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# IEEE Microwave and Wireless Components Letters

## Filter Results

Displaying Results 1 - 23 of 23

Publication Year: 2013, Page(s):C1 - C4
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• ### IEEE Microwave and Wireless Components Letters publication information

Publication Year: 2013, Page(s): C2
| PDF (155 KB)
• ### A 600 GHz Asymmetrical Orthogonal Mode Transducer

Publication Year: 2013, Page(s):569 - 571
Cited by:  Papers (5)
| | PDF (487 KB) | HTML

Development of dual-polarization sensitive receivers offers significant advantages for future terahertz radiometers. The key to any such system is the orthogonal mode transducer (OMT) which separates two superimposed modes into two single-mode waveguides. This letter presents the design, fabrication and measurement of a split-block asymmetrical OMT operating from 500 to 600 GHz. View full abstract»

• ### A W-Band Low-Loss and Wideband LTCC Transition From Waveguide to Microstrip

Publication Year: 2013, Page(s):572 - 574
Cited by:  Papers (5)
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A broadband transition structure from rectangular waveguide (RWG) to microstrip line (MSL) is presented for the realization of the low-loss packaging module using Low-temperature co-fired ceramic (LTCC) technology at W-band. In this transition, a cavity structure is buried in LTCC layers, which provides the wide bandwidth, and a laminated waveguide (LWG) transition is designed, which provides the ... View full abstract»

• ### Ka-Band Rectangular Waveguide to Suspended Stripline Transition

Publication Year: 2013, Page(s):575 - 577
Cited by:  Papers (3)
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A Ka-band transition between a rectangular waveguide and a suspended stripline (SSL) is proposed. It uses a configuration in which the SSL substrate is perpendicular to the waveguide main axis. A patch printed on the SSL substrate is used to match the characteristic impedance of the waveguide. A set of formulas to facilitate the design of the element is presented. A prototype of the transition was... View full abstract»

• ### Novel Microstrip Fed Mechanically Tunable Combline Cavity Filter

Publication Year: 2013, Page(s):578 - 580
Cited by:  Papers (3)
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A novel configuration for mechanically tunable combline bandpass filters is proposed, where the classical resonating rod-tuning screw combination is replaced with a simple printed circuit-tuning screw combination. Moreover, because a printed circuit structure that uses metal vias forms the bottom part of the cavity, the coaxial type feeding and the coaxial to cavity matching of classical combline ... View full abstract»

• ### A Cross-Guide Waveguide Directional Coupler With High Directivity and Broad Bandwidth

Publication Year: 2013, Page(s):581 - 583
Cited by:  Papers (6)
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A cross-guide waveguide directional coupler (patent pending) with high directivity and broad bandwidth is proposed in this letter. It consists of two rectangular waveguides (called main waveguide and branch waveguide) crossing at a certain angle and sharing a common broad wall. High directivity is achieved by adding metal inserts in the branch waveguide in the coupling region near the crossed roun... View full abstract»

• ### A Compact Dual-Band Bandpass Superconducting Filter Using Microstrip/CPW Spiral Resonators

Publication Year: 2013, Page(s):584 - 586
Cited by:  Papers (3)
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A compact eight-pole dual-band bandpass filter is designed using a combination of microstrip and coplanar waveguide spiral resonators. To implement a coupling matrix with both large and small elements, four coupling paths are used to apply coupling coefficients varying from 0.001 to 0.3. The fabricated superconducting filter exhibits high performance and excellent agreement with simulations. View full abstract»

• ### A Wideband Power Amplifier in 45 nm CMOS SOI Technology for X Band Applications

Publication Year: 2013, Page(s):587 - 589
Cited by:  Papers (11)
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A fully-integrated wideband power amplifier (PA) operating in 9-15 GHz range is implemented in a standard 45 nm CMOS SOI technology. The PA is designed with three dynamically-biased stacked Cascode cells (6 stacked transistors) to overcome the low breakdown voltages of nanoscale CMOS transistors. The stacked Cascode cells ensure stable operation and facilitate high gain, and high optimum load impe... View full abstract»

• ### Divide-by-Three Injection-Locked Frequency Divider Combined With Divide-by-Two Locking

Publication Year: 2013, Page(s):590 - 592
Cited by:  Papers (6)
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A divide-by-3 direct-injection-locked frequency divider is demonstrated with an extra divide-by-2 operation by utilizing the two-fold frequency at the common-node between the drain-pumped injectors. The effective transconductance of the injectors is increased due to the existence of divide-by-two locking circuitry. The measured locking range is from 11.77 to 16.64 GHz (34.28%) with an output power... View full abstract»

• ### A Dual-Purpose Reconfigurable Negative Group Delay Circuit Based on Distributed Amplifiers

