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# IEEE Transactions on Microwave Theory and Techniques

## Filter Results

Displaying Results 1 - 25 of 32
• ### Table of contents

Publication Year: 2012, Page(s):C1 - C4
| PDF (177 KB)
• ### IEEE Transactions on Microwave Theory and Techniques publication information

Publication Year: 2012, Page(s): C2
| PDF (140 KB)
• ### A New High-Efficient Spectral-Domain Analysis of Single and Multiple Coupled Microstrip Lines in Planarly Layered Media

Publication Year: 2012, Page(s):2025 - 2034
Cited by:  Papers (11)
| | PDF (2410 KB) | HTML

The analysis of propagation of bound and leaky modes in single and multiple coupled microstrip lines in planarly layered media by means of Galerkin's method applied to an electric field integral-equation formulation in the spectral domain with Chebyshev polynomials basis functions weighted with the edge behavior of the unknown surface current densities on the metallic strips leads to the evaluatio... View full abstract»

• ### A Generalized Multiple Scattering Method for Dense Vias With Axially Anisotropic Modes in an Arbitrarily Shaped Plate Pair

Publication Year: 2012, Page(s):2035 - 2045
Cited by:  Papers (13)
| | PDF (2675 KB) | HTML

Numerical addition theorems of both axially anisotropic and axially isotropic parallel-plate modes are derived using a method based on boundary integral equations. This leads to a generalized multiple scattering (GMS) method for signal/power integrity analysis of dense vias in an arbitrarily shaped plate pair, which overcomes the limitation of the conventional multiple scattering method depending ... View full abstract»

• ### Modeling of Waveguide Structures Using DG-FETD Method With Higher Order Tetrahedral Elements

Publication Year: 2012, Page(s):2046 - 2054
Cited by:  Papers (8)
| | PDF (1915 KB) | HTML

In this paper, the discontinuous Galerkin (DG) finite-element time-domain (FETD) method is developed to model electromagnetic (EM) structures with waveguide excitations. Several specific issues about the DG-FETD modeling are addressed. First, the higher order tetrahedral elements are employed to accurately model the geometry of EM structures and effectively reduce the dispersion error so that the ... View full abstract»

• ### A Comprehensive Analysis of the Absorption Spectrum of Conducting Ferromagnetic Wires

Publication Year: 2012, Page(s):2055 - 2065
Cited by:  Papers (3)
| | PDF (2565 KB) | HTML

A detailed analysis of the absorption spectrum of conductive ferromagnetic wires is presented. The absorption spectrum is computed from the solution to the scattering problem, and circuit models are formulated to clarify the interplay between losses, skin effect, and wire geometry. Both infinitely long wires and the axial resonances introduced by finite-length wires are considered. The theoretical... View full abstract»

• ### High-Performance Solenoidal RF Transformers on High-Resistivity Silicon Substrates for 3D Integrated Circuits

Publication Year: 2012, Page(s):2066 - 2072
Cited by:  Papers (8)
| | PDF (2262 KB) | HTML

Soleniod-like transformers based on a traveling-wave design and using advanced through silicon via process technology are reported for operation at frequencies from 1 to 14 GHz. The symmetrical 1:1 transformers are designed as compact slow-wave transmission-line structures with well-defined signal return paths. One-, two-, three-, and four-turn transformers have 1-dB bandwidths ranging from 6 to 9... View full abstract»

• ### Complex Impedance Transformers Consisting of Only Transmission-Line Sections

Publication Year: 2012, Page(s):2073 - 2084
Cited by:  Papers (7)
| | PDF (2519 KB) | HTML

Design methods are, for the first time, suggested for the complex impedance transformers, to solve the conventional problem of imaginary value of characteristic impedance of transmission-line sections. The complex impedance transformers consist of only transmission-line sections, and the design formulas are the function of the reίection coefficients of the complex termination impeda... View full abstract»

• ### A Rigorous Design Methodology for Compact Planar Branch-Line and Rat-Race Couplers With Asymmetrical T-Structures

Publication Year: 2012, Page(s):2085 - 2092
Cited by:  Papers (40)
| | PDF (2204 KB) | HTML

In this paper, a rigorous design methodology is developed to design compact planar branch-line and rat-race couplers using asymmetrical T-structures. The quarter-wave transmission line, namely the basic element for realizing the coupler, can be replaced by the asymmetrical T-structure, which is composed of a low-impedance shunt stub and two series high-impedance lines with unequal electrical lengt... View full abstract»

