# IEEE Transactions on Microwave Theory and Techniques

## Filter Results

Displaying Results 1 - 18 of 18

Publication Year: 2014, Page(s):C1 - C4
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• ### IEEE Transactions on Microwave Theory and Techniques publication information

Publication Year: 2014, Page(s): C2
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• ### Dyadic Green's Function of a Nonspherical Model of the Human Torso

Publication Year: 2014, Page(s):1265 - 1274
Cited by:  Papers (2)
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The proposed model of the human torso is principally a host sphere, filled with muscle tissue, wherein three eccentric spherical inclusions are accommodated. Two of them are twins and represent the lungs, whereas the third, referred to as the abdomen, represents all human organs beneath the diaphragm. The host sphere is surrounded by two concentric layers, which represent skin and fat. The dyadic ... View full abstract»

• ### A Novel 3-D HIE-FDTD Method With One-Step Leapfrog Scheme

Publication Year: 2014, Page(s):1275 - 1283
Cited by:  Papers (7)
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This paper presents a novel 3-D leapfrog hybrid implicit-explicit finite-difference time-domain (HIE-FDTD) method. By first adopting the Peaceman-Rachford scheme and then the one-step leapfrog scheme, the proposed HIE-FDTD algorithm is implemented in the same manner as the traditional finite-difference time-domain method in which the implicit scheme was applied only in the direction where a fine g... View full abstract»

• ### A Fast Algorithm to Simulate 2-D Electromagnetic Field for Objects With Gradually Time-Varying Dielectric Permittivity

Publication Year: 2014, Page(s):1284 - 1290
Cited by:  Papers (1)
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In some cases such as heating objects by microwave power, variation of the temperature in objects changes their dielectric permittivity and then leads to variation of the electromagnetic (EM) field. The commonly adopted method of simulation for the heating procedure is to repeatedly execute the full-wave simulation for each small time intervals, which results in a heavy computation burden. A fast ... View full abstract»

• ### Analysis of Direct and Inverse Problems Related to Circular Waveguides Loaded With Inhomogeneous Lossy Dielectric Objects

Publication Year: 2014, Page(s):1291 - 1300
Cited by:  Papers (5)
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An integral-equation-based analysis for direct and inverse problems related to circular waveguides loaded with inhomogeneous and arbitrarily shaped lossy dielectric material is introduced. The problem is formulated as a system of integral equations composed of the well-known data and object equations, which contain the dyadic Green's function (DGF) of the empty circular waveguide. Both the direct ... View full abstract»

• ### 45-nm CMOS SOI Technology Characterization for Millimeter-Wave Applications

Publication Year: 2014, Page(s):1301 - 1311
Cited by:  Papers (15)
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This paper presents an in-depth study of a 45-nm CMOS silicon-on-insulator (SOI) technology. Several transistor test cells are characterized and the effect of finger width, gate contact, and gate poly pitch on transistor performance is analyzed. The measured peak ft is 264 GHz for a 30 × 1007 nm single-gate contact relaxed-pitch transistor and the best fmax of 283 GHz is achieved by a 58 &#... View full abstract»

• ### Multi-Way and Poly-Phase Aligned Feed-Forward Differential Phase Shifters

Publication Year: 2014, Page(s):1312 - 1321
Cited by:  Papers (3)
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Traditional two-way passive differential phase shifters (DPSs) are comprised of a reference line and a delay line. To realize a passive multi-way poly-phase DPS, a single reference line is not possible and a cascaded network becomes necessary. This results in both a cumbersome and complex structure, with large phase error that propagates through the network. A novel phase shifter is presented here... View full abstract»

• ### $Ka$ -Band Multiple Feed per Beam Focal Array Using Interleaved Couplers

Publication Year: 2014, Page(s):1322 - 1329
Cited by:  Papers (6)
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In this paper, an original focal array for multibeam antenna is presented. It is based on multiple feed per beam (MFB) geometry. Each beam is produced by a cluster of feed horns illuminating a parabolic reflector. Three adjacent clusters of the focal array overlap for enhancing the illumination performance within the size-constrained array lattice. The beam-forming network is the key component and... View full abstract»

• ### Maximally Flat Negative Group-Delay Circuit: A Microwave Transversal Filter Approach

