# IEEE Transactions on Microwave Theory and Techniques

## Volume 57 Issue 5  Part 1 • May 2009

This issue contains several parts.Go to:  Part 2

## Filter Results

Displaying Results 1 - 25 of 36

Publication Year: 2009, Page(s):C1 - C4
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• ### IEEE Transactions on Microwave Theory and Techniques publication information

Publication Year: 2009, Page(s): C2
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• ### A Scalable RFCMOS Noise Model

Publication Year: 2009, Page(s):1009 - 1019
Cited by:  Papers (13)
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This paper presents the high-frequency (HF) noise modeling of an RF MOSFET for a 90-nm technology node. A brief discussion on the noise measurement theory is presented to illustrate the limitation of the noise measurement system. The extracted noise sources were studied for their geometry and biasing dependences and by implementing additional noise sources into the small-signal RFCMOS model, accur... View full abstract»

• ### A 77-GHz FMCW MIMO Radar Based on an SiGe Single-Chip Transceiver

Publication Year: 2009, Page(s):1020 - 1035
Cited by:  Papers (68)  |  Patents (8)
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This paper describes a novel frequency-modulated continuous-wave radar concept, where methods like nonuniform sparse antenna arrays and multiple-input multiple-output techniques are used to improve the angular resolution of the proposed system. To demonstrate the practical feasibility using standard production techniques, a prototype sensor using a novel four-channel single-chip radar transceiver ... View full abstract»

• ### Monobit Subsampler for Digital Downconversion in Pulse-Doppler Radar Applications

Publication Year: 2009, Page(s):1036 - 1043
Cited by:  Papers (5)
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This paper introduces a monobit RF subsampling technique for digital downconversion in pulse-Doppler radar systems. Design considerations for this application include the level of quantization imbalance given a noise-only input, the relation between input and output signal-to-noise ratio (SNR), the affect of jitter over the complete dynamic range of operation, and sensitivity to intermodulation di... View full abstract»

• ### A 5-GHz Differential Low-Noise Amplifier With High Pin-to-Pin ESD Robustness in a 130-nm CMOS Process

Publication Year: 2009, Page(s):1044 - 1053
Cited by:  Papers (15)  |  Patents (1)
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Two electrostatic discharge (ESD)-protected 5-GHz differential low-noise amplifiers (LNAs) are presented with consideration of pin-to-pin ESD protection. The pin-to-pin ESD issue for differential LNAs is addressed for the first time in the literature. Fabricated in a 130-nm CMOS process, both ESD-protected LNAs consume 10.3 mW under 1.2-V power supply. The first LNA with double-diode ESD protectio... View full abstract»

• ### A CMOS Low-Noise Amplifier With Reconfigurable Input Matching Network

Publication Year: 2009, Page(s):1054 - 1062
Cited by:  Papers (38)
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A reconfigurable low-noise amplifier (LNA) with tunable input matching network is proposed. The tunable input matching network provides continuous tuning of the input resonant circuit. The LNA is implemented using 0.13-mum CMOS technology. The amplifier has a tuning range of 1.9-2.4 GHz with an input return loss better than -13 dB. The LNA has a measured voltage gain of 10-14 dB and a noise figure... View full abstract»

• ### $Ka/Ku$ -Band pHEMT Gilbert Mixers With Polyphase and Coupled-Line Quadrature Generators

Publication Year: 2009, Page(s):1063 - 1073
Cited by:  Papers (7)
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In this paper, three kinds of Kalpha/Ku-band Gilbert mixers are demonstrated using 0.15- mum AlGaAs/InGaAs pseudomorphic high electron mobility transistor technology. Thanks to the semiinsulating GaAs substrate, microwave passive components have a low-loss feature, and polyphase filters work up to higher frequencies. Highly accurate tantalum-nitride thin-film resistors utilized in polyphase filter... View full abstract»

• ### A Two-Stage Ring Oscillator in 0.13- $mu{hbox{m}}$ CMOS for UWB Impulse Radio

Publication Year: 2009, Page(s):1074 - 1082
Cited by:  Papers (53)  |  Patents (1)
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We present a two-stage digitally controlled ring oscillator designed mainly for impulse-radio ultra-wideband (UWB) applications. Each basic stage utilizes a local positive feedback, allowing to achieve steady oscillation at low current consumption levels, and to extend the frequency tuning over an ultra-wide range. The frequency tuning is achieved via the control of the tail resistor in each stage... View full abstract»

