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# IEEE Microwave and Wireless Components Letters

## Filter Results

Displaying Results 1 - 22 of 22

Publication Year: 2011, Page(s):C1 - C4
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• ### IEEE Microwave and Wireless Components Letters publication information

Publication Year: 2011, Page(s): C2
| PDF (44 KB)
• ### GPU Acceleration of Multilevel Solvers for Analysis of Microwave Components With Finite Element Method

Publication Year: 2011, Page(s):1 - 3
Cited by:  Papers (15)
| | PDF (163 KB) | HTML

The letter discusses a fast implementation of the conjugate gradient iterative method with E-field multilevel preconditioner applied to solving real symmetric and sparse systems obtained with vector finite element method. In order to accelerate computations, a graphics processing unit (GPU) was used and significant speed-up (2.61 fold) was achieved comparing to a central processing unit (CPU) base... View full abstract»

• ### A Closed-Form Formula for Dispersion Characteristics of Fundamental SIW Mode

Publication Year: 2011, Page(s):4 - 6
Cited by:  Papers (30)
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An accurate closed-form formula is derived from an analytical method to calculate dispersion properties of the substrate integrated waveguide (SIW). The derived equation which is a function of geometrical parameters is used to accurately estimate the cutoff frequency of the dominant mode at a low leakage condition. The unit cell of an SIW can be considered as two consecutive rectangular waveguide ... View full abstract»

• ### A Novel Modal Technique for Time and Frequency Domain Analysis of Waveguide Components

Publication Year: 2011, Page(s):7 - 9
Cited by:  Papers (2)
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A new modal algorithm for fast frequency or time domain simulation of waveguide components and resonators is proposed. The new algorithm is based on the finite difference frequency domain method combined with domain decomposition, model order reduction and the projection of fields at domain boundaries on a modal basis. As a result, one converts Maxwell's equations into a very compact set of linear... View full abstract»

• ### Substrate Integrated Waveguide Loaded by Complementary Split-Ring Resonators for Miniaturized Diplexer Design

Publication Year: 2011, Page(s):10 - 12
Cited by:  Papers (40)
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A novel high-performance planar diplexer is developed based on the substrate integrated waveguide (SIW) with complementary split-ring resonators (CSRRs) etched on the waveguide surface. The proposed diplexer is operated below the characteristic cutoff frequency of the waveguide. The filtering response of the SIW-CSRR combined structure is investigated first. The diplexer is then implemented based ... View full abstract»

• ### Double Ridged 180$^{circ}$ Hybrid Power Divider With Integrated Band Pass Filter

Publication Year: 2011, Page(s):13 - 15
Cited by:  Papers (4)
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We describe the design, construction and performance of a 180° hybrid power divider with integrated band pass filter for L-band (1.3-1.8 GHz). The hybrid is based on a cavity and two novel broadband coaxial-to-double ridged waveguide transitions. The design was optimized using a commercial 3-D electromagnetic simulator. The device was tested at room and cryogenic temperature. At the physica... View full abstract»

• ### Modified Gysel Power Divider for Dual-Band Applications

Publication Year: 2011, Page(s):16 - 18
Cited by:  Papers (26)  |  Patents (1)
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This letter presents a modified Gysel power divider for dual-band applications. A short-stub and an open-stub has been attached to the conventional Gysel structure. Closed-form design equations are derived. Power operation analysis shows that the new dual-band circuit maintains Gysel divider's high power handling advantage over Wilkinson divider. The measured results show that good matching, isola... View full abstract»

• ### A Novel Design for a Dual-Band Negative Group Delay Circuit

Publication Year: 2011, Page(s):19 - 21
Cited by:  Papers (9)
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In this letter, a novel design for a dual-band negative group delay circuit (NGDC) is proposed. Based on the topology of a single-band reflection type NGDC, composite right/left handed λ/4 short stubs are employed to obtain a negative group delay (NGD) at two separate frequency bands simultaneously. In order to achieve a bandwidth extension, the proposed structure consists of a two-stage du... View full abstract»

• ### Broadband Fixed Phase Shifters

Publication Year: 2011, Page(s):22 - 24
Cited by:  Papers (33)
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A method to design planar and compact phase shifters with broadband characteristics is presented. It utilizes broadside-coupled microstrip-coplanar waveguide, and thus the proposed devices can be fabricated using the simple and cheap double-side printed circuit boards. The method is used to design 60° and 90° phase shifters. The simulated and measured results show that the developed ... View full abstract»

• ### A Compact Wideband Ring Coupler Utilizing a Pair of Transitions for Phase Inversion

Publication Year: 2011, Page(s):25 - 27
Cited by:  Papers (8)
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A new wideband ring coupler utilizing a pair of ultra-wideband planar transitions is introduced in this letter. The two types of transitions (in-phase and inverted phase transitions) are coplanar waveguide-to-parallel stripline transitions, and very similarly structured except for the phase inversion part. The area of the proposed ring coupler is only 41.4% of the conventional ring coupler. The me... View full abstract»

• ### Compact UWB Bandpass Filter With Dual Notched Bands Based on SCRLH Resonator

Publication Year: 2011, Page(s):28 - 30
Cited by:  Papers (52)
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This letter presents a novel ultra-wideband (UWB) band-pass filter (BPF) with dual sharply rejected notch-bands based on a simplified composite right/left-handed (SCRLH) resonator. The basic UWB BPF is comprised of four folded shunt quarter-wavelength short-circuited stubs separated by connecting lines with length of λg0/4 and λg0/2, respectively. The SCRLH resonator is... View full abstract»

