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# IEEE Transactions on Microwave Theory and Techniques

## Issue 7  Part 2 • July 2010

This issue contains several parts.Go to:  Part 1

## Filter Results

Displaying Results 1 - 25 of 25

Publication Year: 2010, Page(s):C1 - C4
| PDF (45 KB)
• ### IEEE Transactions on Microwave Theory and Techniques publication information

Publication Year: 2010, Page(s): C2
| PDF (44 KB)
• ### Guest Editorial—Terahertz Technology: Bridging the Microwave-to-Photonics Gap

Publication Year: 2010, Page(s):1901 - 1902
Cited by:  Papers (2)
| PDF (29 KB) | HTML
• ### A 10-mW Submillimeter-Wave Solid-State Power-Amplifier Module

Publication Year: 2010, Page(s):1903 - 1909
Cited by:  Papers (33)
| | PDF (1113 KB) | HTML

In this paper, we demonstrate a packaged sub-millimeter wave solid-state power amplifier (SSPA). The SSPA is implemented in coplanar waveguide (CPW) and uses an advanced high fMAX InP HEMT transistor with a sub 50-nm gate. A monolithically integrated CPW dipole-to-waveguide transition eliminates the need for wirebonding and additional substrates. On-chip compact tandem couplers a... View full abstract»

• ### 68–110-GHz-Band Low-Noise Amplifier Using Current Reuse Topology

Publication Year: 2010, Page(s):1910 - 1916
Cited by:  Papers (16)
| | PDF (580 KB) | HTML

This paper proposes a new topology for a broadband low-noise-amplifier (LNA). A common-gate (CG) amplifier with a matching inductor composes a unit cell, and the unit cells are cascaded to increase gain. As both the input and output impedances of the unit cell are matched to 50 Ω for a wide frequency range, it is possible to increase the gain while maintaining wide bandwidth. Thus, high-gai... View full abstract»

• ### A Broadband 835–900-GHz Fundamental Balanced Mixer Based on Monolithic GaAs Membrane Schottky Diodes

Publication Year: 2010, Page(s):1917 - 1924
Cited by:  Papers (32)
| | PDF (2259 KB) | HTML

The development of a 835-900-GHz biasable fundamental balanced mixer using planar GaAs Schottky diodes is presented. The monolithic microwave integrated circuit integrates two planar Schottky anodes in a balanced configuration, stripline filtering elements, and on-chip capacitor on a thin GaAs membrane. At 850 GHz, double side-band (DSB) mixer noise temperature of 2660 K and conversion loss of 9.2... View full abstract»

• ### A Frequency-Multiplied Source With More Than 1 mW of Power Across the 840–900-GHz Band

Publication Year: 2010, Page(s):1925 - 1932
Cited by:  Papers (56)  |  Patents (1)
| | PDF (3221 KB) | HTML

We report on the design, fabrication, and characterization of an 840-900-GHz frequency multiplier chain that delivers more than 1 mW across the band at room temperature with a record peak power of 1.4 mW at 875 GHz. When cooled to 120 K, the chain delivers up to 2 mW at 882 GHz. The chain consists of a power amplifier module that drives two cascaded frequency triplers. This unprecedented output po... View full abstract»

• ### Physics-Based Design and Optimization of Schottky Diode Frequency Multipliers for Terahertz Applications

Publication Year: 2010, Page(s):1933 - 1942
Cited by:  Papers (26)
| | PDF (1557 KB) | HTML

Planar Schottky diode frequency multipliers are by far the most employed devices for local oscillator (LO) power generation at terahertz frequencies. In order to push up to the limit the available LO power at terahertz frequencies, the use of accurate physics-based simulation tools is highly necessary to develop multiplier circuits with the highest performance. This paper investigates the potentia... View full abstract»

• ### Integrated 585-GHz Hot-Electron Mixer Focal-Plane Arrays Based on Annular Slot Antennas for Imaging Applications

Publication Year: 2010, Page(s):1943 - 1951
Cited by:  Papers (13)
| | PDF (1747 KB) | HTML

