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# IEEE Transactions on Microwave Theory and Techniques

## Issue 12  Part 2 • Dec. 2011

This issue contains several parts.Go to:  Part 1

## Filter Results

Displaying Results 1 - 25 of 41
• ### [Front cover]

Publication Year: 2011, Page(s): C1
| PDF (1703 KB)
• ### IEEE Transactions on Microwave Theory and Techniques publication information

Publication Year: 2011, Page(s): C2
| PDF (45 KB)

Publication Year: 2011, Page(s):3261 - 3262
| PDF (50 KB)
• ### Editorial

Publication Year: 2011, Page(s): 3263
| PDF (20 KB) | HTML
• ### FDTD/GSM Analysis of Multilayered Periodic Structures With Arbitrary Skewed Grid

Publication Year: 2011, Page(s):3264 - 3271
Cited by:  Papers (2)
| | PDF (948 KB) | HTML

An efficient algorithm to compute the scattering properties of a multilayered periodic structure with an arbitrary skewed grid using a hybrid finite-difference time-domain/generalized scattering matrix technique is described. In this algorithm, the constant horizontal wavenumber approach for an arbitrary skewed grid is used to compute the scattering parameters of each periodic layer. A complete Fl... View full abstract»

• ### Transmission-Line Metamaterials on a Skewed Lattice for Transformation Electromagnetics

Publication Year: 2011, Page(s):3272 - 3282
Cited by:  Papers (9)
| | PDF (913 KB) | HTML

We propose a lattice of skewed transmission lines to implement a full effective material tensor. First we show, using transformation electromagnetics, how a skewed lattice will introduce off-diagonal components in the material tensor. We then show how this can be extended to a transmission-line network placed on a skewed lattice, using periodic analysis of a 2-D transmission-line network. We also ... View full abstract»

• ### Modeling Material Interfaces and Boundary Conditions in High-Order Finite-Difference Methods

Publication Year: 2011, Page(s):3283 - 3293
| | PDF (1021 KB) | HTML

When solving the transmission-line equations using high-order finite-difference methods, it is extremely important to have appropriate procedures to enforce boundary conditions as well as the continuity of the fields at material interfaces where the material parameters are discontinuous. This paper presents general procedures to accomplish these two tasks on both uniform and nonuniform grids. The ... View full abstract»

• ### A Rigorous Solution to the Low-Frequency Breakdown in Full-Wave Finite-Element-Based Analysis of General Problems Involving Inhomogeneous Lossless/Lossy Dielectrics and Nonideal Conductors

Publication Year: 2011, Page(s):3294 - 3306
Cited by:  Papers (13)
| | PDF (828 KB) | HTML

Existing methods for solving the low-frequency breakdown problem associated with full-wave solvers rely on low-frequency approximations, which has left a number of research questions to be answered. The conductors are also generally treated as perfect conductors and the dielectric loss is not considered. In this work, a rigorous method that does not utilize low-frequency approximations is develope... View full abstract»

• ### Realization of Practical Lumped Element All-Pass Networks for Delay Equalization of RF and Microwave Filters

Publication Year: 2011, Page(s):3307 - 3311
Cited by:  Papers (5)
| | PDF (224 KB) | HTML

All-pass networks of the second order used for delay equalization are described in various textbooks, but are frequently quite unrealizable due to impractical circuit element values. This problem has now been solved using new network transformations having simple design equations. An example is given of an all-pass network used in the design of a lumped element delay-equalized filter having a pass... View full abstract»

• ### Modified Asymmetric Impedance Transformers (MCCTs and MCVTs) and Their Application to Impedance-Transforming Three-Port 3-dB Power Dividers

Publication Year: 2011, Page(s):3312 - 3321
Cited by:  Papers (10)
| | PDF (1402 KB) | HTML

For size reduction and design flexibility of impedance transformers, two modified asymmetric impedance transformers are suggested. They each consist of one open stub and two different transmission-line sections and are named a modified constant conductance-type transmission-line impedance transformer (MCCT) and a modified constant voltage-standing-wave-ratio (VSWR)-type transmission-line impedance... View full abstract»

• ### On-Chip Single-to-Balanced Multicoupled Line Bandpass Filters With Good Selectivity

Publication Year: 2011, Page(s):3322 - 3330
Cited by:  Papers (5)
| | PDF (1442 KB) | HTML