• ### A Class-F Power Amplifier With CMRC

Publication Year: 2011, Page(s):31 - 33
Cited by:  Papers (17)
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This letter presents a novel harmonic control circuit (HCC) for class-F power amplifiers (PAs). A compact microstrip resonant cell (CMRC) is inserted between the transistor and the output fundamental matching network. Third harmonic open circuit condition and size reduction are achieved simultaneously. This scheme provides a straightforward and simple approach to design HCC. A class-F PA is design... View full abstract»

• ### A 2.4 GHz Quadrature-Input Programmable Fractional Frequency Divider

Publication Year: 2011, Page(s):34 - 36
Cited by:  Papers (4)  |  Patents (1)
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A 2.4 GHz quadrature-input programmable frequency divider with step size of 0.5 is demonstrated in a standard 0.35 μm CMOS process. Fractional division is realized by phase switching between the cross-coupled divide-by-4 injection-locked frequency divider outputs. The proposed circuit exhibits an operation frequency range from 2.24 to 2.70 GHz and consumes less than 5.13 mW with a 1.5 V sup... View full abstract»

• ### Quadrature Injection-Locked Frequency Dividers Using Dual-Resonance Resonator

Publication Year: 2011, Page(s):37 - 39
Cited by:  Papers (8)
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This letter studies the property of a divide-by-2 quadrature injection-locked frequency divider (QILFD) with dual-resonance resonator. The QILFD consists of a transformer-coupled quadrature voltage controlled oscillator and two NMOS injectors. The proposed QILFD has been implemented with the TSMC 0.18 μm CMOS technology and the core power consumption is 3.4 mW at the supply voltage of 0.75 ... View full abstract»

• ### A 38/114 GHz Switched-Mode and Synchronous Lock Standing Wave Oscillator

Publication Year: 2011, Page(s):40 - 42
Cited by:  Papers (6)
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This letter presents a 38/114 GHz switched-mode standing wave oscillator (SWO) capable of synchronous locking. Triple output frequency can be excited by digital control of different mode operations. The experimental prototype was fabricated using a low leakage 65 nm 1P9M triple-well CMOS technology. Incorporating a synchronous lock scheme, the measured phase noise from a 38 GHz carrier before and ... View full abstract»

• ### 150 GHz Complementary Anti-Parallel Diode Frequency Tripler in 130 nm CMOS

Publication Year: 2011, Page(s):43 - 45
Cited by:  Papers (10)
| | PDF (513 KB) | HTML

The first complementary anti-parallel Schottky diode frequency tripler in CMOS is demonstrated. The tripler exhibits ~34-dB minimum conversion loss, -24-dBm maximum output power at 150 GHz, and 3 db output frequency range of ~10 GHz. View full abstract»

• ### Ultra-Wideband Power Divider Using Multi-Wafer Packaging Technology

Publication Year: 2011, Page(s):46 - 48
Cited by:  Papers (7)  |  Patents (2)
| | PDF (439 KB) | HTML

A compact ultra-wideband Wilkinson power combiner/divider is first demonstrated using a hermetic multi-wafer wafer level packaging technology. Its bandwidth is broadened to around 2-22 GHz with a maximum VSWR around 2:1, by using a multi-section design approach. A total of four sections are adopted to achieve better than 20 dB isolation between output ports across the majority of a 3-19 GHz band. ... View full abstract»

• ### Radiation Pattern Measurements of an Integrated Transverse Electromagnetic Horn Antenna Using a Terahertz Photomixing Setup

Publication Year: 2011, Page(s):49 - 51
Cited by:  Papers (5)
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We report experimental radiation pattern measurements of a transverse electromagnetic horn antenna at the millimetric/sub-millimetric frontier (280-350 GHz). The antenna is fed by a monolithically integrated uni-travelling-carrier photodiode illuminated by an optical beatnote (photomixing) at 1.55 μm. The detection is performed using an electronic sub-harmonic mixer and the whole characteri... View full abstract»

• ### Instantaneous Microwave Frequency Measurement Using a Special Fiber Bragg Grating

Publication Year: 2011, Page(s):52 - 54
Cited by:  Papers (19)
| | PDF (239 KB) | HTML

A photonic approach to realizing instantaneous microwave frequency measurement based on frequency to optical power ratio mapping using a special fiber Bragg grating (FBG) is proposed and demonstrated. The special FBG is designed to have a spectral response with two slopes that are inversely proportional to optical frequency, which enables the realization of a linear power ratio function, leading t... View full abstract»

Publication Year: 2011, Page(s):55 - 56
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• ### IEEE Microwave and Wireless Components Letters Reviewers List

Publication Year: 2011, Page(s): C3
| PDF (161 KB)

## Aims & Scope

The IEEE Microwave and Wireless Components Letters (MWCL) publishes three page papers that focus on microwave theory, techniques and applications as they relate to components, devices, circuits, biological effects, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals.

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## Meet Our Editors

Editor in Chief
N. Scott Barker
Dept. Elect. Comp. Eng.
University of Virginia
Charlottesville, VA 22904
barker@virginia.edu
dsk6n@virginia.edu