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# IEEE Transactions on Microwave Theory and Techniques

## Filter Results

Displaying Results 1 - 25 of 34
• ### Table of contents

Publication Year: 2009, Page(s):C1 - C4
| PDF (52 KB)
• ### IEEE Transactions on Microwave Theory and Techniques publication information

Publication Year: 2009, Page(s): C2
| PDF (44 KB)
• ### A Phase-Locked Loop With Injection-Locked Frequency Multiplier in 0.18-$mu{hbox{m}}$ CMOS for $V$ -Band Applications

Publication Year: 2009, Page(s):1629 - 1636
Cited by:  Papers (28)
| | PDF (939 KB) | HTML

In this paper, a novel CMOS phase-locked loop (PLL) integrated with an injection-locked frequency multiplier (ILFM) that generates the V-band output signal is proposed. Since the proposed ILFM can generate the fifth-order harmonic frequency of the voltage-controlled oscillator (VCO) output, the operational frequency of the VCO can be reduced to only one-fifth of the desired frequency. With ... View full abstract»

• ### Design and Analysis of a 55–71-GHz Compact and Broadband Distributed Active Transformer Power Amplifier in 90-nm CMOS Process

Publication Year: 2009, Page(s):1637 - 1646
Cited by:  Papers (58)
| | PDF (1524 KB) | HTML

A 55-71-GHz fully integrated power amplifier (PA) using a distributed active transformer (DAT) is implemented in 90-nm RF/MS CMOS technology. The DAT combiner, featuring efficient power combination and direct impedance transformation, is suitable for millimeter-wave (MMW) PA design. Systematic design procedures including an impedance allocation plan, a compensation line, and a gain boosting techni... View full abstract»

• ### High-Efficiency LDMOS Power-Amplifier Design at 1 GHz Using an Optimized Transistor Model

Publication Year: 2009, Page(s):1647 - 1654
Cited by:  Papers (26)
| | PDF (1098 KB) | HTML

A 10-W LDMOS harmonically tuned power amplifier at 1 GHz with state-of-the-art power-added efficiency of 80% is presented. The fundamental and second-harmonic load impedances are optimized for maximum efficiency while other harmonics are blocked by a low-pass load network. A simplified model of the transistor specialized for harmonically tuned and switched mode operations is proposed and used for ... View full abstract»

• ### Micromachined Millimeter-Wave Rectangular-Coaxial Branch-Line Coupler With Enhanced Bandwidth

Publication Year: 2009, Page(s):1655 - 1660
Cited by:  Papers (18)
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Wideband millimeter-wave branch-line couplers have been demonstrated using micromachined air-filled rectangular-coaxial lines supported by quarter-wavelength stubs. The coaxial lines are constructed by bonding five layers of gold-plated silicon or SU8 slices. The measured coupler shows an insertion loss of 3.2-4.0 dB in the coupled and thru ports between the frequencies 31.3-47.6 GHz. The isolatio... View full abstract»

• ### Novel Numerical Method for the Analysis and Synthesis of the Fields in Highly Oversized Waveguide Mode Converters

Publication Year: 2009, Page(s):1661 - 1668
Cited by:  Papers (39)
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A numerical method for the analysis of the fields in highly oversized waveguides is proposed in this paper. This method allows the simulation of the fields on waveguide walls with arbitrary surface deformations in the case that the waveguide is highly oversized, and the wall deformations are shallow and smooth. Combined with the analysis method, an algorithm has been developed for synthesizing the... View full abstract»

• ### Experimental Investigation of a Self-Biased Microstrip Circulator

Publication Year: 2009, Page(s):1669 - 1674
Cited by:  Papers (19)
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An experimental investigation of an above-ferromagnetic resonant self-biased hexagonal ferrite circulator is detailed in this paper. The concept of the ldquoregion of opportunityrdquo is invoked to establish a relationship between the ferrite's geometry and its MH large-signal data for self-biased operation. This concept is used to design a working three-port nonreciprocal device that will serve a... View full abstract»

• ### A Polar Transmitter With CMOS Programmable Hysteretic-Controlled Hybrid Switching Supply Modulator for Multistandard Applications

Publication Year: 2009, Page(s):1675 - 1686
Cited by:  Papers (83)  |  Patents (8)
| | PDF (2286 KB) | HTML

This paper presents the realization of a linear polar transmitter supporting multistandard applications. The harmonic-tuned class-AB biased (class-AB/F) power amplifier (PA) with the novel envelope shaping method linearly amplifies the input signal with high efficiency. The hybrid switching supply modulator with programmable hysteretic comparator enables the multimode operation whatever the envelo... View full abstract»