In this work, on-chip single-to-balanced bandpass filters with good selectivity are proposed. The functions of bandpass filter and balun are integrated using a simple multicoupled line structure along with capacitive loadings. The use of inductor is avoided such that the proposed single-to-balanced bandpass filters can achieve very compact size when implemented on chip. They can be designed with t... View full abstract»

• ### Compact Tunable Phase Shifters on Screen-Printed BST for Balanced Phased Arrays

Publication Year: 2011, Page(s):3331 - 3337
Cited by:  Papers (9)
| | PDF (1289 KB) | HTML

Two designs for compact continuously tunable phase shifters are presented employing integrated ferroelectric varactors based on screen-printed barium-strontium-titanate thick film. The circuits are based on left-handed transmission-line topologies that allow to realize very compact modules. The proposed designs have total lengths of 2.1 and 3.8 mm and provide a differential phase shift of more tha... View full abstract»

• ### Generalized TM Dual-Mode Cavity Filters

Publication Year: 2011, Page(s):3338 - 3346
Cited by:  Papers (25)
| | PDF (1982 KB) | HTML

A new cavity arrangement, namely, the generalized TM dual-mode cavity, is presented in this paper. In contrast with the previous contributions on TM dual-mode filters, the generalized TM dual-mode cavity allows the realization of both symmetric and asymmetric filtering functions, simultaneously exploiting the maximum number of finite frequency transmission zeros. The high design flexibility in ter... View full abstract»

• ### Generalized Multiport Waveguide Switches Based on Multiple Short-Circuit Loads in Power-Divider Junctions

Publication Year: 2011, Page(s):3347 - 3355
Cited by:  Papers (7)
| | PDF (1627 KB) | HTML

This paper presents a new concept for multiport waveguide switches based on short-circuit loads integrated in power-divider ridge-waveguide junctions. The switching is achieved by means of actuating short and open circuit loads in the waveguide path of a ridge waveguide, eliminating the need of bulky rotors, which are typically used in conventional waveguide switches. A complete class of single-po... View full abstract»

• ### Chipless RFID Tag Using Hybrid Coding Technique

Publication Year: 2011, Page(s):3356 - 3364
Cited by:  Papers (79)  |  Patents (1)
| | PDF (1241 KB) | HTML

Increasing the coding capacity of chipless RFID tags is a key factor while considering the development of miniaturized tags. A novel hybrid coding technique by combining phase deviation and frequency position encoding is proposed here. A coding capacity of 22.9 bits is obtained simply with five resonators within a reduced dimension of 2 cm × 4 cm. The proposed tag is based on 5 `C' like met... View full abstract»

• ### Waveguide Antenna Feeders With Integrated Reconfigurable Dual Circular Polarization

Publication Year: 2011, Page(s):3365 - 3374
Cited by:  Papers (11)  |  Patents (1)
| | PDF (2038 KB) | HTML

Waveguide antenna feeders with reconfigurable circular polarization sense are proposed in this paper. They can be switched between right and left hand circular polarization, without any mechanical rotation between the feeder and the antenna. Two types of feeders are presented. The polarizer works with a single switchable polarization for each state. The dual feeder can work with both polarizations... View full abstract»

• ### Novel Dual-Mode Retrodirective Array Using Synthesized Microstrip Lines

Publication Year: 2011, Page(s):3375 - 3388
Cited by:  Papers (12)
| | PDF (2642 KB) | HTML

In this paper, an innovative architecture for realizing a dual-mode retrodirective array (RDA) is proposed and experimentally validated. The new design functions as a reflection-type RDA in one frequency band and features the characteristics of a Van Atta array in the other band. A unique 50-Ω synthesized microstrip line is applied to fulfill the core building blocks of this RDA, i.e., the ... View full abstract»

• ### Tunable Inter-Resonator Coupling Structure With Positive and Negative Values and Its Application to the Field-Programmable Filter Array (FPFA)

Publication Year: 2011, Page(s):3389 - 3400
Cited by:  Papers (24)
| | PDF (1288 KB) | HTML

In this paper, we show a tunable inter-resonator coupling structure capable of varying the coupling coefficient between resonators from positive to negative values, including values that approach zero. The presented inter-resonator coupling structure can be tuned to generate large isolation between two resonators as well as the required coupling for filter responses. Using the inter-resonator coup... View full abstract»

