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# IEEE Transactions on Microwave Theory and Techniques

## Issue 11  Part 1 • Nov. 2010

This issue contains several parts.Go to:  Part 2

## Filter Results

Displaying Results 1 - 25 of 33

Publication Year: 2010, Page(s):C1 - C4
| PDF (52 KB)
• ### IEEE Transactions on Microwave Theory and Techniques publication information

Publication Year: 2010, Page(s): C2
| PDF (44 KB)
• ### A Millimeter-Wave (24/31-GHz) Dual-Band Switchable Harmonic Receiver in 0.18-$mu$m SiGe Process

Publication Year: 2010, Page(s):2717 - 2730
Cited by:  Papers (7)
| | PDF (1071 KB) | HTML

A dual-band switchable harmonic receiver for downconverting the industrial-scientific-medical and local-multipoint-distribution-service bands at 24 and 31 GHz is proposed in this paper. The front end utilizes a new technique for band selection. Mathematical formulation, including the effect of mismatches, for the new switchable harmonic receiver is provided in this paper. In addition, new circuit ... View full abstract»

• ### A 20–32-GHz Wideband Mixer With 12-GHz IF bandwidth in 0.18-$mu{hbox {m}}$ SiGe Process

Publication Year: 2010, Page(s):2731 - 2740
Cited by:  Papers (10)
| | PDF (720 KB) | HTML

This paper presents a 20-32-GHz wideband BiCMOS mixer with an IF bandwidth of 12 GHz. The mixer utilizes an inductive peaking technique to extend the bandwidth of the downconverted IF signal. To our knowledge, the proposed mixer achieves the widest IF bandwidth using silicon-based technologies in K-band. Analytical expressions for the conversion gain and output noise of the proposed mixer are pres... View full abstract»

• ### Parasitic Compensation Design Technique for a C-Band GaN HEMT Class-F Amplifier

Publication Year: 2010, Page(s):2741 - 2750
Cited by:  Papers (27)  |  Patents (1)
| | PDF (1423 KB) | HTML

A class-F/inverse class-F load circuit design method that includes parasitic elements such as drain-source capacitance and bonding wire inductance has been developed. For the class-F load circuit design, a reactance function which has zeros at even harmonic frequencies and poles at odd harmonic frequencies is expanded to an -ladder circuit including parasitic elements through the use of the second... View full abstract»

• ### A 5.8 GHz Integrated CMOS Dedicated Short Range Communication Transceiver for the Korea/Japan Electronic Toll Collection System

Publication Year: 2010, Page(s):2751 - 2763
Cited by:  Papers (15)
| | PDF (1380 KB) | HTML

In this paper, a RF front-end of the 5.8 GHz integrated CMOS dedicated short range communication (DSRC) transceiver for the Korea/Japan electronic toll collection system is presented. The receiver uses low-IF conversion architecture for high sensitivity and low-power consumption while the transmitter uses direct up-conversion architecture for its simple structure and reliability. To solve image pr... View full abstract»

• ### Adaptive Input-Power Distribution in Doherty Power Amplifiers for Linearity and Efficiency Enhancement

Publication Year: 2010, Page(s):2764 - 2771
Cited by:  Papers (30)  |  Patents (3)
| | PDF (1224 KB) | HTML

A new technique based on an adaptive input-power distribution is introduced to overcome the limitations of practical Doherty power amplifiers. The proposed Doherty amplifier employs an extended-resonance power-divider at its input. By taking advantage of the auxiliary cell's nonlinear input impedance, the extended-resonance divider is designed such that it provides a proper power-dependent power-d... View full abstract»

• ### Linearly Polarized Modes of a Corrugated Metallic Waveguide

Publication Year: 2010, Page(s):2772 - 2780
Cited by:  Papers (24)  |  Patents (1)
| | PDF (751 KB) | HTML

A linearly polarized (LPmn) mode basis set for oversized, corrugated, metallic waveguides is derived for the special case of quarter-wavelength-depth circumferential corrugations. The relationship between the LPmn modes and the conventional modes (HEmn, EHmn, TE0n, TM0n) of the corrugated guide is shown. The loss in a gap or equival... View full abstract»

• ### Arbitrary Electromagnetic Conductor Boundaries Using Faraday Rotation in a Grounded Ferrite Slab

Publication Year: 2010, Page(s):2781 - 2793
Cited by:  Papers (22)
| | PDF (1623 KB) | HTML

The realization of arbitrary perfect electromagnetic conductor boundaries by a grounded ferrite slab using Faraday rotation is proposed. This is the first practical realization of a perfect electromagnetic conductor boundary to the authors' knowledge. The key principle of the grounded ferrite perfect electromagnetic conductor boundary is the combination of Faraday rotation and reflection from the ... View full abstract»

