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# IEEE Transactions on Microwave Theory and Techniques

## Filter Results

Displaying Results 1 - 25 of 25

Publication Year: 2010, Page(s):C1 - C4
| PDF (47 KB)
• ### IEEE Transactions on Microwave Theory and Techniques publication information

Publication Year: 2010, Page(s): C2
| PDF (44 KB)
• ### Phase-Noise Analysis in Rotary Traveling-Wave Oscillators Using Simple Physical Model

Publication Year: 2010, Page(s):1465 - 1474
Cited by:  Papers (27)
| | PDF (798 KB) | HTML

We show that the rotary traveling wave oscillator (RTWO) is well treated as a superposition of multiple standing-wave oscillators (SWOs). Based on the proposed physical interpretation, we derive a phase-noise formula for the SWO, and extend it to the RTWO, which can predict thermally induced phase noise with no more complexity than the well-understood LC voltage-controlled oscillator. Measu... View full abstract»

• ### Layout Optimization of Small-Size Ferroelectric Parallel-Plate Varactors

Publication Year: 2010, Page(s):1475 - 1484
Cited by:  Papers (3)
| | PDF (1414 KB) | HTML

The extremely high permittivity of ferroelectric varactors (typically ϵr > 100) imposes specific design and fabrication constraints for microwave and millimeter-wave applications. In this paper, small-size parallel-plate ferroelectric varactors insensitive to fabrication misalignment tolerances are studied experimentally. It is shown that the total resistance of the varactors ... View full abstract»

• ### A Two-Port WR75 Waveguide Turnstile Gyromagnetic Switch

Publication Year: 2010, Page(s):1485 - 1492
Cited by:  Papers (1)
| | PDF (1349 KB) | HTML

The two-port reflection gyromagnetic waveguide switch described in this paper consists of a 90° Faraday rotator in a re-entrant or an inverted re-entrant turnstile geometry in the E-plane at the junction of two H-plane rectangular waveguides. It adjustment is a two-step eigenvalue problem. One adjustment fixes the electrical length of the circular Faraday rotator waveguide and produces a pa... View full abstract»

• ### Ferrite-Filled Antisymmetrically Biased Rectangular Waveguide Isolator Using Magnetostatic Surface Wave Modes

Publication Year: 2010, Page(s):1493 - 1501
Cited by:  Papers (5)
| | PDF (1375 KB) | HTML

The complex dispersion diagram of an antisymmetrically biased ferrite-filled rectangular waveguide (RWG) is investigated, revealing that the waveguide supports a band-limited unidirectional magnetostatic surface wave mode. This mode is subsequently used to design a novel RWG isolator. A parametric analysis including loss is performed to characterize the isolation band. A prototype waveguide isolat... View full abstract»

• ### Improving Backscatter Radio Tag Efficiency

Publication Year: 2010, Page(s):1502 - 1509
Cited by:  Papers (49)
| | PDF (494 KB) | HTML

This paper studies tag properties for optimized tag-to-reader backscatter communication. The latter is exploited in RF identification (RFID) systems and utilizes binary reflection coefficient change of the tag antenna-load circuit. It is shown that amplitude maximization of complex reflection coefficient difference between the two states is not sufficient for optimized tag-to-reader backsca... View full abstract»

• ### A Comparative Analysis of the Complexity/Accuracy Tradeoff in Power Amplifier Behavioral Models

Publication Year: 2010, Page(s):1510 - 1520
Cited by:  Papers (84)  |  Patents (1)
| | PDF (1314 KB) | HTML

A comparative study of state-of-the-art behavioral models for microwave power amplifiers (PAs) is presented in this paper. After establishing a proper definition for accuracy and complexity for PA behavioral models, a short description on various behavioral models is presented. The main focus of this paper is on the modeling accuracy as a function of computational complexity. Data is collected fro... View full abstract»

• ### Spatial Harmonics and Homogenization of Negative-Refractive-Index Transmission-Line Structures