We have developed 585-GHz quasi-optical mixers and focal-plane arrays (FPAs) comprised of planar annular slot antennas (ASAs) with integrated niobium hot-electron bolometers for imaging applications. In order to optimize the single-element mixer design, the embedding impedance of the single ASA presented to the bolometer is analyzed using the induced electromotive force (EMF) method by including t... View full abstract»

• ### A Global Approach for Modeling and Analysis of Edge-Coupled Traveling-Wave Terahertz Photoconductive Sources

Publication Year: 2010, Page(s):1952 - 1966
Cited by:  Papers (9)
| | PDF (1071 KB) | HTML

In this paper, a global and geometry-independent approach is proposed for accurate analysis of edge-coupled continuous wave (CW) traveling-wave terahertz photomixer sources. All major physical phenomena involved in the operation of such devices are included in three interconnected solvers, which are combined as a unified analysis tool. A photonic solver is developed to find the optical intensity a... View full abstract»

• ### Tunable Subterahertz Wave Generation Based on Photonic Frequency Sextupling Using a Polarization Modulator and a Wavelength-Fixed Notch Filter

Publication Year: 2010, Page(s):1967 - 1975
Cited by:  Papers (31)
| | PDF (1112 KB) | HTML

Optical frequency multiplication based on electrooptical modulation is an effective way to generate high-spectral-purity and frequency-tunable subterahertz waves. The previously demonstrated frequency-doubling and quadrupling techniques based on a Mach-Zehnder modulator have a low multiplication factor and suffer from bias drift problem and residual chirp. In this paper, a novel approach to achiev... View full abstract»

• ### Photonic-Crystal-Based Polarization Converter for Terahertz Integrated Circuit

Publication Year: 2010, Page(s):1976 - 1984
Cited by:  Papers (9)
| | PDF (2236 KB) | HTML

In this paper, the fabrication and characterization of newly developed photonic crystal (PC) polarization-controlling devices on a silicon-on-insulator wafer for integrated terahertz applications are presented. The polarization converter is composed of periodic asymmetric loaded PC slab waveguide. Square- and circular-hole PC slab waveguides were studied using a 3-D finite-difference time-domain m... View full abstract»

• ### Single-Mode Terahertz Bragg Fiber Design Using a Modal Filtering Approach

Publication Year: 2010, Page(s):1985 - 1992
Cited by:  Papers (4)
| | PDF (855 KB) | HTML

This paper proposes a single-mode Bragg fiber design method based on a modal filtering technique and applies it to the design of a hollow-core single-mode Bragg fiber, which can achieve low loss by avoiding material loss. The proposed method exploits the Brewster phenomenon to filter out the TM01 mode so that only the fundamental HE11 mode exists. Consequently, this proposed ... View full abstract»

• ### A 2-D Artificial Dielectric With ${0 leq n < 1}$ for the Terahertz Region

Publication Year: 2010, Page(s):1993 - 1998
Cited by:  Papers (26)
| | PDF (810 KB) | HTML

We demonstrate a 2-D artificial dielectric medium suitable for the terahertz region by exploiting the characteristic frequency dependence in the phase velocity of the lowest order transverse-electric (TE1) mode of the parallel-plate waveguide (PPWG). This artificial medium exhibits a plasma-like behavior having a frequency-dependent refractive index that varies between zero and unity. U... View full abstract»

• ### Time-Delay Multiplexing of Two Beams in a Terahertz Imaging Radar

Publication Year: 2010, Page(s):1999 - 2007
Cited by:  Papers (11)
| | PDF (1523 KB) | HTML

We demonstrate a time-delay multiplexing technique that doubles the frame rate of a 660-690-GHz imaging radar with minimal additional instrument complexity. This is done by simultaneously projecting two offset, orthogonally polarized radar beams generated and detected by a common source and receiver. Beam splitting and polarization rotation is accomplished with a custom designed waveguide hybrid c... View full abstract»