• ### Greatly Enhanced Permeability and Expanded Bandwidth for Spinel Ferrite Composites With Flaky Fillers

Publication Year: 2010, Page(s):2794 - 2799
Cited by:  Papers (2)
| | PDF (327 KB) | HTML

Spinel ferrite flakes are prepared for use as fillers in electromagnetic (EM) composites. EM attenuation composites with the flaky fillers exhibit greatly enhanced high-frequency magnetic properties and attenuation properties. The complex permeability, μ'r,o and μ"r,max, is enhanced by above 300%, and the relative attenuation bandwidth Wp is increased... View full abstract»

• ### Investigation of a Class-J Power Amplifier With a Nonlinear $C_{rm out}$ for Optimized Operation

Publication Year: 2010, Page(s):2800 - 2811
Cited by:  Papers (52)
| | PDF (1962 KB) | HTML

This paper presents the operation principle of Class-J power amplifiers (PAs) with linear and nonlinear output capacitors (Couts). The efficiency of a Class-J amplifier is enhanced by the nonlinear capacitance because of the harmonic generation from the nonlinear Cout, especially the second-harmonic voltage component. This harmonic voltage allows the reduction of the phase di... View full abstract»

• ### Accurate Power Efficiency Estimation of GHz Wireless Delta-Sigma Transmitters for Different Classes of Switching Mode Power Amplifiers

Publication Year: 2010, Page(s):2812 - 2819
Cited by:  Papers (29)
| | PDF (782 KB) | HTML

This paper proposes a new closed-form expression for computing the power efficiency of delta-sigma (DS) radio frequency (RF) transmitters. Due to the large bandwidth of the pulsewidth modulated (PWM) signal at the output of the DS modulator, the peak efficiency of the power amplifier (PA) when driven by a PWM signal is considerably different than its peak efficiency when the input signal is a cont... View full abstract»

• ### Design of Highly Efficient Load Modulation Transmitter for Wideband Cellular Applications

Publication Year: 2010, Page(s):2820 - 2828
Cited by:  Papers (18)
| | PDF (1550 KB) | HTML

In this paper, the high potential of varactor-based dynamic load modulation (DLM) techniques for wideband cellular applications is demonstrated. A systematic design procedure is proposed to ensure high-efficiency wideband performance. It incorporates harmonically tuned power amplifier (PA) concepts and tunable matching techniques in an integrated design. A DLM transmitter at 2.65 GHz with a peak o... View full abstract»

• ### Shape-Preserving Response Prediction for Microwave Design Optimization

Publication Year: 2010, Page(s):2829 - 2837
Cited by:  Papers (65)
| | PDF (547 KB) | HTML

A shape-preserving response prediction methodology for microwave design optimization is introduced. The presented technique allows us to estimate the response of the microwave structure being optimized (fine model) using a computationally cheap representation of the structure (coarse model). The change of the coarse model response is described by the translation vectors corresponding to certain (f... View full abstract»

• ### On the Design of Pulsed Sources and Spread Compensation in Finite-Difference Time-Domain Electromagnetic Simulations

Publication Year: 2010, Page(s):2838 - 2849
Cited by:  Papers (2)
| | PDF (546 KB) | HTML

This paper first describes the phenomenon of Gaussian pulse spread due to numerical dispersion in the finite-difference time-domain (FDTD) method for electromagnetic computation. This effect is undesired, as it reduces the precision with which multipath pulses can be resolved in the time domain. The quantification of the pulse spread is thus useful to evaluate the accuracy of pulsed FDTD simulatio... View full abstract»

• ### Extraction of Equivalent Network of Arbitrarily Shaped Power-Ground Planes With Narrow Slots Using a Novel Integral Equation Method

Publication Year: 2010, Page(s):2850 - 2855
Cited by:  Papers (6)
| | PDF (754 KB) | HTML

A novel integral equation method for efficient and accurate modeling of power-ground planes with narrow slots is provided in this paper. The equivalence principle is used to extend finite-size power-ground planes to infinite parallel planes. The discontinuities in the original power-ground planes, including the slot, via clearance, and boundary, are represented by equivalent electric and magnetic ... View full abstract»

• ### Preconditioned Second-Order Multi-Point Passive Model Reduction for Electromagnetic Simulations

Publication Year: 2010, Page(s):2856 - 2866
Cited by:  Papers (9)
| | PDF (701 KB) | HTML

A second-order multi-point Krylov subspace projection based model order reduction process for electromagnetic simulations is presented. The electromagnetic setup is converted to a second-order model-susceptance element based equivalent circuit. The state-space representation of this equivalent circuit is suitably reduced through a model order reduction process, where the recursive calculation of t... View full abstract»