• ### TEDS Base-Station Power Amplifier Using Low-Noise Envelope Tracking Power Supply

Publication Year: 2009, Page(s):1687 - 1693
Cited by:  Papers (8)  |  Patents (1)
| | PDF (885 KB) | HTML

This paper demonstrates a highly linear and efficient TETRA enhanced data service (TEDS) base-station RF power amplifier (RFPA). Based on the well-known combination of an envelope tracking (ET) power supply and a linear class-A/B RFPA, adequate adjacent channel power ratio (ACPR) and wideband noise performance is shown to be enabled only by further incorporating high-bandwidth Cartesian feedback (... View full abstract»

• ### Periodic Structure on the Slot Resonators in Microstrip Transmission Line

Publication Year: 2009, Page(s):1694 - 1699
Cited by:  Papers (8)
| | PDF (1222 KB) | HTML

In this paper, scattering and phase-shift characteristics of 1-D periodic structures based on slot resonators in a ground plane of a microstrip line were studied. The scattering matrix of a slot resonator in a microstrip line ground plane was calculated by the two methods: using from scattering matrix of microstrip-slotline transition, and rigorous calculation of slot resonator in microstrip line.... View full abstract»

• ### Modeling and Performance Characterization of UHF RFID Portal Applications

Publication Year: 2009, Page(s):1700 - 1706
Cited by:  Papers (12)
| | PDF (1034 KB) | HTML

UHF RF indentification systems integration into existing processes is a major challenge for trading companies and retailers. The installation of antennas and interrogators and the portal configuration for achieving a required read rate is difficult, and in most cases, sub-optimally implemented. Therefore, it is essential to understand the relationship between achievable read rates and portal setup... View full abstract»

• ### Electromagnetic Modeling of Hot-Wire Detonators

Publication Year: 2009, Page(s):1707 - 1713
Cited by:  Papers (9)
| | PDF (724 KB) | HTML

An effort is underway to determine the electromagnetic (EM) characteristics of hot-wire detonators in order to quantify more precisely how they might respond to modern EM illumination. These analyses provide a precise tailored approach to EM safety and insights into IEEE Standard C95.7-2005. The analyses include a comprehensive investigation of physical detonator characteristics, which is then use... View full abstract»

• ### Reflection-Type Artificial Dielectric Substrate Microstrip Dispersive Delay Line (DDL) for Analog Signal Processing

Publication Year: 2009, Page(s):1714 - 1723
Cited by:  Papers (14)
| | PDF (1335 KB) | HTML

A reflection-type artificial dielectric substrate (ADS) microstrip dispersive delay line (DDL) for analog signal processing is presented. This DDL is realized by nonuniformly alternating conventional and ADS microstrip sections with a linearly increasing period (linear group delay or constant chirp) so that the different spectral components of a modulated signal incur different delays proportional... View full abstract»

• ### Novel Methods for Modeling of Multiple Vias in Multilayered Parallel-Plate Structures

Publication Year: 2009, Page(s):1724 - 1733
Cited by:  Papers (28)
| | PDF (965 KB) | HTML

This paper presents novel modeling methods for accurate and efficient analysis of coupling of multiple vias in finite-sized multilayered parallel-plate structures. The new modeling methods address two open problems related to the modal expansion with the T-matrix method for the analysis of via coupling. First, a novel boundary modeling method, called the frequency-dependent cylinder layer (FDCL), ... View full abstract»

• ### Generalized Partial-Element Equivalent-Circuit Analysis for Planar Circuits With Slotted Ground

Publication Year: 2009, Page(s):1734 - 1742
Cited by:  Papers (8)
| | PDF (737 KB) | HTML

A generalized partial-element equivalent-circuit (PEEC) method is proposed for modeling a planar circuit with a thin narrow slot on the ground. The approach is based on the coupled mixed potential integral equations for a problem with mixed electric and magnetic currents. The coupled integral equations are converted into a lumped-element circuit network using Kirchhoff's voltage law and Kirchhoff'... View full abstract»

• ### A New Approach to Microwave Power Amplifier Design Based on the Experimental Characterization of the Intrinsic Electron-Device Load Line

Publication Year: 2009, Page(s):1743 - 1752
Cited by:  Papers (50)
| | PDF (1493 KB) | HTML

This paper presents a new original approach to power amplifier design, which is mainly based on low-frequency nonlinear empirical electron device (ED) characterization. The proposed technique enables the same level of accuracy provided by expensive load-pull measurement systems to be obtained through a relatively simple and low-cost setup. Moreover, ED currents and voltages related to reliability ... View full abstract»

