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# IEEE Microwave and Wireless Components Letters

## Filter Results

Displaying Results 1 - 23 of 23

Publication Year: 2010, Page(s):C1 - C4
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• ### IEEE Microwave and Wireless Components Letters publication information

Publication Year: 2010, Page(s): C2
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• ### Mur Absorbing Boundary Condition for Three-Step 3-D LOD-FDTD Method

Publication Year: 2010, Page(s):589 - 591
Cited by:  Papers (5)
| | PDF (258 KB) | HTML

A consistent implementation of Mur first-order absorbing boundary condition (ABC) for three-step 3-D locally 1-D finite-difference time- domain (LOD-FDTD) method is presented. Numerical examples are included to validate the proposed scheme in comparison with Mur ABC for the standard FDTD and two other Mur ABC schemes for the LOD-FDTD. The numerical results illustrate that the proposed scheme can a... View full abstract»

• ### Submillimeter-Wave 90 $^{circ}$ Polarization Twists for Integrated Waveguide Circuits

Publication Year: 2010, Page(s):592 - 594
Cited by:  Papers (5)  |  Patents (1)
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We present a novel full-waveguide-band 90° polarization twist implemented in full-height rectangular waveguide suitable for use in submillimeter-wave and terahertz-integrated waveguide circuits. Combined benefits of simplified fabrication, suitability for silicon micromachining, suitability for integration with other components into integrated waveguide circuits without interconnecting flan... View full abstract»

• ### A Compact Design of High-Power Spurious-Free Low-Pass Waveguide Filter

Publication Year: 2010, Page(s):595 - 597
Cited by:  Papers (17)
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In this letter, a new technique is proposed for the design of a compact high-power low-pass rectangular waveguide filter with a wide spurious-free frequency behavior. Specifically, the new filter is intended for the suppression of the fundamental mode over a wide band in much higher power applications than the classical corrugated filter with the same frequency specifications. Moreover, the filter... View full abstract»

• ### Helical Resonator Filters With Improved Power Handling Capabilities for Space Applications

Publication Year: 2010, Page(s):598 - 600
Cited by:  Papers (3)
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The power-handling capabilities of helical resonator filters for space applications are discussed. Emerging difficulties due to the multipaction effects are highlighted. A method is proposed to increase specified power handling without significantly sacrificing the size/quality factor. Experimental verification is attained by means of a fabricated prototype for which measured filter response and m... View full abstract»

• ### Compact Elliptic-Function Coplanar Waveguide Low-Pass Filters Using Backside Metallic Patterns

Publication Year: 2010, Page(s):601 - 603
Cited by:  Papers (11)
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In this letter, compact elliptic-function low-pass filters (LPF) implemented in coplanar waveguide technology by etching stepped impedance resonators (SIR) in the back substrate side, are presented. The required transmission zeros of the elliptic-function response are provided by the shunt connected SIRs. As an illustrative example, an order-3 prototype LPF with 1 GHz cutoff frequency is designed ... View full abstract»

• ### Design of Wide-Band Pseudo-Elliptic Waveguide Filters With Cavity-Backed Inverters

Publication Year: 2010, Page(s):604 - 606
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This letter presents a method for the design of wide-band pseudo-elliptic waveguide filters without resorting to global full-wave optimization. In this approach, we introduce and employ two novel cavity-backed inverters, which produce transmission zeros in the out-of-band response, however, whose frequency response in the passband is similar to that of normal iris inverters. As a design example, a... View full abstract»

• ### Compact Wideband Microstrip Bandpass Filter Using Quasi-Spiral Loaded Multiple-Mode Resonator

Publication Year: 2010, Page(s):607 - 609
Cited by:  Papers (24)
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In this letter, a new model for further reducing the size and increasing the bandwidth (BW) of a class of bandpass filter (BPF) utilizing multi-mode resonator is presented. A new technique based on spiral transmission line loading to achieve higher BW and further size reduction is analyzed for this class of BPF. A compact ultra wideband microstrip BPF is proposed by using this technique. The capab... View full abstract»

• ### Novel Dual-Band Microwave Filter Using Dual-Capacitively-Loaded Cavity Resonators

Publication Year: 2010, Page(s):610 - 612
Cited by:  Papers (11)
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We present a novel design concept for low-loss dual-band cavity filters based on dual-capacitively-loaded (DCL) cavity resonators. The relatively independent control over the center frequencies, inter-resonator and external coupling coefficients makes the DCL resonator an ideal building block for dual-band filters with widely separated passbands. The high unloaded quality factor (Qu) of... View full abstract»

• ### Dual-Mode Dual-Band Bandpass Filter Using Balun Structure for Single Substrate Configuration

Publication Year: 2010, Page(s):613 - 615
Cited by:  Papers (27)
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A novel dual-mode dual-band bandpass filter (BPF) for a single substrate configuration is proposed that uses a balun structure. The outer and inner loop resonators are simultaneously excited by the microstrip line and slotline balun structure. In spite of the microstrip feed network, the proposed dual-mode BPF can achieve dual-band operation. Two proper degenerate modes in the lower and upper pass... View full abstract»

• ### Dual-Band Bandpass Filter With Controllable Bandwidths Using Two Coupling Paths

