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# IEEE Transactions on Microwave Theory and Techniques

## Issue 10  Part 1 • Oct. 2009

This issue contains several parts.Go to:  Part 2

## Filter Results

Displaying Results 1 - 25 of 27

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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• ### Efficient Scalable Modeling of Double- $pi$ Equivalent Circuit for On-Chip Spiral Inductors

Publication Year: 2009, Page(s):2289 - 2300
Cited by:  Papers (19)
| | PDF (1274 KB) | HTML

This paper presents an efficient technique to generate a scalable double-pi circuit model for spiral inductors. The double-pi equivalent circuit is widely used to build an inductor library because of its high accuracy over a wide frequency range. However, direct parameter extraction for the double-pi model and scalable fitting for each parameter are complicated due to the large number of circuit e... View full abstract»

• ### High-Performance IQ Modulator-Based Phase Conjugator for Modular Retrodirective Antenna Array Implementation

Publication Year: 2009, Page(s):2301 - 2306
Cited by:  Papers (11)  |  Patents (3)
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In this paper, we verify a new phase conjugating architecture suitable for deployment as the core building block in retrodirective antenna arrays, which can be scaled to any number of elements in a modular way without impacting on complexity. Our solution is based on a modified in-phase and quadrature modulator architecture, which completely resolves four major shortcomings of the conventional mix... View full abstract»

• ### An Experimental Ultra-Low-Voltage Demodulator in 0.18-$mu$ m CMOS

Publication Year: 2009, Page(s):2307 - 2317
Cited by:  Papers (5)
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An experimental demodulator suitable for ultra-low-voltage and low-power wireless applications is presented in this paper. To alleviate the stringent design constraints, discrete-time frequency-shift keying (FSK) is employed in this design. The proposed demodulator is composed of limiting amplifiers (LAs), low-pass filters (LPFs), and discrete-time quadricorrelators. For circuit implementations, n... View full abstract»

• ### A 1–20-GHz Broadband MMIC Demodulator for Low IF Receivers in Multistandard Applications

Publication Year: 2009, Page(s):2318 - 2328
Cited by:  Papers (4)  |  Patents (1)
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This paper presents the design and performance of a 1-20-GHz broadband demodulator for low IF receivers dedicated to multistandard applications. Unlike the conventional in-phase/quadrature (I/Q) demodulator, this circuit uses three paths 120deg phase shifted from one another instead of only two 90deg phase shifted I and Q paths. This feature makes the proposed demodulator less sensitive to phase m... View full abstract»

• ### A 12-GHz High-Efficiency Tapered Traveling-Wave Power Amplifier With Novel Power Matched Cascode Gain Cells Using SiGe HBT Transistors

Publication Year: 2009, Page(s):2329 - 2336
Cited by:  Papers (20)
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In this paper, we present the analysis, design, and implementation of an integrated power distributed amplifier (DA), fabricated in a low-cost 0.25-mum SiGe BiCMOS technology. The circuit consists of four novel inductively peaked cascode gain cells, which are capacitively coupled to the base line for power optimization and bandwidth enhancement. Due to the tapered collector line, no output termina... View full abstract»

• ### Optimum ASK Modulation Scheme for Passive RFID Tags Under Antenna Mismatch Conditions

Publication Year: 2009, Page(s):2337 - 2343
Cited by:  Papers (10)
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We propose optimized ON/OFF states of the backscattered amplitude shift keying (ASK) modulator for the passive RF identification (RFID) tags. This takes into account both the reader receiver sensitivity and tag antenna mismatch conditions. Based on the analysis of the power transfer between the passive RFID tag and reader, we derived the optimum configuration of the ASK modulator. It maximizes the... View full abstract»

• ### Reflection Soliton Oscillator

Publication Year: 2009, Page(s):2344 - 2353
Cited by:  Papers (19)
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We report on an electrical oscillator that self-generates a periodic train of short-duration pulses. The oscillator consists of a nonlinear transmission line (NLTL), one end of which is connected to a one-port amplifier and the other end is open. In the steady state, a self-generated short-duration pulse travels back and forth on the NLTL, reflected at both ends of the NLTL due to impedance mismat... View full abstract»

• ### 60-GHz Integrated Transmitter Development in 90-nm CMOS

Publication Year: 2009, Page(s):2354 - 2367
Cited by:  Papers (13)  |  Patents (1)
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In this study, two 60-GHz single-chip CMOS transmitters have been fully integrated in a standard 90-nm CMOS process, focusing on low-power and high-performance applications, respectively. The low-power transmitter lineup consists of a push-push voltage-controlled oscillator (VCO), a single-gate up-conversion mixer, and a low-power three-stage power amplifier. The high-performance transmitter lineu... View full abstract»

• ### A 60% PAE WCDMA Handset Transmitter Amplifier

Publication Year: 2009, Page(s):2368 - 2377
Cited by:  Papers (7)
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This paper reports the design of a class-E envelope elimination and restoration (EER) based amplifier for a wideband code division multiple access handset application that attains 60% power-added efficiency at peak power output. Emphasis is placed on the envelope modulator that employs a novel split-frequency approach in order to attain an efficiency of 80% for this part of the system. In contrast... View full abstract»

• ### A New Type of Coupled Cavity Interaction Circuit for Gyrotron Traveling Wave Amplifier Applications

Publication Year: 2009, Page(s):2378 - 2383
Cited by:  Papers (1)
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This paper proposes a new type of coupled-cavity interaction circuit for gyrotron traveling-wave amplifier applications with inner- and outer-intersecting coupling. For analysis, we use the equivalent-circuit method, as well as the Ansoft High Frequency Structure Simulator (HFSS) code. Calculated results for the frequency characteristics of the interaction circuit show that at the center frequency... View full abstract»