• ### A Frequency Tripler Using a Subharmonic Mixer and Fundamental Cancellation

Publication Year: 2009, Page(s):1083 - 1090
Cited by:  Papers (13)  |  Patents (1)
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A new odd-order frequency multiplier topology is demonstrated in this work that uses a subharmonic mixer to realize a frequency tripler. A feedforward circuit is used for fundamental cancellation at the output and eliminates the need for filtering structures. For demonstrative purposes, and to validate the concept, a 1-3-GHz proof-of-concept frequency tripler circuit was fabricated. The tripler ci... View full abstract»

• ### Active Distributed Mixers Based on Composite Right/Left-Handed Transmission Lines

Publication Year: 2009, Page(s):1091 - 1101
Cited by:  Papers (9)
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Distributed mixers are based on the active coupling of two artificial transmission lines (TLs) and provide ultra-wideband performance. This paper shows that it is possible to design distributed mixers with novel performances if artificial TLs with dispersion diagrams different from those provided by conventional series-inductor/shunt-capacitor TLs are used. In particular, three novel distributed m... View full abstract»

• ### 10-Gbit/s Wireless Link Using InP HEMT MMICs for Generating 120-GHz-Band Millimeter-Wave Signal

Publication Year: 2009, Page(s):1102 - 1109
Cited by:  Papers (72)
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We have developed a 120-GHz-band wireless link whose maximum transmission data rate is 11.1 Gbit/s. The wireless link uses millimeter-wave monolithic integrated circuits (MMICs) for the generation of a 120-GHz-band millimeter-wave wireless signal. The MMICs were fabricated using 0.1-mum-gate InP-HEMTs and coplanar waveguides. The wireless link can handle four kinds of data rate for OC-192 and 10-G... View full abstract»

• ### Design of Varactor-Based Tunable Matching Networks for Dynamic Load Modulation of High Power Amplifiers

Publication Year: 2009, Page(s):1110 - 1118
Cited by:  Papers (83)  |  Patents (7)
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In this paper, the design of varactor-based tunable matching networks for dynamic load modulation of high power amplifiers (PAs) is presented. Design guidelines to overcome the common breakdown, and tunability problems of the varactors for high power applications are proposed. Based on the guidelines, using commercially available abrupt junction silicon varactors, a tunable matching network is bui... View full abstract»

• ### Crossover Digital Predistorter for the Compensation of Crosstalk and Nonlinearity in MIMO Transmitters

Publication Year: 2009, Page(s):1119 - 1128
Cited by:  Papers (49)  |  Patents (4)
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This paper proposes a novel crossover digital predistorter (CO-DPD) model to compensate for crosstalk and nonlinearity in multiple-input multiple-output (MIMO) radio systems. Crosstalk can take place before or after the power amplifiers, designated herein as nonlinear and linear crosstalk, respectively. This paper demonstrates that, contrary to linear crosstalk, nonlinear crosstalk significantly a... View full abstract»

• ### A Compact 2-D Finite-Difference Frequency-Domain Method Combined With Implicitly Restarted Arnoldi Technique

Publication Year: 2009, Page(s):1129 - 1135
Cited by:  Papers (4)
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A compact 2-D finite-difference frequency-domain (FDFD) method is proposed to analyze the propagation characteristics of arbitrary guiding structures. Unlike other FDFD methods, which calculate the propagation constant for a given frequency, this method adopts the technique that is usually used in the compact 2-D finite-difference time-domain method, i.e., extracting the eigenfrequency based on an... View full abstract»

• ### Effective Modeling of Double Negative Metamaterial Macrostructures

Publication Year: 2009, Page(s):1136 - 1146
Cited by:  Papers (18)
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This paper presents a numerical procedure applied to the modeling of double negative metamaterial (MTM) structures. At the unit-cell level, the properties of the MTM are described by the extracted isotropic constitutive parameters, dispersion diagrams, and higher order modes analysis. The information gathered at the unit-cell level is used to characterize and homogenize the MTM macrostructure. By ... View full abstract»

• ### Boundary Immittance Operators for the SchrÖdinger–Maxwell Problem of Carrier Dynamics in Nanodevices

Publication Year: 2009, Page(s):1147 - 1155
Cited by:  Papers (19)
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We have recently introduced a novel algorithm in which Maxwell equations, discretized by the transmission line matrix method, are coupled to the Schrodinger equation and simultaneously solved. The goal of this study is to develop a method that accounts for deterministic electromagnetic field dynamics together with the quantum coherent transport in the nanoscale environment. We present exact bounda... View full abstract»

