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IEEE Transactions on Microwave Theory and Techniques

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Displaying Results 1 - 25 of 25

Publication Year: 2014, Page(s):C1 - C4
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• IEEE Transactions on Microwave Theory and Techniques publication information

Publication Year: 2014, Page(s): C2
| PDF (143 KB)
• An Analysis of the Leap-Frog Discontinuous Galerkin Method for Maxwell's Equations

Publication Year: 2014, Page(s):197 - 207
Cited by:  Papers (5)
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In this paper, we explore the accuracy limits of a finite-element time-domain (TD) method applied to the Maxwell equations, based on a discontinuous Galerkin scheme in space, and a leap-frog temporal integration. The dispersion and dissipation properties of the method are investigated, as well as the anisotropy of the errors. The results of this novel analysis are represented in a practical and co... View full abstract»

• An Envelope-Tracking Hybrid Field-Circuit Simulator for Narrowband Analysis of Nonlinearly Loaded Wire Antennas

Publication Year: 2014, Page(s):208 - 223
Cited by:  Papers (3)
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An envelope-tracking hybrid field-circuit simulator is proposed for efficiently analyzing narrowband scattering from wire antennas loaded with nonlinear devices. The simulator models the interactions of fields with wires and lumped elements by coupling and simultaneously solving the thin-wire electric field integral equation and Kirchhoff's equations, respectively. The coupled nonlinear system of ... View full abstract»

• The Intrinsic Impedance and Its Application to Backward and Forward Coupled-Line Couplers

Publication Year: 2014, Page(s):224 - 233
Cited by:  Papers (2)
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The even-odd-analysis of a reciprocal and twofold symmetrical four-port provides four eigenimpedances. A method for the derivation of the intrinsic impedance of the network from these eigenimpedances is shown. Once the conjugate complex of its intrinsic impedance is presented to the external ports of the network, it will be a quadrature coupler. The usefulness of the intrinsic impedance is shown e... View full abstract»

• Microstrip Line Negative Group Delay Filters for Microwave Circuits

Publication Year: 2014, Page(s):234 - 243
Cited by:  Papers (14)
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This paper presents a novel approach to the design and implementation of a distributed transmission line negative group delay filter (NGDF) with a predefined negative group delay (NGD) time. The newly proposed filter is based on a simple frequency transformation from a low-pass filter to a bandstop filter. The NGD time can be purely controlled by the resistors inserted into the resonators. The per... View full abstract»

• A Generalized Coupling Matrix Extraction Technique for Bandpass Filters With Uneven-Qs

Publication Year: 2014, Page(s):244 - 251
Cited by:  Papers (9)
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In this paper, a vector fitting (VF) based analytical extraction method, which is capable of accurately extracting the coupling matrix and the uneven unloaded Qs of each electric resonators of a filter, is presented. Having had the complex poles and residues determined using VF, the coupling matrix can be obtained by a sequence of complex orthogonal transformations. As a side product, the unloaded... View full abstract»

• Design of Ultra-Wideband Bandpass Filters With Fixed and Reconfigurable Notch Bands Using Terminated Cross-Shaped Resonators

Publication Year: 2014, Page(s):252 - 265
Cited by:  Papers (18)
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In this paper, a novel terminated cross-shaped resonator (TCSR) is analyzed and used to design ultra-wideband (UWB) bandpass filters (BPFs) with fixed and reconfigurable notch bands. It is found that the TCSR can exhibit a maximum three poles and two zeros when open and short terminations are applied. The intrinsic zero is simply used for the implementation of notch bands offering systematic desig... View full abstract»

• A Planar Bandpass Filter Implemented With a Hybrid Structure of Substrate Integrated Waveguide and Coplanar Waveguide

Publication Year: 2014, Page(s):266 - 274
Cited by:  Papers (14)
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In this paper, a novel planar bandpass filter is proposed, designed, and implemented with a hybrid structure of substrate integrated waveguide (SIW) and coplanar waveguide (CPW), which has the advantages of good passband and stopband performance inherited from SIW and miniaturized size accompanying with the CPW. Additional design flexibility is introduced by the hybrid structure for efficiently co... View full abstract»

