Special Notice
IEEE Xplore is transitioning to HTTPS on 9 April 2018. Customer access via EZproxy will require version 6 or higher with TLS 1.1 or 1.2 enabled.
Review our EZproxy Upgrade Checklist to ensure uninterrupted access.

# IEEE Transactions on Microwave Theory and Techniques

## Filter Results

Displaying Results 1 - 25 of 31

Publication Year: 2009, Page(s):C1 - C4
| PDF (51 KB)
• ### IEEE Transactions on Microwave Theory and Techniques publication information

Publication Year: 2009, Page(s): C2
| PDF (44 KB)
• ### Nonlinear Data Utilization: From Direct Data Lookup to Behavioral Modeling

Publication Year: 2009, Page(s):1425 - 1432
Cited by:  Papers (32)
| | PDF (709 KB) | HTML

This paper presents a comprehensive study on the effective utilization of large-signal measurement data in the nonlinear computer-aided design (CAD) process. To achieve this goal two distinctive, yet mutually complementary, approaches have been integrated. Measured nonlinear data was, in the first instance, directly integrated into a nonlinear CAD simulator, and in the second instance, utilized fo... View full abstract»

• ### A Tunable Metamaterial Frequency-Selective Surface With Variable Modes of Operation

Publication Year: 2009, Page(s):1433 - 1438
Cited by:  Papers (42)
| | PDF (891 KB) | HTML

A reconfigurable miniaturized-element frequency-selective surface (FSS) is presented in this paper. A standard waveguide measurement setup is used to evaluate the performance of the design. The proposed FSS consists of two periodic arrays of metallic loops, with the same periodicity, on either side of a very thin dielectric substrate. The tuning of the reconfigurable surface is shown numerically t... View full abstract»

• ### Mask Programmable CMOS Transistor Arrays for Wideband RF Integrated Circuits

Publication Year: 2009, Page(s):1439 - 1446
Cited by:  Papers (1)
| | PDF (1004 KB) | HTML

A mask programmable technology to implement RF and microwave integrated circuits using an array of standard 90-nm CMOS transistors is presented. Using this technology, three wideband amplifiers with more than 15-dB forward transmission gain operating in different frequency bands inside a 4-22-GHz range are implemented. The amplifiers achieve high gain-bandwidth products (79-96 GHz) despite their s... View full abstract»

• ### A Novel Analysis of a $Ku$-Band Planar p-i-n Diode Limiter

Publication Year: 2009, Page(s):1447 - 1460
Cited by:  Papers (18)
| | PDF (1776 KB) | HTML

Two new analyses for a single-stage limiter were presented; one is an analytic approach based on the approximation of the voltage waveforms of a p-i-n diode in the limiter, while the other models the p-i-n diode by a p-n diode. The analytic expressions resulting from the analytic approach explicitly show the role of the diode parameters on the limiter performances, which can be used as a guide to ... View full abstract»

• ### A Common-Gate Amplifier With Transconductance Nonlinearity Cancellation and Its High-Frequency Analysis Using the Volterra Series

Publication Year: 2009, Page(s):1461 - 1469
Cited by:  Papers (45)
| | PDF (854 KB) | HTML

A common-gate (CG) amplifier employing a transconductance nonlinearity cancellation technique is designed for transmitter circuitry. The major contributor to the third-order nonlinearity in the CG amplifier is the second derivative of the transconductor (g m ''), which is the same case with a common-source (CS) amplifier. The multiple gated transistor (MGTR) technique,... View full abstract»

• ### A Spectrum-Shaping Output Stage for IR-UWB Transmitters

Publication Year: 2009, Page(s):1470 - 1478
Cited by:  Papers (3)
| | PDF (1104 KB) | HTML

This paper presents a novel on-chip wideband balanced-to-unbalanced (balun) transition circuit based on a complementary current inversion method. The proposed circuit features an easily controllable wide bandpass characteristic and is intended to be used as an output stage to filter ill-defined spectra of time-domain ultra-wideband pulses to fit regulation masks. We investigated the circuit in an ... View full abstract»

• ### Millimeter-Wave Sensor With FMICW Capabilities for Medium-Range High-Resolution Radars

Publication Year: 2009, Page(s):1479 - 1486
Cited by:  Papers (3)
| | PDF (1000 KB) | HTML

Frequency-modulated continuous-wave (FMCW) radars offer many advantages such as low peak power, low probability of interception, low interference with other systems, and high-range resolution. However, their major drawback is the isolation required between the transmitter and receiver that typically leads to the use of two separate antennas for transmission and reception. Some schemes have been pr... View full abstract»