• ### Full-Wave Analysis of $N$-Way Power Dividers by Eigenvalue Decomposition

Publication Year: 2009, Page(s):1156 - 1162
Cited by:  Papers (3)
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An (N+1)-port junction endowed with complete rotational symmetry with respect to the first N ports is analyzed by a partial spectral decomposition of its S-matrix. This approach produces N/2 one-port boundary value problems, as well as a single two-port problem, which can be easily solved by means of standard full-wave simulators. The practical example of a coaxially fed 36-wa... View full abstract»

• ### Fabrication-Tolerant Microstrip Quarter-Wave Stepped-Impedance Resonator Filter

Publication Year: 2009, Page(s):1163 - 1172
Cited by:  Papers (13)
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The etching error causes serious frequency drift of a microstrip stepped-impedance resonator (SIR). This paper proposes a novel microstrip quarter-wave SIR structure, which is insensitive to fabrication tolerances. Inserting several ground strips in the low-impedance section of the resonator keeps the impedance ratio almost constant in spite of inaccurate fabrication. As an additional benefit, the... View full abstract»

• ### Niobium Tunable Microwave Filter

Publication Year: 2009, Page(s):1173 - 1179
Cited by:  Papers (5)  |  Patents (4)
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A superconductor bandpass filter with tunable central frequency in the range of 2-3.5 GHz has been implemented using superconducting quantum interference devices (SQUIDs). The filter is designed using two pi-network resonators connected by a transmission line. Both resonators have a SQUID inductor with a tuning range of 65-200 pH, controlled by current magnetically coupled to the SQUIDs. Over a fr... View full abstract»

• ### Dual-Band Recursive Active Filters With Composite Right/Left-Handed Transmission Lines

Publication Year: 2009, Page(s):1180 - 1187
Cited by:  Papers (15)
| | PDF (1256 KB) | HTML

Unique properties exhibited by metamaterial transmission lines have been previously used to design a large number of dual-band microwave passive devices, but not active ones. In this paper, a novel dual-band active filter scheme based on composite right/left-handed transmission lines is proposed. The inclusion of these types of lines as feedback sections in a first-order recursive topology can be ... View full abstract»

• ### Dual-Band Superconducting Spiral Filters Including Narrow Bandstop Notches

Publication Year: 2009, Page(s):1188 - 1195
Cited by:  Papers (10)
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Dual-band filters designed as bandpass filters containing bandstop notches are described. The design formulation is simplified by considering the resonators in pairs. Two microstrip superconducting spiral filters are presented with 400-MHz center frequency, 15%-16% overall bandwidth, and notches of 1% and 0.1%, respectively. Internal dimensions of the enclosures are only 32 mm times 30 mm times6 m... View full abstract»

• ### A New Approach to Canonical Dual-Mode Cavity Filter Design

Publication Year: 2009, Page(s):1196 - 1206
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This paper presents a new approach to the design of canonical dual-mode cavity filters within representation theory. Instead of the folded canonical coupling matrix, which results from using the resonances of the empty cavities as a basis, a representation based on the resonances of the cavities with all perturbations present is used. The resulting coupling matrix takes the form of a cul-de-sac co... View full abstract»

• ### Miniaturized Dual-Band Directional Couplers Using Composite Right/Left-Handed Transmission Structures and Their Applications in Beam Pattern Diversity Systems

Publication Year: 2009, Page(s):1207 - 1215
Cited by:  Papers (40)
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This paper demonstrates the feasibility of dual-band compact and bandwidth-enhanced directional couplers, including both 90deg and 180deg hybrids, using composite right/left-handed (CRLH) transmission structures. Novel and systematic design methodology leading to size miniaturization is proposed. By considering all possible dual-band phase transitions of the constituent transmission lines of the d... View full abstract»

• ### Wave Propagation in a Randomly Rough Parallel-Plate Waveguide

Publication Year: 2009, Page(s):1216 - 1223
Cited by:  Papers (23)
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We study the effects of random rough surface on electromagnetic wave propagation in a parallel-plate waveguide excited by a line source. The second-order small perturbation method is applied to derive a closed-form expression for the coherent wave propagation and the power loss. The derived result is expressed in terms of a double Sommerfeld integral. The double Sommerfeld integral is evaluated by... 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..

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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