• ### High-$Q$ Tunable Dielectric Resonator Filters Using MEMS Technology

Publication Year: 2011, Page(s):3401 - 3409
Cited by:  Papers (23)  |  Patents (1)
| | PDF (2639 KB) | HTML

This paper presents the design and implementation of a new class of high-Q tunable dielectric resonator (DR) filters based on microelectromechanical systems (MEMS) technology. The use of MEMS tuning elements results in the compact implementation of the proposed filters with high-Q and near to zero dc power consumption. The proposed filters consist of disk-shaped dielectric resonators with circular... View full abstract»

• ### Parylene Interposer as Thin Flexible 3-D Packaging Enabler for Wireless Applications

Publication Year: 2011, Page(s):3410 - 3418
Cited by:  Papers (4)
| | PDF (1050 KB) | HTML

This paper presents a novel, all-Parylene, thin, flexible 3-D packaging technology with an application demonstration of wireless powering. Parylene is utilized as a base substrate of a packaging interposer, and multilayer thin films are conformally stacked on the Parylene substrate. High-density (450 pF/mm2) metal-insulator-metal capacitors are implemented with an ultrathin (~47 nm) dep... View full abstract»

• ### Linearity Characterization and Optimization of Millimeter-Wave GaN HEMTs

Publication Year: 2011, Page(s):3419 - 3427
Cited by:  Papers (4)
| | PDF (2010 KB) | HTML

This paper presents the first comprehensive study of the linearity characteristics of GaN/SiC high-electron mobility transistors (HEMTs) at millimeter-wave (mmW). Similar size devices from three sources are compared using AM-AM, AM-PM, two-tone, and 16-quadrature-amplitude modulation (16QAM) modulated waveforms measurements at 31.5 GHz. Additionally, error vector magnitude (EVM) and spectrum regro... View full abstract»

• ### Optimized Design of Pulsed Waveform Oscillators and Frequency Dividers

Publication Year: 2011, Page(s):3428 - 3440
Cited by:  Papers (7)
| | PDF (1952 KB) | HTML

A technique is presented for the optimized design of oscillators and frequency dividers based on nonlinear transmission lines (NLTLs). The oscillator design relies on a closed-loop configuration containing a high-efficiency amplifier, with the loop output matched to a short NLTL. Attention is paid to the oscillator phase noise. A simple and general-application method is presented for an accurate c... View full abstract»

• ### Analysis and Design of Millimeter-Wave Low-Power CMOS LNA With Transformer-Multicascode Topology

Publication Year: 2011, Page(s):3441 - 3454
Cited by:  Papers (22)  |  Patents (1)
| | PDF (1833 KB) | HTML

In this paper, the analysis and design of a CMOS multicascode configuration with a noise-reduction transformer topology are presented. Two low-power (LP), miniature, and wideband low-noise amplifiers (LNAs) were designed and fabricated for demonstration. One with a transformer triple-cascode configuration was designed at V-band, and the other with a transformer quadruple-cascode configurati... View full abstract»

• ### ESD-Protected K-Band Low-Noise Amplifiers Using RF Junction Varactors in 65-nm CMOS

Publication Year: 2011, Page(s):3455 - 3462
Cited by:  Papers (8)  |  Patents (1)
| | PDF (1374 KB) | HTML

This paper presents two K-band low-noise amplifiers (LNAs) in 65-nm CMOS using the proposed RF junction varactors as the ESD protection devices. The junction varactors are customized for the RF ESD applications with accurate equivalent circuit models. The experimental results demonstrate excellent second breakdown currents (It2) and high ratios of the ESD level to parasitic capac... View full abstract»

• ### A Multimode/Multiband Envelope Tracking Transmitter With Broadband Saturated Amplifier

Publication Year: 2011, Page(s):3463 - 3473
Cited by:  Papers (38)  |  Patents (2)
| | PDF (2453 KB) | HTML

A multimode/multiband envelope tracking (ET) transmitter consisting of a hybrid switching amplifier (HSA) and a broadband saturated power amplifier (PA) is developed for operation across 1.3 to 2.7 GHz. For the various standard signals with different bandwidth (BW) and peak-to-average power ratio, the HSA efficiently provides supply signals to the PA by changing the reference value of the hysteres... 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