• ### Effects of Multigate-Feeding Structure on the Gate Resistance and RF Characteristics of 0.1-$mu{hbox{m}}$ Metamorphic High Electron-Mobility Transistors

Publication Year: 2009, Page(s):1487 - 1493
Cited by:  Papers (2)
| | PDF (2107 KB) | HTML

We investigate the effects of a multigate-feeding structure on the gate resistance (Rg) and RF characteristics of the high electron-mobility transistors (HEMTs). In this structure, the increase of Rg with the gatewidth (W) is minimized; therefore, high maximum frequency of oscillation (fmax) is achieved. Various numbers of gate feedings (Ngf) using the a... View full abstract»

• ### CPW to Rectangular Waveguide Transition on an ${hbox{LiNbO}}_{3}$ Substrate

Publication Year: 2009, Page(s):1494 - 1499
Cited by:  Papers (5)
| | PDF (1521 KB) | HTML

This paper presents transition from coplanar waveguide (CPW) to rectangular waveguide for W -band (75-110 GHz) operations. The waveguide consists of a cosine-shaped fin extending from the upper waveguide wall onto the CPW signal electrode. The design features direct integration of the waveguide with opto-electronic devices on lithium niobate (LiNbO3) for the applications of milli... View full abstract»

• ### Evaluation of Intermodulation Distortion of a Ferrite Element by the Two-Tone Method

Publication Year: 2009, Page(s):1500 - 1507
Cited by:  Papers (5)
| | PDF (2001 KB) | HTML

A method to evaluate the intermodulation distortion (IMD) of a ferrite element by the two-tone method is proposed in which a dual-mode resonator enables an intense RF magnetic field to be applied to the ferrite. A test fixture operating at frequencies around 2 GHz was designed and assembled based on this concept. The IMD was measured using the test fixture and different shapes of ferrites were use... View full abstract»

• ### Optimized Envelope Tracking Operation of Doherty Power Amplifier for High Efficiency Over an Extended Dynamic Range

Publication Year: 2009, Page(s):1508 - 1515
Cited by:  Papers (43)  |  Patents (5)
| | PDF (1291 KB) | HTML

This paper presents an optimized envelope tracking (ET) operation of a Doherty amplifier. Compared to the general ET/envelope elimination and restoration transmitter, it has an advantage of the extended dynamic range of 6 dB for the load modulation of a Doherty amplifier. Moreover, by modulating the supply voltage of the carrier amplifier, while that of the peaking amplifier is fixed, the supply m... View full abstract»

• ### An Analytical Design and Analysis Method for a High-Power Circular to Rectangular Waveguide Mode Converter and Its Applications

Publication Year: 2009, Page(s):1516 - 1525
Cited by:  Papers (13)
| | PDF (728 KB) | HTML

An analytical method to estimate the scattering of RF power into multiple modes inside a nonuniform waveguide using perturbation techniques is presented. This method is quite general, much faster than numerical methods, and may be applied to a wide variety of nonuniform waveguides. We have used this method to design and analyze a three-section mode transformer that converts a TE01 circu... View full abstract»

• ### $S$ -Parameter Sensitivities for Electromagnetic Optimization Based on Volume Field Solutions

Publication Year: 2009, Page(s):1526 - 1538
Cited by:  Papers (19)
| | PDF (1103 KB) | HTML

We propose a sensitivity analysis method that computes the S-parameter Jacobian from the volume E-field solutions in the frequency domain. The field solutions may be provided by any valid electromagnetic analysis. The computation is a post-process, which is independent from the simulator's grid, system equations, and discretization method. The sensitivity solver uses its own finite-d... View full abstract»

• ### A New Training Approach for Robust Recurrent Neural-Network Modeling of Nonlinear Circuits

Publication Year: 2009, Page(s):1539 - 1553
Cited by:  Papers (12)
| | PDF (1272 KB) | HTML

A new approach for developing recurrent neural-network models of nonlinear circuits is presented, overcoming the conventional limitations where training information depends on the shapes of circuit waveforms and/or circuit terminations. Using only a finite set of waveforms for model training, our technique enables the trained model to respond accurately to test waveforms of unknown shapes. To rela... View full abstract»

• ### Dual-Band Vertically Stacked Laminated Waveguide Filter Design in LTCC Technology

Publication Year: 2009, Page(s):1554 - 1562
Cited by:  Papers (40)  |  Patents (8)
| | PDF (1889 KB) | HTML

A new design method of dual-band filters with laminated waveguide (or substrate integrated waveguide) is proposed by taking advantage of the existence of multiple cavity modes. The major design concept is adequately choosing geometric shape of laminated waveguide resonators to control the frequency bands, and positions of open slots and feeding probes to realize the desired coupling coefficients a... View full abstract»