• ### Prediction of Multipactor Breakdown for Multicarrier Applications: The Quasi-Stationary Method

Publication Year: 2012, Page(s):2093 - 2105
Cited by:  Papers (8)
| | PDF (2456 KB) | HTML

A new prediction algorithm for multipactor breakdown determination in multicarrier signals is presented. This new algorithm assumes a quasi-stationary (QS) model based on the nonstationary theory for single-carrier signals. It determines the worst case, i.e., the combination of signal phases that yields the lowest breakdown level per carrier, using multipactor electron growth models. It considers ... View full abstract»

• ### Application of Stepped-Impedance Technique for Bandwidth Control of Dual-Band Filters

Publication Year: 2012, Page(s):2106 - 2114
Cited by:  Papers (5)
| | PDF (2004 KB) | HTML

This paper demonstrates application of the popular stepped-impedance technique to control the bandwidths of dual-band filters independently. Unlike previous dual-band stepped-impedance filters, the role of the stepped-impedance technique is to control the bandwidths of the two bands rather than to provide dual-band performance. The exact relationship between stepped-impedance ratios and the ratio ... View full abstract»

• ### Harmonic Suppressed Dual-Band Bandpass Filters With Tunable Passbands

Publication Year: 2012, Page(s):2115 - 2123
Cited by:  Papers (41)
| | PDF (1836 KB) | HTML

This paper presents a novel approach to the design of tunable dual-band bandpass filter with broadband harmonic suppression characteristics. The proposed filter structure offers the possibility of two tunable passbands, as well as a fixed first passband and controllable second passband. The tunable passband frequency usually causes a shift of the harmonics, which need to be suppressed to improve o... View full abstract»

• ### Design of High-Order Wideband Planar Balun Filter in $S$ -Plane Bandpass Prototype

Publication Year: 2012, Page(s):2124 - 2130
Cited by:  Papers (4)
| | PDF (1429 KB) | HTML

A new high-order wideband planar balun filter is proposed in this paper. The balun filter is exact synthesized based on S-domain bandpass prototype using Richards' Theorem to fit the user-defined specifications. By analyzing the redundant element in the equivalent circuit, the output impedance of the balun filter can be arbitrarily assigned. To use an S-plane bandpass prototype other than a high-p... View full abstract»

• ### On the Relation Between Stored Energy and Fabrication Tolerances in Microwave Filters

Publication Year: 2012, Page(s):2131 - 2141
Cited by:  Papers (3)
| | PDF (2757 KB) | HTML

In this paper, a new approach for the sensitivity analysis of microwave filter networks is presented. It is shown that the standard method of sensitivity calculation based on a tuned filter is only valid for infinitesimal geometry changes and not meaningful for practical tolerance values. However, when the sensitivity calculation is expanded to also include sensitivities of detuned filters, it is ... View full abstract»

• ### A Novel Compact Printable Dual-Polarized Chipless RFID System

Publication Year: 2012, Page(s):2142 - 2151
Cited by:  Papers (53)
| | PDF (2563 KB) | HTML

A novel compact design of an ultralow-cost fully printable slot-loaded dual-polarized chipless radio frequency identication tag is presented with four near- and far-field reading techniques. The tag consists of four rectangular metallic patches loaded with multiple slot resonators. Slots with the same polarization for adjacent frequencies are placed alternately into two patches to reduce the mutua... View full abstract»

• ### Self-Biased Nonreciprocal Microstrip Phase Shifter on Magnetic Nanowired Substrate Suitable for Gyrator Applications

Publication Year: 2012, Page(s):2152 - 2157
Cited by:  Papers (7)
| | PDF (1268 KB) | HTML

Magnetic nanowired substrates (MNWS) have been used for the fabrication of a planar nonreciprocal microstrip device. It shows a differential phase shift of 300 degrees cm-1 at K a -band without requiring the application of a dc bias magnetic field, and making it suitable for miniaturized gyrator applications. The nonreciprocal operation is achieved by loading the device with nanowires o... View full abstract»

• ### Microwave and RF p-i-n Diode Model for Time-Domain Simulation

Publication Year: 2012, Page(s):2158 - 2164
Cited by:  Papers (4)
| | PDF (1194 KB) | HTML

A dynamic time-domain model suitable for simulating the behavior of high-speed high-power p-i-n diodes is presented. This time-domain model accurately describes not only the charge storage behavior in the p-i-n diode in forward bias, but also the reverse-bias capacitance and resistance as a function of reverse voltage. A SPICE implementation of the time-domain model is fully described and a spread... View full abstract»

