of m... View full abstract»

• ### Tomographic Microwave Imaging With Incorporated Prior Spatial Information

Publication Year: 2013, Page(s):2129 - 2136
Cited by:  Papers (24)
| | PDF (1425 KB) | HTML

We have implemented a soft prior regularization technique for microwave tomographic imaging that exploits spatial prior information from alternative imaging modalities. We have previously demonstrated in both simulation and phantom experiments that this approach is capable of improved property recovery compared with our conventional Tikhonov regularized method. An important concern with this type ... View full abstract»

• ### Defining regions of interest for microwave imaging using near-field reflection data

Publication Year: 2013, Page(s):2137 - 2145
Cited by:  Papers (9)
| | PDF (895 KB) | HTML

Microwave imaging benefits from information on the internal structure of the object of interest. Previously, we developed a tool to define regions dominated by a particular material and tested this approach with 2-D simulations of breast models. In this paper, we apply the technique to experimental data with the goal to extract an object's internal structural information using radar-based techniqu... View full abstract»

• ### Fetus MRI at 7 T: ${B}_{1}$ Shimming Strategy and SAR Safety Implications

Publication Year: 2013, Page(s):2146 - 2152
Cited by:  Papers (4)
| | PDF (1022 KB) | HTML

Fetus magnetic resonance imaging (MRI) has been rapidly developed at high fields due to its particular advantages in demonstrating pathology of the brain, lungs, complex syndromes, and conditions associated with reduction of amniotic fluid. Research regarding the safety of fetus MRI at 1.5 and 3 T has been reported, however, it has not been explored at 7 T. In this study, the B1 ... View full abstract»

• ### Calculation Errors of the Electric Field Induced in a Human Body Under Quasi-Static Approximation Conditions

Publication Year: 2013, Page(s):2153 - 2160
Cited by:  Papers (13)
| | PDF (1551 KB) | HTML

We analytically compute the internal electric fields in a spherical model and numerically calculate the fields in the head of a realistic human model exposed to the incident magnetic fields only or to both the incident electric and magnetic fields. We then investigate the effects of ignoring the electric fields incident on a biological object that is exposed to electromagnetic fields (EMFs) from a... View full abstract»

• ### SAR, SA, and Temperature Variation in the Human Head Caused by IR-UWB Implants Operating at 4 GHz

Publication Year: 2013, Page(s):2161 - 2169
Cited by:  Papers (17)
| | PDF (982 KB) | HTML

With the extensive use of wireless devices within or at close proximity to the human body, electromagnetic effects caused by the interaction between RF waves and human tissues need to be considered with paramount importance. The ultra-wideband (UWB) communication spectrum has recently been utilized in bio-telemetry applications, such as neural recording, brain-computer interfaces, and physiologica... View full abstract»

• ### Analysis of Electromagnetic Fields Induced in Operation of a Wireless Fully Passive Backscattering Neurorecording Microsystem in Emulated Human Head Tissue

Publication Year: 2013, Page(s):2170 - 2176
Cited by:  Papers (14)
| | PDF (1073 KB) | HTML

This paper reports on a fully passive microsystem that wirelessly records and transmits neuropotentials exclusively by means of electromagnetic backscattering techniques, affording substantially simpler circuitry and potentially safer and more reliable approach for implantable wireless neurorecording. A fundamental practical barrier for wireless brain-implantable microsystems includes heat dissipa... View full abstract»

• ### 5.2-GHz RF Power Harvester in 0.18-/spl mu/m CMOS for Implantable Intraocular Pressure Monitoring

Publication Year: 2013, Page(s):2177 - 2184
Cited by:  Papers (19)
| | PDF (1729 KB) | HTML

A first fully integrated 5.2-GHz CMOS-based RF power harvester with an on-chip antenna is presented in this paper. The design is optimized for sensors implanted inside the eye to wirelessly monitor the intraocular pressure of glaucoma patients. It includes a five-stage RF rectifier with an on-chip antenna, a dc voltage limiter, two voltage sensors, a low dropout voltage regulator, and MOSCAP based... View full abstract»

## Aims & Scope

The IEEE Transactions on Microwave Theory and Techniques focuses on that part of engineering and theory associated with microwave/millimeter-wave components, devices, circuits, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, and industrial, activities. Microwave theory and techniques relates to electromagnetic waves usually in the frequency region between a few MHz and a THz; other spectral regions and wave types are included within the scope of the Society whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design..

Full Aims & Scope

## Meet Our Editors

Editor-in-Chief
Luca Perregrini
luca.perregrini@unipv.it

Editor-in-Chief
Jose Carlos Pedro
edit.tmtt@ua.pt