• ### Design and Application of Multimode Substrate Integrated Waveguides in Parallel Multichannel Signaling Systems

Publication Year: 2009, Page(s):1563 - 1571
Cited by:  Papers (15)
| | PDF (1839 KB) | HTML

Multimode signal transmission concept is employed in this paper to increase the channel capacity of a substrate integrated waveguide (SIW) interconnect. In order to generate two uncoupled channels without adding an additional physical link, TE10 and TE20 modes of an SIW interconnect are harnessed as signal carriers. To excite these two orthogonal modes simultaneously, a multi... View full abstract»

• ### Systematic Lumped-Element Modeling of Differential IC Transmission Lines

Publication Year: 2009, Page(s):1572 - 1580
Cited by:  Papers (5)
| | PDF (626 KB) | HTML

In this paper, we report a systematic and efficient approach to obtain lumped-element models for differential integrated-circuit interconnect transmission lines covering both the low-frequency R/C as well as the high-frequency quasi-TEM behavior. To accurately model signal delay and loss, and to preserve causality, the frequency dependence of both line resistance as well as the line inducta... View full abstract»

• ### On the Accuracy of the Parameters Extracted From $S$-Parameter Measurements Taken on Differential IC Transmission Lines

Publication Year: 2009, Page(s):1581 - 1588
Cited by:  Papers (7)
| | PDF (510 KB) | HTML

In this paper, we compare the accuracy of the telegrapher's equation transmission line parameters extracted with different methods from deembedded S-parameter measurements taken on differential integrated circuit transmission lines. We present a mathematical proof that conventional ldquoopen-shortrdquo deembedding is sufficient to extract the intrinsic propagation constant gamma of the tran... View full abstract»

• ### A Novel Power-Divider Design With Unequal Power-Dividing Ratio and Simple Layout

Publication Year: 2009, Page(s):1589 - 1594
Cited by:  Papers (44)
| | PDF (369 KB) | HTML

This paper presents the design of a novel power-divider circuit with an unequal power-dividing ratio. Unlike the conventional approaches, the characteristic impedance values of all the branch lines involved are independent of the dividing ratio. The electrical lengths of the line sections are the only circuit parameters to be adjusted. Moreover, the proposed structure does not require impedance tr... View full abstract»

• ### A Microwave Method for Noniterative Constitutive Parameters Determination of Thin Low-Loss or Lossy Materials

Publication Year: 2009, Page(s):1595 - 1601
Cited by:  Papers (29)  |  Patents (2)
| | PDF (973 KB) | HTML

A noniterative transmission-reflection method is proposed for instant measurement of constitutive parameters of thin samples attached to a sample holder. It uses reflection-only measurements for constitutive parameters determination thanks to the asymmetric nature of the structure (holder sample). In addition, the method can also measure the complex permittivity of the sample holder from transmiss... View full abstract»

• ### Scattering Analysis for Layered Cylindrical Object Perpendicularly Piercing the Wider Walls of a Rectangular Waveguide and Its Application to ${varepsilon _{r}}$ and ${mu _{r}}$ Measurement

Publication Year: 2009, Page(s):1602 - 1611
Cited by:  Papers (8)
| | PDF (530 KB) | HTML

This paper describes a novel analysis for the scattering problem of a layered cylindrical object that pierces a rectangular waveguide through a pair of holes made at the center of the wider walls. In this analysis, the S-parameters are rigorously formulated in terms of the modal scattering coefficients of the cylindrical object. Here, the modal scattering coefficients are expressed as solut... View full abstract»

• ### Scalable RF MEMS Switch Matrices: Methodology and Design

Publication Year: 2009, Page(s):1612 - 1621
Cited by:  Papers (25)  |  Patents (6)
| | PDF (2290 KB) | HTML

This paper proposes new solutions for implementing wideband large switch matrices. These solutions are based on crossbar and L-shaped topologies. This paper introduces a high-performance wideband switch cell to build up scalable NtimesN switch matrices and gives an account of the design, fabrication, and characteristics of the switch cell and a 3times3 crossbar switch matrix. The chosen design pro... View full abstract»

• ### Comments on "Closed-Form Solutions for the Design of Optimum Matching Networks"

Publication Year: 2009, Page(s): 1622
| | PDF (47 KB) | HTML

The above paper gives a closed-form equations for the design of matching networks for simple RC load networks up to degree 4. It also discusses impedance transformations and the case where both the source and load networks have specified reactive elements that require matching. The purpose of this comment is to point out that much simpler versions of such equations were presented in a paper publis... 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