Publication Year: 2010, Page(s):616 - 618
Cited by:  Papers (33)
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This letter presents the designs of dual-band bandpass filters using two coupling paths to control the bandwidth of each passband. One coupling path only delivers signals at the upper passband frequency whereas the other one couple signals at both passbands. Utilizing this method, the two bandwidths can be adjusted. The filters make use of stub-loaded resonators and it is convenient to tune the pa... View full abstract»

• ### A High-Power and Highly Linear CMOS Switched Capacitor

Publication Year: 2010, Page(s):619 - 621
Cited by:  Papers (11)
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A new CMOS switched capacitor is developed to be used for high-power applications such as a power amplifier, where high voltage handling capability and low distortion are two major factors. In order to demonstrate superior performance of the proposed structure over a conventional structure, two designs are analyzed and compared while maintaining comparable small signal characteristics such as a 2:... View full abstract»

• ### Noise Figure Formulas of RF MOSFETs in the Presence of Digital Substrate Noise

Publication Year: 2010, Page(s):622 - 624
Cited by:  Papers (1)
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Noise figure (NF) formulas are presented for RF MOSFETs in the presence of digital substrate noise. When the digital substrate noise is much higher than the intrinsic MOSFET noise, simplified NF formulas can be obtained. For the case of which the digital substrate noise is comparable to the MOSFET thermal noise in magnitude, general NF expressions of RF MOSFETs with digital substrate noise are der... View full abstract»

• ### A 1.1 THz Gain-Bandwidth $W$-Band Amplifier in a 0.12 $mu {rm m}$ Silicon Germanium BiCMOS Process

Publication Year: 2010, Page(s):625 - 627
Cited by:  Papers (1)
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A W-band, cascaded constructive wave amplifier realizes high gain and bandwidth in a 0.12 μm SiGe BiCMOS process. The amplifier achieves 37.5 dB gain at 90 GHz with a 3 dB bandwidth of 14.6 GHz. Consequently, this amplifier demonstrates a gain-bandwidth product as high as 1,095 GHz. At nominal bias condition, input and output return losses are better than 11 dB over the entire 3 dB bandwidt... View full abstract»

• ### A 60 GHz Wideband Phased-Array LNA With Short-Stub Passive Vector Generator

Publication Year: 2010, Page(s):628 - 630
Cited by:  Papers (20)
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This letter presents 60 GHz 5 b phased-array low noise amplifier (LNA) implemented in 90 nm CMOS for a short range wireless application. The design consists of common source two-stage LNA, short-stub vector generator, I/Q modulator with 5 b digital to analog converter and differential to single amplifier. All the proposed amplifiers are designed using a transformer coupled method which results in ... View full abstract»

• ### A Low-Power, $W$-Band Phase Shifter in a 0.12 $mu{rm m}$ SiGe BiCMOS Process

Publication Year: 2010, Page(s):631 - 633
Cited by:  Papers (5)
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This letter presents a loss-compensated, varactor-loaded transmission line for a W-band analog phase shifter in a 0.12 μm SiGe BiCMOS process. To compensate for distributed varactor losses, a variable gain amplifier is distributed along the transmission line. A phase shift of 65° over eight stages (8° per stage) is introduced from 70-110 GHz. A maximum gain of 16.7 dB or (2.1 ... View full abstract»

• ### Ultra-Low-Power Series-Feedback Frequency Divider Using 0.15-$mu{rm m}$ GaAs pHEMT's at W-Band

Publication Year: 2010, Page(s):634 - 636
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A frequency divider with a very low dc power consumption of 3 mW is demonstrated using 0.15 μm GaAs pHEMT technology at W-band. The frequency divider is based on an injection lock topology using a cascode field effect transistor (FET) structure. For low-power operation, the oscillator is configured in series-feedback topology using the upper FET as a gain cell and the lower FET as a capacit... View full abstract»

• ### A 29 dBm 70.7% PAE Injection-Locked CMOS Power Amplifier for PWM Digitized Polar Transmitter

Publication Year: 2010, Page(s):637 - 639
Cited by:  Papers (8)  |  Patents (2)
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This letter presents an injection-locked CMOS power amplifier for pulse width modulation (PWM) digitized polar transmitter. A power oscillator combined with injection-locking technique reduces the required driving power and provide high drain efficiency in the power stage. The switched power oscillator is proposed for PWM digitized polar transmitter. To achieve differential to single output and im... View full abstract»

• ### Design of Low-Cost Chipless System Using Printable Chipless Tag With Electromagnetic Code

Publication Year: 2010, Page(s):640 - 642
Cited by:  Papers (36)
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In this letter, a printable chipless tag with electromagnetic code using split ring resonators is proposed. A 4 b chipless tag that can be applied to paper/plastic-based items such as ID cards, tickets, banknotes and security documents is designed. The chipless tag generates distinct electromagnetic characteristics by various combinations of a split ring resonator. Furthermore, a reader system is ... View full abstract»

Publication Year: 2010, Page(s): 643
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Publication Year: 2010, Page(s): 644
| PDF (223 KB)
• ### IEEE Microwave and Wireless Components Letters Reviewers List

Publication Year: 2010, Page(s): C3
| PDF (167 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