• ### A Dual-Resonant Mode 10/22-GHz VCO With a Novel Inductive Switching Approach

Publication Year: 2012, Page(s):2165 - 2177
Cited by:  Papers (14)
| | PDF (3209 KB) | HTML

This paper presents a novel dual-band voltage-controlled oscillator (VCO) in a standard 0.18-μm CMOS technology. With special design in the LC tank, the circuit exhibits two oscillation modes in different frequency bands. The frequency band selection is achieved by a switched coupled inductor with the tunable inductance and quality factor. This VCO can operate in a 10-GHz band with 7.6% tun... View full abstract»

• ### Design and Analysis of an Ultra-Wideband Automatic Self-Calibrating Upconverter in 65-nm CMOS

Publication Year: 2012, Page(s):2178 - 2191
Cited by:  Papers (4)  |  Patents (1)
| | PDF (4322 KB) | HTML

In this paper, an ultra-wideband (UWB) upconverter is proposed that has automatic self-calibrating circuits for the in-phase/quadrature mismatch correction and the local (LO) leakage suppression. The proposed self-calibrating circuits have been devised to have UWB functionality without help of the baseband processor. In addition, calibrating circuits do not need any additional analog-to-digital co... View full abstract»

• ### A Fully Integrated 0.18- $mu{hbox {m}}$ CMOS Transceiver Chip for $X$-Band Phased-Array Systems

Publication Year: 2012, Page(s):2192 - 2202
Cited by:  Papers (16)
| | PDF (2231 KB) | HTML

An X-band core chip is designed and fabricated in 0.18- CMOS technology, which can significantly reduce the monolithic microwave integrated circuit count required for realizing an active beam-former T/R module. The core chip consists of two RX/TX paths, each of which includes a 6-b phase shifter, a 6-b attenuator, along with two input and output amplifiers. A new architecture for realizing such a ... View full abstract»

• ### Device Characterization Techniques Based on Causal Relationships

Publication Year: 2012, Page(s):2203 - 2219
Cited by:  Papers (2)
| | PDF (4359 KB) | HTML

In this paper, we introduce a novel technique for vector network analyzer (VNA) scattering parameter (S -parameter) device characterization. The presented approach is based on causal relationships that provide a connection between the real and imaginary parts as well as between the magnitude and phase of causal network functions. We discuss the problems encountered in the practical implementation ... View full abstract»

• ### Multimode TRL Calibration Technique for Characterization of Differential Devices

Publication Year: 2012, Page(s):2220 - 2247
Cited by:  Papers (13)
| | PDF (4934 KB) | HTML

In this paper, a new comprehensive analytical derivation and discussion of the multimode thru-relfect-line (TRL) calibration based on the new generalized reverse cascade matrices is presented. The advantage of the presented formulation is that it can account for certain symmetries in the measurement setup and reflect them in the symmetry of the derived relationships. The focus is on the two-mode c... View full abstract»

• ### Simple Test and Modeling of RFID Tag Backscatter

Publication Year: 2012, Page(s):2248 - 2258
Cited by:  Papers (9)
| | PDF (2432 KB) | HTML

We consider here worst-case analysis of backscatter from passive radio frequency identification (RFID) tags. The basis is a figure of merit “B” to relate link power at reader ports to tag circuit parameters. A minimum bound for received monostatic backscatter can be determined by inspection from measured B. The bound is general for narrowband signals in any causal linear propagation.... View full abstract»

• ### Broadband Tissue-Equivalent Phantom for BAN Applications at Millimeter Waves

Publication Year: 2012, Page(s):2259 - 2266
Cited by:  Papers (30)
| | PDF (1234 KB) | HTML

The extension of body area networks from microwaves to millimeter waves requires to develop experimental phantoms emulating the dielectric properties of human skin for the accurate, reproducible, and well-controlled characterization of wearable antennas, on-body propagation channel, and absorption of the electromagnetic power by the human body. Here we introduce a broadband skin-equivalent semisol... View full abstract»

• ### Mechanisms of RF Electromagnetic Field Absorption in Human Hands and Fingers

Publication Year: 2012, Page(s):2267 - 2276
Cited by:  Papers (3)
| | PDF (3904 KB) | HTML

The absorption of electromagnetic fields in the hand is investigated over the 900-3700-MHz frequency range. This enables the determination of the envelope of the peak spatial specific absorption rate in the hand. It also provides a basis for deriving measurement procedures for evaluating compliance of wireless devices with specific absorption rate limits in the hands. Both plane waves and dipole a... 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