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# IEEE Transactions on Microwave Theory and Techniques

## Filter Results

Displaying Results 1 - 25 of 35

Publication Year: 2008, Page(s):C1 - C4
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• ### IEEE Transactions on Microwave Theory and Techniques publication information

Publication Year: 2008, Page(s): C2
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• ### A New Millimeter-Wave Small-Signal Modeling Approach for pHEMTs Accounting for the Output Conductance Time Delay

Publication Year: 2008, Page(s):741 - 746
Cited by:  Papers (43)
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A new technique is developed for determining analytically a millimeter-wave small-signal equivalent-circuit model of GaAs pseudomorphic HEMTs from scattering parameter measurements. In order to obtain a good agreement between model simulations and measurements up to 90 GHz, the conventional intrinsic output conductance is substituted by a voltage-controlled current source with a time delay. Conseq... View full abstract»

• ### Direct Analysis Technique for Long-Finger HBT by Electromagnetic and Device Co-Simulation

Publication Year: 2008, Page(s):747 - 754
Cited by:  Papers (3)
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This paper presents a direct-analysis technique for transistors with a long-finger structure. The analysis technique is an incorporated simulation between the finite-difference time-domain electromagnetic (EM) and semiconductor device simulations. The co-simulation method can consider various EM couplings and phase shifts on finger electrodes of transistors. The method was applied for InGaP/GaAs H... View full abstract»

• ### Scalable Nonlinear FET Model Based on a Distributed Parasitic Network Description

Publication Year: 2008, Page(s):755 - 766
Cited by:  Papers (28)
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Electron device modeling requires accurate descriptions of parasitic passive structures connecting the intrinsic electron device to the external world. In conventional approaches, the parasitic phenomena are described by a network of lumped elements. As an alternative, a distributed description can be conveniently adopted. This choice has been proven very appropriate when dealing with device scali... View full abstract»

• ### 18–40-GHz Beam-Shaping/Steering Phased Antenna Array System Using Fermi Antenna

Publication Year: 2008, Page(s):767 - 773
Cited by:  Papers (7)
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This paper concerns 18-40 GHz 1times 16 beam shaping and 1times 8 beam steering phased antenna arrays (PAAs) realized on a single low-cost printed circuit board substrate. The system consists of a wideband power divider with amplitude taper for sidelobe suppression, wideband microstrip-to-slotline transition, a low-cost true time piezoelectric transducer (PET)-controlled phase shifter, and wideban... View full abstract»

• ### Single-Layer High-Order Miniaturized-Element Frequency-Selective Surfaces

Publication Year: 2008, Page(s):774 - 781
Cited by:  Papers (84)
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A new miniaturized-element frequency-selective surface is presented in this paper. This frequency-selective surface is made up of a 2-D periodic array of metallic loop and a wire grid of the same period printed on either side of a very thin substrate. Unique features of the new design include localized frequency-selective properties, high-order frequency response achieved by a single substrate, la... View full abstract»

• ### A 1.8-GHz CMOS Power Amplifier Using a Dual-Primary Transformer With Improved Efficiency in the Low Power Region

Publication Year: 2008, Page(s):782 - 792
Cited by:  Papers (18)  |  Patents (1)
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A 1.8-GHz CMOS power amplifier for a polar transmitter is implemented with a 0.18- RF CMOS process. The matching components, including the input and output transformers, were integrated. A dual-primary transformer is proposed in order to increase the efficiency in the low power region of the amplifier. The loss induced by the matching network for the low-output power region is minimized using the ... View full abstract»

• ### Novel Miniature and Broadband Millimeter-Wave Monolithic Star Mixers

Publication Year: 2008, Page(s):793 - 802
Cited by:  Papers (27)  |  Patents (3)
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In this paper, three monolithic star mixers using a new miniature dual balun are proposed. The first one is a double spiral transformer mixer, and the second one is a trifilar transformer mixer. Both of these are fabricated using a commercial GaAs pseudomorphic HEMT process. The third is a 3-D transformer mixer, which is fabricated using a commercial CMOS process. These mixers exhibit bandwidths o... View full abstract»