• A ${rm TM}_{01}$ Mode Monoblock Dielectric Filter

Publication Year: 2014, Page(s):275 - 281
Cited by:  Papers (4)
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A novel TM01 monoblock dielectric filter is presented in this paper. The proposed filter is made from a single piece of ceramic with silver-plated external surfaces and a metallic lid for hosting tuning screws. The dominant TM01 mode is supported by a centered dielectric rod with one end short-circuited. Not requiring a metallic housing and dielectric resonator mounting fixtu... View full abstract»

• Tunable VHF Miniaturized Helical Filters

Publication Year: 2014, Page(s):282 - 289
Cited by:  Papers (15)
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In this paper, a miniaturization technique and a tuning concept that enable the realization of highly miniaturized and frequency reconfigurable helical filters are reported for the first time. The proposed filter design is based on tunable helical resonators with an internal volume of only 8.6 cm 3 and variable capacitive loading. A second-order bandpass filter was built and measured as... View full abstract»

• 0.73–1.03-GHz Tunable Bandpass Filter With a Reconfigurable 2/3/4-Pole Response

Publication Year: 2014, Page(s):290 - 296
Cited by:  Papers (16)
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This paper presents a tunable bandpass filter with a reconfigurable-pole response. 2-, 3-, and 4-pole states can be obtained based on employing series resonators with RF switches. The synthesis for the proposed filter is established, and the bandwidth for each pole state can be selected based on theory. The filter is built on a Duroid substrate with εr=10.2 and h=25 mil. The tuni... View full abstract»

• Compact High-Power SPST and SP4T RF MEMS Metal-Contact Switches

Publication Year: 2014, Page(s):297 - 305
Cited by:  Papers (7)
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This paper presents the design and characterization of compact high-power RF microelectromechanical system single-pole single-throw (SPST) and single-pole four-throw (SP4T) metal-contact switches. The SPST design results in a contact force of 1.9-2.8 mN at 80-90 V distributed over eight contacts and using four independent quadrants for actuation. The SP4T is a derivative of the SPST and results in... View full abstract»

• Ultra-Broadband Modulator Packaging for Millimeter-Wave Applications

Publication Year: 2014, Page(s):306 - 312
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This paper reports the RF packaging design for electrooptic modulators operating in the millimeter-wave domain and discusses the RF and optical performances of the module. An LiNbO3 phase modulator has been integrated in a compact housing offering a 1.0-mm RF coaxial input connector. A coplanar waveguide on a low dielectric-loss alumina substrate has been designed to transition the RF f... View full abstract»

• A sine-LO square-law harmonic-rejection mixer—theory, implementation, and application

Publication Year: 2014, Page(s):313 - 322
Cited by:  Papers (1)
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A square-law harmonic-rejection mixer (SL-HRM) driven by a sine local oscillator (LO) is proposed for wideband and tunable rejection of all LO harmonics. The key performances including the gain, noise figure (NF), input-referred third-order intercept point (IIP3), and harmonic rejection ratio (HRR) with respect to the amplitude and purity of the sine-LO are analyzed. In the circuit level, the SL-H... View full abstract»

• Analysis and Design of Feedforward Linearity-Improved Mixer Using Inductive Source Degeneration

Publication Year: 2014, Page(s):323 - 331
Cited by:  Papers (4)
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This paper presents a new linearity-improvement feedforward transconductance stage using inductive source-degeneration amplifiers. The proposed technique is applied to a CMOS RF mixer based on a folded-type topology. Feedforward compensation is achieved by cancelling the third-order transconductance terms between the inverter and auxiliary amplifiers. From a new theoretical analysis of the nonline... View full abstract»

• Investigation of Sub-Milliwatt Current-Reuse VCOs With Mono-Spontaneous Transconductance Match Technique