Publication Year: 2010, Page(s):1521 - 1531
Cited by:  Papers (7)
| | PDF (796 KB) | HTML

In this paper, we discuss negative-refractive-index transmission-line (NRI-TL) metamaterial structures with respect to spatial harmonics. The power in the fundamental spatial harmonic is shown to yield a measure that relates to the homogeneity of the metamaterial. It is shown that NRI-TL metamaterials yield highly homogeneous field distributions if both the unit cell is short compared to the guide... View full abstract»

• ### Study of Extraordinary Transmission in a Circular Waveguide System

Publication Year: 2010, Page(s):1532 - 1542
Cited by:  Papers (13)
| | PDF (1370 KB) | HTML

Extraordinary transmission through periodic distributions of sub-wavelength holes made in opaque screens has been demonstrated and exhaustively studied along the last decade. More recently, extraordinary transmission has also been predicted and experimentally observed through electrically small diaphragms located inside hollow pipe waveguides. This last phenomenon cannot be explained in terms of s... View full abstract»

• ### Generating Pure Circular TE $_{ mn}$ Modes Using Y-Type Power Dividers

Publication Year: 2010, Page(s):1543 - 1550
Cited by:  Papers (11)
| | PDF (1169 KB) | HTML

This paper presents a methodology of exciting a pure circular TEmn modes using cascaded Y-type power dividers. The dividers partition the input signal into several parts, which are then coupled to a circular waveguide through apertures. The coupling apertures induce magnetic dipoles. With proper arrangement of the magnetic dipoles on the circumference of the circular waveguide, they the... View full abstract»

• ### Novel Multistub Loaded Resonator and Its Application to High-Order Dual-Band Filters

Publication Year: 2010, Page(s):1551 - 1556
Cited by:  Papers (33)
| | PDF (835 KB) | HTML

A novel multistub loaded resonator and its application to high-order dual-band bandpass filters are presented in this paper. A key merit of the filter configuration is that the characteristics of the second passband can be conveniently controlled, whereas that of the first passband are fixed. As the multistub loaded resonator contains six symmetric stubs, which can provide sufficient coupled secti... View full abstract»

• ### Low-Loss Frequency-Agile Bandpass Filters With Controllable Bandwidth and Suppressed Second Harmonic

Publication Year: 2010, Page(s):1557 - 1564
Cited by:  Papers (50)
| | PDF (1082 KB) | HTML

This paper presents a novel approach to design frequency-agile bandpass filters with constant absolute bandwidth and passband shape, as well as a suppressed second harmonic. A novel mixed electric and magnetic coupling scheme is proposed to control the coupling coefficient variation. Theoretical analysis indicates that it is able to achieve desired coupling coefficients between the proposed resona... View full abstract»

• ### Single-Ended and Differential Radial Power Combiners Implemented With a Compact Broadband Probe

Publication Year: 2010, Page(s):1565 - 1572
Cited by:  Papers (16)  |  Patents (1)
| | PDF (1173 KB) | HTML

A radial power-combiner design is presented using broadband probes and a radial cavity configuration. The 8:1 combiner (which can also be used as a power divider) is demonstrated experimentally in both single-ended and differential configurations. The broadband probe is composed of cylindrical conductors and dielectric spacers, arranged on a rod for mechanical stability. The proposed radial power ... View full abstract»

• ### Phase-Shifter Design Using Phase-Slope Alignment With Grounded Shunt $lambda/4$ Stubs

Publication Year: 2010, Page(s):1573 - 1583
Cited by:  Papers (26)
| | PDF (811 KB) | HTML

This paper presents the theory and a design method for distributed digital phase shifters, where both the phase-error bandwidth and the return-loss bandwidth are considered simultaneously. The proposed topology of each phase bit consists of a transmission-line (TL) branch and a bandpass filter (BPF) branch. The BPF branch uses grounded shunt λ/4 stubs to achieve phase alignment with the ins... View full abstract»