• ### Microwave Modulators Based on 4H-SiC p-i-n Diodes

Publication Year: 2008, Page(s):803 - 808
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Multidiode broadband microwave signal modulators based on 4H-SiC p-i-n diodes were fabricated and fully characterized for the first time. The diodes used for the modulator fabrication exhibited a blocking voltage of 1100 V, a 100-mA differential resistance of 1-3 Omega, a punch-through voltage (100 V) capacitance below 0.5 pF, and a carrier effective lifetime of 15 ns. The three-diode modulators a... View full abstract»

• ### Analysis and Design of a Novel $times$4 Subharmonically Pumped Resistive HEMT Mixer

Publication Year: 2008, Page(s):809 - 816
Cited by:  Papers (13)  |  Patents (1)
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In this paper, a novel topology of an HEMT-based subharmonically pumped resistive mixer (SHPRM) is presented, i.e., the times4SHPRM. The presented topology requires only a quarter of the local oscillator (LO) frequency compared to a fundamentally pumped mixer (e.g., 15 instead of 60 GHz in a 60-GHz system). This reduction in required LO frequency provides a significant reduction in complexity of t... View full abstract»

• ### A Quantization Noise Pushing Technique for $DeltaSigma$ Fractional- $N$ Frequency Synthesizers

Publication Year: 2008, Page(s):817 - 825
Cited by:  Papers (11)  |  Patents (1)
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This paper demonstrates our proposed quantization noise pushing technique, which moves the quantization noise to higher frequencies and utilizes the low-pass characteristic of the phased-lock loop (PLL) to further suppress the quantization noise. In addition, it can separate the operating frequency of the DeltaSigma modulator and the comparison frequency of the phase/frequency detector (PFD) so as... View full abstract»

• ### A Model for Stability, Noise, and Angle Modulation Analysis of Injection-Locked Oscillators

Publication Year: 2008, Page(s):826 - 834
Cited by:  Papers (3)
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A model is presented for an injection-locked oscillator. It is derived from a perturbation of the free-running oscillator steady state, which is accurately determined from a harmonic balance (HB) simulation. As a first application, the proposed model is used to trace the existing solutions of the injection-locked system and their stability. It is then extended to include the effect of noise on the... View full abstract»

• ### Low-Loss and Broadband Asymmetric Broadside-Coupled Balun for Mixer Design in 0.18-$mu{hbox {m}}$ CMOS Technology

Publication Year: 2008, Page(s):835 - 848
Cited by:  Papers (38)
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This study presents an asymmetric broadside coupled balun with low-loss broadband characteristics for mixer designs. The correlation between balun impedance and a 3D multilayer CMOS structure are discussed and analyzed. Two asymmetric multilayer meander coupled lines are adopted to implement the baluns. Three balanced mixers that comprise three miniature asymmetric broadside coupled Marchand balun... View full abstract»

• ### A High-Power CMOS Switch Using A Novel Adaptive Voltage Swing Distribution Method in Multistack FETs

Publication Year: 2008, Page(s):849 - 858
Cited by:  Papers (27)  |  Patents (3)
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A high-power CMOS switch using a novel adaptive voltage swing distribution method in a multistack field-effect transistor (FET) scheme is proposed. The proposed adaptive voltage swing distribution method in multistack FETs is very effective in preventing unwanted channel formation with low control voltage supply in OFF-state FETs. This, in turn, increases power-handling capability when a large-sig... View full abstract»

• ### The Switched Injection-Locked Oscillator: A Novel Versatile Concept for Wireless Transponder and Localization Systems

Publication Year: 2008, Page(s):859 - 866
Cited by:  Papers (34)  |  Patents (1)
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In this paper, the novel principle of the switched injection-locked oscillator is introduced. It is shown that the concept is ideally suited for transponder and secondary radar systems with outstanding performance. A switched injection-locked oscillator transponder can produce an approximately phase coherent high-power response to an interrogating signal and, consequently, allows for long-range tr... View full abstract»

• ### Neural Network Inverse Modeling and Applications to Microwave Filter Design

Publication Year: 2008, Page(s):867 - 879
Cited by:  Papers (83)
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In this paper, systematic neural network modeling techniques are presented for microwave modeling and design using the concept of inverse modeling where the inputs to the inverse model are electrical parameters and outputs are geometrical parameters. Training the neural network inverse model directly may become difficult due to the nonuniqueness of the input-output relationship in the inverse mode... View full abstract»

• ### A Dyadic Green's Function Based Method for the Transient Analysis of Lossy and Dispersive Multiconductor Transmission Lines