Publication Year: 2014, Page(s):1330 - 1342
Cited by:  Papers (12)
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A comprehensive method to synthesize negative group delay (NGD) in the microwave regime with a maximally flat response is proposed in this paper. This method is based on transversal-filter topologies; it will be shown that by choosing proper coupling coefficients of each tap of a transversal filter, we can realize NGDs with maximally flat characteristics at the output of the transversal filter. Th... View full abstract»

• ### A Miniaturized Unit Cell for Ultra-Broadband Active Millimeter-Wave Frequency Multiplication

Publication Year: 2014, Page(s):1343 - 1351
Cited by:  Papers (4)
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A compact broadband unit cell for the design of broadband frequency multipliers is presented. Based on design methods from moderate frequencies, a novel integrated balanced field-effect transistor architecture is introduced, pushing ultra-broadband balanced frequency multiplication into the high millimeter-wave range. The realized microwave monolithic integrated circuits (MMICs) using this topolog... View full abstract»

• ### Analysis of Envelope-Tracking Power Amplifier Using Mathematical Modeling

Publication Year: 2014, Page(s):1352 - 1362
Cited by:  Papers (17)
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This paper describes analysis of an envelope-tracking power amplifier (ET PA) to show its operational behavior. The RF PA is modeled by sweeping the input power and supply voltage. The RF PA model is composed of three 2-D lookup tables including the amplitude-to-amplitude modulation, amplitude-to-phase modulation, and amplitude-to-efficiency modulation. The hybrid switching supply modulator is als... View full abstract»

• ### Liquid-Permittivity Measurements Using a Rigorously Modeled Overmoded Cavity Resonator

Publication Year: 2014, Page(s):1363 - 1372
Cited by:  Papers (2)
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Permittivity data of liquids is necessary for applications such as dielectric heating, remote sensing, and moisture detection, and is also used for molecular characterization. Dispersive molecular mechanisms occur for field excitations of frequencies mainly above 10 GHz and extending into terahertz and optical frequencies. Around 100 GHz there is less data, due to the frequency limits of microwave... View full abstract»

• ### Solid Phantom for Body-Centric Propagation Measurements at 60 GHz

Publication Year: 2014, Page(s):1373 - 1380
Cited by:  Papers (5)  |  Patents (1)
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The first solid skin-equivalent phantom is developed to characterize the propagation channel for 60-GHz wireless body-centric systems. This phantom is designed to emulate the same reflection coefficient at the air/phantom interface as at the air/skin interface. It is fabricated by combining carbon black powder with polydimethylsiloxane (PDMS) and metallizing the resulting flexible carbon-PDMS comp... View full abstract»

• ### Photonic Technique for Phase Control of Microwave to Terahertz Signals

Publication Year: 2014, Page(s):1381 - 1386
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We present a simple linear photonic technique to achieve fixed or time-varying phase shifts in microwave to terahertz frequency band signals. We show that the wavelength change of an RF modulated optical carrier within the operational band of a photonic filter with a step in the group-delay spectrum results in a broadband linear phase change in the RF signals. We demonstrate the concept experiment... View full abstract»

• ### Application of Linear-Frequency-Modulated Continuous-Wave (LFMCW) Radars for Tracking of Vital Signs

Publication Year: 2014, Page(s):1387 - 1399
Cited by:  Papers (27)
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This paper focuses on the exploitation of linear-frequency-modulated continuous-wave (LFMCW) radars for noncontact range tracking of vital signs, e.g., respiration. Such short-range system combines hardware simplicity and tracking precision, thus outperforming other remote-sensing approaches in the addressed biomedical scenario. A rigorous mathematical analysis of the operating principle of the LF... View full abstract»

• ### Quadrature Imbalance Compensation With Ellipse-Fitting Methods for Microwave Radar Physiological Sensing

Publication Year: 2014, Page(s):1400 - 1408
Cited by:  Papers (6)
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Accurate displacement measurement using quadrature Doppler radar requires amplitudes and phase imbalance compensation. Previously, this imbalance calibration has required cumbersome hardware modifications and thus can only be performed in a laboratory setting. Recently, a data-based method that does not require hardware modifications has been proposed. This simplifies the calibration process and a... View full abstract»

• ### IEEE Transactions on Microwave Theory and Techniques information for authors

Publication Year: 2014, Page(s): C3
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## 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..

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## Meet Our Editors

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

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