• ### On the Applications of the Coupled-Line Composite Right/Left-Handed Unit Cell

Publication Year: 2010, Page(s):1584 - 1591
Cited by:  Papers (17)
| | PDF (1378 KB) | HTML

This paper presents two applications of the coupled-line composite right/left-handed (CL-CRLH) unit cell, compact-size rat-race hybrid, and arbitrary coupling directional coupler. Benefiting from the slow-wave effect present in both the right- and left-handed regions of the CL-CRLH unit cell, two compact-size rat-race hybrids were realized. 60% area reduction was achieved while preserving the conv... View full abstract»

• ### Realization of a Calculable RF Power Standard in Coplanar Technology on Alumina Substrate

Publication Year: 2010, Page(s):1592 - 1598
| | PDF (694 KB) | HTML

This paper presents the first efforts toward a calculable power standard in the RF domain based on a modeling approach. Consequently, it could be possible to theoretically determine the input reflection coefficient and the efficiency of the power detector. We simulated and realized a coplanar thermistor mount prototype in the 50-MHz-8-GHz frequency range whose performance has been validated by mea... View full abstract»

• ### Complete On-Wafer Noise-Figure Characterization of 60-GHz Differential Amplifiers

Publication Year: 2010, Page(s):1599 - 1608
Cited by:  Papers (7)
| | PDF (1259 KB) | HTML

In this paper, we show that the differential noise figure of differential amplifiers is better measured directly by using baluns rather than be derived from single-ended measurements. For on-wafer measurements at 60 GHz, this can best be done using RF probes with integrated baluns. To extract the full 4 × 4 noise correlation matrix needed to predict the circuit behavior under any operating ... View full abstract»

• ### 60-GHz Ultra-Wideband Radio-Over-Fiber System Using a Novel Photonic Monocycle Generation

Publication Year: 2010, Page(s):1609 - 1620
Cited by:  Papers (14)
| | PDF (1425 KB) | HTML

An impulse-radio ultra-wideband (UWB) photonic generation system targeting high user density in-flight communications with simultaneous ranging capabilities in the 60-GHz radio band is proposed and demonstrated experimentally and the implementation cost is analyzed. Impulse-radio UWB monocycles are employed for signaling. The monocycles are generated employing a pulsed laser and a differential pho... View full abstract»

• ### Contributions to the Modeling and Design of Reconfigurable Reflecting Cells Embedding Discrete Control Elements

Publication Year: 2010, Page(s):1621 - 1628
Cited by:  Papers (23)
| | PDF (839 KB) | HTML

This paper presents new contributions to the modeling and design of reflecting cells embedding discrete control elements such as microelectromechanical system (MEMS) or diodes. First, a rigorous assessment of the different possibilities to simulate and measure the reconfigurable cell in a periodic environment is proposed. Strategies to efficiently model a cell comprising discrete control elements ... View full abstract»

• ### High-Performance 1.5–2.5-GHz RF-MEMS Tunable Filters for Wireless Applications

Publication Year: 2010, Page(s):1629 - 1637
Cited by:  Papers (53)
| | PDF (1063 KB) | HTML

This paper presents high-performance RF microelectromechanical systems (RF MEMS) tunable filters with constant absolute bandwidth for the 1.5-2.5-GHz wireless band. The filter design is based on corrugated coupled lines and ceramic substrates (εr=9.9) for miniaturization, and the 3-bit tuning network is fabricated using a digital/analog RF-MEMS device so as to provide a large cap... View full abstract»

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

Publication Year: 2010, Page(s): 1638
| PDF (23 KB)
• ### Special issue on radio-frequency nanoelectronics

Publication Year: 2010, Page(s): 1639
| PDF (148 KB)

Publication Year: 2010, Page(s): 1640
| PDF (320 KB)
• ### IEEE Microwave Theory and Techniques Society Information

Publication Year: 2010, Page(s): C3
| PDF (32 KB)

## 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