Publication Year: 2014, Page(s):332 - 340
Cited by:  Papers (2)
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In this paper, we investigate amplitude compensation techniques of current-reuse (CR) voltage-controlled oscillators (VCOs) and propose an innovative mono-spontaneous transconductance match (m-STM) compensation technique. Due to the asymmetrical structure of CR VCOs, the imbalance between two differential oscillating amplitudes is inevitable. The proposed m-STM technique is able to overcome the un... View full abstract»

• Improved Envelope Injection and Termination (EIT) RF Power Amplifier With Envelope Equalization for Mobile Terminal Applications

Publication Year: 2014, Page(s):341 - 351
Cited by:  Papers (2)
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An improved envelope equalization technique to enhance the efficiency of envelope injection and termination RF power amplifiers (PAs) is proposed. A TriQuint heterostructure field-effect transistor PA, which draws 100 mA from an 8.0-V supply and provides maximum power of 28 dBm for a continuous-wave input at 1.95 GHz, exhibits a significant improvement in the maximum linearity compliant efficiency... View full abstract»

• Broadband Measurements of $S$-Parameters With the Use of a Single 8 $times$ 8 Butler Matrix

Publication Year: 2014, Page(s):352 - 360
Cited by:  Papers (8)
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A novel application of an 8 × 8 Butler matrix in broadband multiport measuring systems has been presented. The proposed measuring system consists solely of a single broadband 8 × 8 Butler matrix and only one isolator allowing for measurements of all S-matrix coefficients of any two-port device. It has been shown that the properties of the applied 8 × 8 Butler matrix allow to o... View full abstract»

• Expanding the Capabilities of General-Purpose VNAs for Frequency Translating Device Characterization Below 10 MHz

Publication Year: 2014, Page(s):361 - 367
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In this paper, the authors report on a useful technique for accurately characterizing frequency translating devices below the 10-MHz starting frequency point of general-purpose vector network analyzers (VNAs). A procedure based on a four reciprocal mixers setup is proposed here to overcome this physical boundary. The complete system setup and measurement technique is explained in detail and precis... View full abstract»

• Extending the Frequency Range of Digital Noise Measurements to the Microwave Domain

Publication Year: 2014, Page(s):368 - 372
Cited by:  Papers (1)
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We describe the use of digital phase noise test sets at frequencies well beyond the sampling rate of their analog-to-digital converters. The technique proposed involves the transfer of phase fluctuations from an arbitrary high carrier frequency to within the operating frequency range of the digital instrument. The validity of the proposed technique has been proven via comparison with conventional ... View full abstract»

• Carrier Frequency Independent RF Photonic QPSK Modulator

Publication Year: 2014, Page(s):373 - 379
Cited by:  Papers (1)
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An RF photonic quadrature phase-shift keying (QPSK) modulator is conceived and demonstrated practically. The modulator has the ability to operate with any RF carrier frequency within an ultra-broad frequency range. This is achieved via utilization of a broadband Hilbert transformer. The transformer enables wideband 90 ° phase shifts required for QPSK to be realized. The carrier f... View full abstract»

• Microwave Photonic Filter With Two Independently Tunable Passbands Using a Phase Modulator and an Equivalent Phase-Shifted Fiber Bragg Grating

Publication Year: 2014, Page(s):380 - 387
Cited by:  Papers (12)
| | PDF (848 KB) | HTML

A dual-passband microwave photonic filter (MPF) implemented based on phase-modulation to intensity-modulation (PM-IM) conversion using a phase modulator and an equivalent phase-shifted fiber Bragg grating (EPS-FBG) is proposed and experimentally demonstrated. The key component in the system is the EPS-FBG, which is designed and fabricated based on the equivalent phase-shift technique. The unique f... View full abstract»

• IEEE Transactions on Microwave Theory and Techniques information for authors

Publication Year: 2014, Page(s): 388
| PDF (118 KB)
• IEEE Microwave Theory and Techniques Society Information

Publication Year: 2014, Page(s): C3
| PDF (697 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..

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