Publication Year: 2008, Page(s):880 - 895
Cited by:  Papers (36)
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This paper describes a new algorithm for the analysis of multiconductor transmission lines characterized by frequency-dependent per-unit-length parameters. The proposed model is based on studying telegrapher's equations as a Sturm-Liouville problem. The open-end impedance matrix is expressed in a series form as an infinite sum of matrices of rational functions, derived from the series form of the ... View full abstract»

• ### A Circuit-Theoretic Approach to the Design of Quadruple-Mode Broadband Microstrip Patch Antennas

Publication Year: 2008, Page(s):896 - 900
Cited by:  Papers (10)
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A novel method for the design of broadband patch antennas is described. The approach taken is to broadside couple two dual-mode patch antennas, resulting in a quad resonance antenna. The equivalent circuit of the antenna is similar to that of microwave filters, thus filter design techniques maybe employed to synthesize the antenna to obtain maximum return-loss bandwidth. This is the first time an ... View full abstract»

• ### Zig–Zag-Array Superconducting Resonators for Relatively High-Power Applications

Publication Year: 2008, Page(s):901 - 912
Cited by:  Papers (6)
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Since power handling of superconducting resonators is severely limited by current density saturation, it is proposed to form resonators having their incident power and resulting currents divided within interior arrays of "basic resonators" (A properly designed array of basic resonators acts as a single resonator.) Though other forms of basic resonators may also be attractive, in this paper, in all... View full abstract»

• ### Novel Centrally Loaded Resonators and Their Applications to Bandpass Filters

Publication Year: 2008, Page(s):913 - 921
Cited by:  Papers (92)
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This paper presents several novel centrally loaded resonators and their applications to various types of bandpass filters. Based on the theoretical analysis, it is found that the even- mode resonance of the proposed resonators can be conveniently controlled without affecting the responses at the odd-mode resonant frequencies. Benefiting from this feature, the resonator can be utilized to design no... View full abstract»

• ### High-$Q$ Resonators and Filters Inside Advanced Low-Temperature Co-Fired Ceramic Substrates Using Fine-Scale Periodicity

Publication Year: 2008, Page(s):922 - 930
Cited by:  Papers (4)
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Effective media are shown to be created by patterning a material to overcome inherent material losses. Two different types of effective media, i.e., the windowpane and stratified media formed by fine-scale periodicity, are investigated. The effect of different perforations in the material is demonstrated. In particular, a great reduction in dielectric loss is observed in the stratified medium, mak... View full abstract»

• ### Suppression of Unwanted Harmonics Using Integrated Complementary Split-Ring Resonators in Nonlinear Transmission Line Frequency Multipliers

Publication Year: 2008, Page(s):931 - 941
Cited by:  Papers (4)
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Inspired by the distributed nature of nonlinear transmission lines (NLTLs), a novel filtering method that integrates the filter stages within the NLTL periodic structure is introduced to suppress unwanted signals. To implement the filter, compact complementary split-ring resonators are designed and included in a coplanar waveguide-based NLTL frequency doubler. Analytical derivations for the filter... View full abstract»

• ### A Wideband Scalable and SPICE-Compatible Model for On-Chip Interconnects Up to 110 GHz

Publication Year: 2008, Page(s):942 - 951
Cited by:  Papers (25)
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A fully scalable and SPICE compatible wideband model of on-chip interconnects valid up to 110 GHz is presented in this paper. The series branches of the proposed multisegment model consist of an RL ladder network to capture the skin and proximity effects, as well as the substrate skin effect. Their values are obtained from a technique based on a modified effective loop inductance approach and comp... View full abstract»

• ### Multilayer Organic Multichip Module Implementing Hybrid Microelectromechanical Systems

Publication Year: 2008, Page(s):952 - 958
Cited by:  Papers (7)  |  Patents (2)
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We present the design and development of an organic package that is compatible with fully released RF microelectromechanical systems (MEMS). The multilayer organic package consists of a liquid-crystal polymer film to provide near hermetic cavities for MEMS. The stack is further built up using organic thin-film polyimide. To demonstrate the organic package, we have designed and implemented a 2-bit ... 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..

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## Meet Our Editors

Editor-in-Chief
Luca Perregrini
luca.perregrini@unipv.it

Editor-in-Chief
Jose Carlos Pedro
edit.tmtt@ua.pt