• ### A Novel Crossed Resonator and Its Applications to Bandpass Filters

Publication Year: 2009, Page(s):1753 - 1759
Cited by:  Papers (64)
| | PDF (1156 KB) | HTML

A novel open and short stubs loaded crossed resonator and its applications to cross-coupling filter and tri-band bandpass filters are presented in this paper. Based on the lossless transmission line model analysis, it is found that the first three resonance frequencies of the crossed resonator can be conveniently controlled. Benefiting from this feature, the resonator can be utilized to design not... View full abstract»

• ### Dual-Band Dielectric-Resonator Filters

Publication Year: 2009, Page(s):1760 - 1766
Cited by:  Papers (18)
| | PDF (1082 KB) | HTML

A novel dual-band dielectric resonator constructed from a single piece of high-K ceramic substrate is presented in this paper. The proposed dual-band dielectric resonator is employed to implement dual-band filters whose center frequencies and bandwidths of the first and second passbands can be controlled independently. To illustrate the concept, two dual-band filters of this type with diffe... View full abstract»

• ### 8-GHz Narrowband High-Temperature Superconducting Filter With High Selectivity and Flat Group Delay

Publication Year: 2009, Page(s):1767 - 1773
Cited by:  Papers (16)
| | PDF (532 KB) | HTML

This paper reports a development of a narrowband high-temperature superconducting filter with both high selectivity and flat group delay. The filter has a center frequency of 8.625 GHz and a 3-dB bandwidth of 42 MHz (a fractional bandwidth of 0.49%). In order to achieve both high band-edge steepness and excellent group-delay flatness, we introduce a 14-resonator quasi-elliptic function response wi... View full abstract»

• ### Miniaturized Bandpass Filters With Double-Folded Substrate Integrated Waveguide Resonators in LTCC

Publication Year: 2009, Page(s):1774 - 1782
Cited by:  Papers (51)
| | PDF (1649 KB) | HTML

This paper proposes miniaturized bandpass filters with double-folded substrate integrated waveguide (SIW) resonators using multilayer low-temperature co-fired ceramic (LTCC) technology. Formed by inserting a metal plate with two orthogonal slots into the cavity, the double-folded SIW resonator is used for the circuit size reduction with its footprint about a quarter of the conventional TE101<... View full abstract»

• ### A Wideband Superconducting Filter Using Strong Coupling Resonators for Radio Astronomy Observatory

Publication Year: 2009, Page(s):1783 - 1789
Cited by:  Papers (14)
| | PDF (481 KB) | HTML

A 12-pole wideband superconducting microstrip bandpass filter, which has a fractional bandwidth of 38% and a center frequency of 1455 MHz, is presented for the Miyun 50-m radio astronomy telescope, Beijing, China. A novel resonator, which can not only generate very large coupling, but also push its first spurious resonant peak away from the passband, is introduced. A new style interleaved coupling... View full abstract»

• ### Design of Tri-Band Filters With Improved Band Allocation

Publication Year: 2009, Page(s):1790 - 1797
Cited by:  Papers (50)
| | PDF (1018 KB) | HTML

A new design method for tri-band filters with improved band allocation is proposed. The design concept treats different band allocations with different methodologies. For the bands assigned to adjacent frequency regions, transmission zeros are introduced to split one of the single bands into two. For the bands that are assigned separately, different harmonic modes of stepped-impedance resonators a... View full abstract»

• ### Low-Pass Filter Design Through the Accurate Analysis of Electromagnetic-Bandgap Geometry on the Ground Plane

Publication Year: 2009, Page(s):1798 - 1805
Cited by:  Papers (9)
| | PDF (927 KB) | HTML

This paper presents an accurate design technique for a low-pass filter (LPF) with a dumbbell-shaped slot (DSS) in the ground plane. In the proposed technique, a new simplified DSS inductance equation is suggested and modified to account for the stub parasitic inductance of the LPF. The compensated inductance of the DSS is determined from the modified DSS inductance equation. As a result, additiona... View full abstract»

• ### Small Wideband Coupled-Line Ring Hybrids With No Restriction on Coupling Power

Publication Year: 2009, Page(s):1806 - 1817
Cited by:  Papers (19)
| | PDF (1387 KB) | HTML

To realize any coupled-line ring hybrid without any restriction on coupling power, a set of coupled-line sections with two shorts was synthesized using one- and two-port equivalent circuits, and design equations were derived to yield perfect matching regardless of the coupling power. Based on the design equations, a new modified Pi-type transmission-line equivalent circuit is suggested. It consist... 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