• ### Illumination Aspects in Active Terahertz Imaging

Publication Year: 2010, Page(s):2008 - 2013
Cited by:  Papers (8)
| | PDF (1892 KB) | HTML

Our paper focuses on illumination aspects in active terahertz imaging. First, we introduce our fast 620-GHz camera and discuss imaging with focused illumination. After that, we switch to global illumination and discuss its benefits and drawbacks. The loss in intensity-compared to focused illumination-does not fully come to bear on the dynamic range because losses at the beam-splitter and back-refl... View full abstract»

• ### A Novel Approach for Improving Off-Axis Pixel Performance of Terahertz Focal Plane Arrays

Publication Year: 2010, Page(s):2014 - 2021
Cited by:  Papers (28)  |  Patents (1)
| | PDF (1396 KB) | HTML

We present an antenna engineering approach to significantly improve off-axis detection properties of terahertz focal plane arrays (FPAs) behind an extended-hemispherical lens. In particular, antennas in the off-axis pixels in a large FPA were redesigned to exhibit tilted receiving patterns. The new antenna structure corrects for beam distortions in off-axis sensors due to the small lens size. Spec... View full abstract»

• ### Hybrid Continuous-Wave Demodulating Multipixel Terahertz Imaging Systems

Publication Year: 2010, Page(s):2022 - 2026
Cited by:  Papers (3)
| | PDF (1011 KB) | HTML

We present an electrooptic (EO) terahertz imaging technique providing a demodulating detector array for phase-sensitive multipixel terahertz detection. The terahertz radiation from a quartz-stabilized microelectronic emitter is mixed with the synchronized laser beat signal of a continuous-wave distributed-feedback diode laser pair. A fast laser current control loop provides stable phase locking be... View full abstract»

• ### Terahertz Imaging Systems With Aperture Synthesis Techniques

Publication Year: 2010, Page(s):2027 - 2039
Cited by:  Papers (31)  |  Patents (1)
| | PDF (1367 KB) | HTML

This paper presents the research and development of two terahertz imaging systems based on photonic and electronic principles, respectively. As part of this study, a survey of ongoing research in the field of terahertz imaging is provided focusing on security applications. Existing terahertz imaging systems are reviewed in terms of the employed architecture and data processing strategies. Active m... View full abstract»

• ### Optical Scanning Techniques for Characterization of Terahertz Photoconductive Antenna Arrays

Publication Year: 2010, Page(s):2040 - 2045
Cited by:  Papers (4)
| | PDF (693 KB) | HTML

Optical scanning techniques for characterizing radiation properties of terahertz photoconductive antenna arrays are proposed, and as an example, a 14-element equally spaced array structure made on low-temperature grown GaAs is characterized using the proposed methods. View full abstract»

• ### Terahertz Antenna Technology and Verification: Herschel and Planck - A Review

Publication Year: 2010, Page(s):2046 - 2063
Cited by:  Papers (4)
| | PDF (8188 KB) | HTML

One of the aspects that the space and terrestrial terahertz imaging systems have in common is that they require state-of-the-art technology to achieve their ambitious goals. Although technology is advancing at a rapid pace in this frequency range, the requirements for these systems go well beyond what is currently available such that there are also no standards or calibration reference sources in ... View full abstract»

• ### Qualitative and Quantitative Detection of Pesticides With Terahertz Time-Domain Spectroscopy

Publication Year: 2010, Page(s):2064 - 2070
Cited by:  Papers (29)
| | PDF (384 KB) | HTML

This paper used the newly developed terahertz time-domain spectroscopy (THz-TDS) to detect pesticides, especially imidacloprid, qualitatively and quantitatively in the frequency range of 0.5-1.6 THz. All together, four pesticides and three food powders, as well as polyethylene, were investigated. Different weight ratios of imidacloprid in polyethylene and in sticky rice powder were detected and an... View full abstract»

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

Publication Year: 2010, Page(s): 2071
| PDF (23 KB)
• ### Special issue on radio-frequency nanoelectronics

Publication Year: 2010, Page(s): 2072
| PDF (148 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..

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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