• ### Equivalent Circuits for Gap- and Coax-Excited Circular Posts in Rectangular Waveguide

Publication Year: 2009, Page(s):2384 - 2390
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Equivalent circuits are presented for gap- and coax-excited circular posts in rectangular waveguide. These equivalent circuits, which are derived from previously published analytical results that have been shown to accurately predict the gap (or coax) input admittance without the need for empirical factors, have a common form, many common terms relating to the post and its position, and specific t... View full abstract»

• ### Performance Evaluation of a Passive Millimeter-Wave Imager

Publication Year: 2009, Page(s):2391 - 2405
Cited by:  Papers (6)
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A cross-correlating 186-GHz passive millimeter-wave imager has been built. The key components in the signal processing hardware are two 186-GHz receivers and a broadband complex correlator. To evaluate the performance of this imager, its point-spread function, beam pattern, baseline vector, and their variations with the scanning direction have been experimentally measured and derived. Some of thes... View full abstract»

• ### Cutoff Wavelengths of Elliptical Metallic Waveguides

Publication Year: 2009, Page(s):2406 - 2415
Cited by:  Papers (13)
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The cutoff wavelengths lambdacmn of elliptical metallic waveguides with perfectly conducting walls are determined analytically. Two different methods are used for the evaluation. In the first, the electromagnetic field is expressed in terms of elliptical-cylindrical wave functions. In the second, a shape perturbation method, the field is expressed in terms of circular-cylindrical wave f... View full abstract»

• ### Reduction of Numerical Dispersion of 3-D Higher Order Alternating-Direction-Implicit Finite-Difference Time-Domain Method With Artificial Anisotropy

Publication Year: 2009, Page(s):2416 - 2428
Cited by:  Papers (6)
| | PDF (830 KB) | HTML

This paper introduces a new method aimed at reducing the numerical dispersion of the 3-D higher order alternating- direction-implicit finite-difference time-domain (ADI-FDTD) method. First, we modify the numerical formulations of the 3-D higher order ADI-FDTD method with the artificial anisotropy dielectric material and derive the new numerical dispersion relation analytically. In addition, theore... View full abstract»

• ### Advanced Coupling Matrix and Admittance Function Synthesis Techniques for Dissipative Microwave Filters

Publication Year: 2009, Page(s):2429 - 2438
Cited by:  Papers (31)  |  Patents (1)
| | PDF (846 KB) | HTML

In this paper, novel approaches to synthesize admittance function polynomials and canonical N+2 coupling matrices for narrowband lossy filters are presented. The methods are simpler and more general than the ones found in the literature. The polynomial synthesis approach is fully analytical and also very useful for lossless polynomial synthesis with simpler derivations. The coupling matrix ... View full abstract»

• ### Design and Implementation of DC–20-GHz Lumped Resistor Matched Loads for Planar Microwave Circuits

Publication Year: 2009, Page(s):2439 - 2443
Cited by:  Papers (3)
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In this paper, a design technique to match lumped resistors in the dc to 20-GHz band is presented. This technique makes it possible to implement very wideband matched loads with a return loss that is better than 20 dB. The proposed implementation is simple, low cost, and gives superior performance than previously reported alternatives. The technique was developed to match surface-mount resistors s... View full abstract»

• ### Accurate Synthesis of Four-Line Interdigitated Coupler

Publication Year: 2009, Page(s):2444 - 2455
Cited by:  Papers (14)
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We present an accurate synthesis method for the design of a four-line interdigitated coupler in this paper. With the derivation of an admittance matrix of four coupled transmission lines and the use of an interconnecting condition, only half of the original coupled-line structure should be considered with its symmetric plane replaced by a perfect electric wall and/or perfect magnetic wall. Subsequ... View full abstract»

• ### Measurement of Planar Substrate Uniaxial Anisotropy

Publication Year: 2009, Page(s):2456 - 2463
Cited by:  Papers (12)
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A new technique to measure uniaxial anisotropy in planar substrates is described. The technique uses a single dual-mode resonator. Each mode of the resonator has a different distribution of horizontal (parallel to the substrate surface) and vertical (perpendicular to the substrate surface) directed fields. Using an electromagnetic analysis of the dual-mode resonator, the resonant frequencies of th... View full abstract»

• ### Analysis of On-Body Transmission Mechanism and Characteristic Based on an Electromagnetic Field Approach

Publication Year: 2009, Page(s):2464 - 2470
Cited by:  Papers (27)
| | PDF (1111 KB) | HTML

In this study, an electromagnetic field approach is used to clarify the mechanism of on-body transmission. A homogeneous cylinder is used as an arm model, and the characteristic of electromagnetic field distribution around the cylinder is extracted based on surface wave approximation and numerical analysis, respectively. As a result, the surface wave approximation is found to be valid in the far-f... View full abstract»

• ### Comments on "A 2.17-dB NF 5-GHz-Band Monolithic CMOS LNA With 10-mW DC Power Consumption"

Publication Year: 2009, Page(s):2471 - 2472
Cited by:  Papers (1)
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• ### Authors' reply [to comments on "A 2.17-dB NF 5-GHz-Band Monolithic CMOS LNA With 10-mW DC Power Consumption"]

Publication Year: 2009, Page(s):2472 - 2473
Cited by:  Papers (2)
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• ### IEEE Transactions on Microwave Theory and Techniques information for authors

Publication Year: 2009, Page(s): 2474
| PDF (23 KB)
• ### Access over 1 million articles - The IEEE Digital Library [advertisement]

Publication Year: 2009, Page(s): 2475
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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