• ### Design of Triple-Mode Ring Resonator for Wideband Microstrip Bandpass Filters

Publication Year: 2010, Page(s):2867 - 2877
Cited by:  Papers (23)
| | PDF (1161 KB) | HTML

A triple-mode microstrip ring resonator core for the design of bandpass filters is proposed in this paper. It is a modification of the conventional single-mode ring resonator with a pair of open-ended coupled lines and a shunt open stub for a transmission-line path of the ring substituted to form a triple-mode resonator. Since the triple-mode resonator possesses three resonances, one at the center... View full abstract»

• ### Analysis and Design of Single-to-Balanced Combline Bandpass Filters With Two Independently Controllable Transmission Zeros in LTCC Technology

Publication Year: 2010, Page(s):2878 - 2887
Cited by:  Papers (12)  |  Patents (1)
| | PDF (830 KB) | HTML

In this paper, the analysis and design of single-to-balanced combline bandpass filter are presented. The cross-coupled effect is introduced to create two transmission zeros that can be located independently in either the upper or lower stopband. Notably, the effect of nonadjacent line coupling on the filter response is properly addressed, and an efficient way to compensate it is proposed. Also, th... View full abstract»

• ### Design of Compact Dual-Mode Microstrip Filters

Publication Year: 2010, Page(s):2888 - 2895
Cited by:  Papers (14)
| | PDF (905 KB) | HTML

This paper presents a novel filter design technique for the compact microstrip dual-mode filters. An equivalent circuit for the single dual-mode filter section is derived to show that a single unit behaves as a pair of coupled synchronously tuned single-mode resonators. The equivalent circuit was linked to the inverter-coupled bandpass prototype network to allow higher order filters to be realized... View full abstract»

• ### Super Compact Low-Temperature Co-Fired Ceramic Bandpass Filters Using the Hybrid Resonator

Publication Year: 2010, Page(s):2896 - 2907
Cited by:  Papers (21)
| | PDF (1193 KB) | HTML

A novel low-temperature co-fired ceramic (LTCC) resonator is proposed based on the hybrid resonant circuits. The resonator exhibits a very compact size and is also able to introduce a transmission zero in the filter design. A super compact bandpass filter with high performance was designed at the center frequency of 2.45 GHz and fabricated using the proposed LTCC hybrid resonator. This filter has ... View full abstract»

• ### Micro-Coaxial Impedance Transformers

Publication Year: 2010, Page(s):2908 - 2914
Cited by:  Papers (11)  |  Patents (3)
| | PDF (1308 KB) | HTML

This paper demonstrates two broadband air-filled micro-coaxial 4:1 (2-24 GHz) and 2.25:1 (2-22 GHz) impedance transformers. The 4:1 transformer converts 50 to 12.5 Ω and the 2.25:1 device transforms 50 to 22.22 Ω. The circuits are fabricated on silicon with PolyStrata technology, and are implemented with 650 μm × 400 μm air-filled micro-coaxial lines. Back-to-bac... View full abstract»

• ### Compact Planar Magic-T Based on the Double-Sided Parallel-Strip Line and the Slotline Coupling

Publication Year: 2010, Page(s):2915 - 2923
Cited by:  Papers (15)
| | PDF (2091 KB) | HTML

Two compact planar magic-T structures implemented on the double-sided parallel-strip line (DSPSL) and the slotline coupling are proposed and demonstrated. Due to a metallic ground inserted into the middle of the substrate for the double-sided parallel-strip line, the E-plane DSPSL power divider thus shows an intrinsic 180° out-of-phase characteristic between the two input/ output ports. A t... View full abstract»

• ### Miniaturized Quasi-Lumped Coupled-Line Single-Section and Multisection Directional Couplers

Publication Year: 2010, Page(s):2924 - 2931
Cited by:  Papers (16)  |  Patents (1)
| | PDF (665 KB) | HTML

A class of lumped-element coupled-line directional couplers has been investigated. The paper discusses the influence of the number of coupler's subsections on the overall couplers' performance. The design procedure for calculating elements of the coupler for the chosen coupling C and the number of coupler's subsections has been proposed. The design procedure has been experimentally verified by the... View full abstract»

• ### Design of Compact 90 $^{circ}$ and 180 $^{circ}$ Couplers With Harmonic Suppression Using Lumped-Element Bandstop Resonators

Publication Year: 2010, Page(s):2932 - 2939
Cited by:  Papers (10)
| | PDF (1083 KB) | HTML

Compact 3-dB 90° and 180° couplers with harmonic suppression using lumped-element bandstop resonators are proposed. The bandstop resonators are not only used to provide the high-pass and low-pass characteristics of conventional couplers, but also have a significant harmonic band rejection at the same time. Therefore, the required lumped-element inductors with a low quality factor are... 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