Publication Year: 2013, Page(s):593 - 595
Cited by:  Papers (9)
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In this letter, a novel reconfigurable negative group delay distributed amplifier (NGD-DA) circuit is proposed. This NGD-DA offers a new method to realize negative group delay. By properly choosing the gain coefficient of each tap for the DA, we can synthesize the negative group delay at the reverse port of the DA in the frequency band of interest, while maintaining a flat gain at the forward port... View full abstract»

• ### 24 GHz Single-Balanced Diode Mixer Exploiting Cellulose-Based Materials

Publication Year: 2013, Page(s):596 - 598
Cited by:  Papers (10)
| | PDF (419 KB) | HTML

A 24 GHz single-balanced diode mixer in paper substrate is presented. The microstrip 180 degrees hybrid junction (rat-race) is fabricated exploiting a copper adhesive tape that is shaped by a photo-lithographic process and transferred to the hosting (paper) substrate using a sacrificial layer. Only three discrete devices are necessary for the mixer operation, namely: two low-barrier, Schottky diod... View full abstract»

• ### A 300 GHz Divide-by-2 ILFD Using Frequency Boosting Technique

Publication Year: 2013, Page(s):599 - 601
Cited by:  Papers (2)
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A 300 GHz divide-by-2 ILFD is fabricated in 40 nm CMOS technology. This ILFD adopts π-type LC networks with a negative coupling technique to enhance the oscillation frequency. The oscillation frequency and the locking range of the proposed ILFD are analyzed. The measured locking range is 297.08-306.64 GHz. The ILFD consumes 9.18 mW under a standard supply of 0.9 V excluding output buffers. View full abstract»

• ### A 2–8 GHz Wideband Dually Frequency-Tuned Ring-VCO With a Scalable ${rm K} _{rm VCO}$

Publication Year: 2013, Page(s):602 - 604
Cited by:  Papers (7)
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A 2-8 GHZ wideband dual-tuned ring voltage- controlled oscillator (VCO) has been designed and fabricated in TSMC 65nm CMOS process. Using a 6-bit digital-to-analog converter (DAC) that provided the V coarse, the entire frequency range was evenly divided into 64 sub-bands. Next, the oscillation frequency was finely tuned by V fine to control the strength of the latches in the delay cell of the VCO.... View full abstract»

• ### Current Shared Cascade Structure for the Driver Stages of Switching Mode RF Power Amplifiers

Publication Year: 2013, Page(s):605 - 607
Cited by:  Papers (3)
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In this work, we propose a current shared cascade (CSC) structure for the driver stages of switching mode RF power amplifiers (PAs); this CSC is designed using a differential structure. The CSC structure is composed of a first driver stage stacked on top of a second driver stage. The first and second driver stages share a dc current and the effective supply voltages of each driver stage become app... View full abstract»

• ### A 1.6–9.7 GHz CMOS LNA Linearized by Post Distortion Technique

Publication Year: 2013, Page(s):608 - 610
Cited by:  Papers (7)
| | PDF (918 KB) | HTML

A linearized ultra-wideband (UWB) CMOS low noise amplifier (LNA) is proposed. The linearity is improved by a post distortion technique, employing PMOS as an auxiliary FET to cancel the second- and the third-order nonlinear currents of common-gate LNA. A three-section band-pass Chebyshev filter is presented for wideband input matching. The LNA implemented in a 0.18 μm CMOS technology demonst... View full abstract»

• ### A Switchless CMOS Bi-Directional Distributed Gain Amplifier With Multi-Octave Bandwidth

Publication Year: 2013, Page(s):611 - 613
Cited by:  Papers (3)
| | PDF (630 KB) | HTML

This letter proposes a wideband switchless bi-directional distributed amplifier in a commercial 0.13 μm CMOS technology, which realizes multi-octave bandwidth with high gain and low noise figure using distributed amplifier technique and cascode-amplifier pair. The measured gain is over 10 dB and measured noise figure is 3.2-6.5 dB. The input and output return losses are better than 9 dB at ... View full abstract»

• ### A Wideband Doherty Power Amplifier With 100 MHz Instantaneous Bandwidth for LTE-Advanced Applications

Publication Year: 2013, Page(s):614 - 616
Cited by:  Papers (6)
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In this letter, a 698-862 MHz wideband Doherty power amplifier (DPA) with 100 MHz instantaneous bandwidth is presented. The electrical memory effect of the wideband DPA is reduced by the LC resonant circuits employed in the drain bias networks. The influence of the integrated Doherty combiner is compensated by the broadband output matching networks, which were designed by applying the simplified r... View full abstract»

• ### Reduced Cost Amplitude Independent Photonic RF Frequency Measurement System

Publication Year: 2013, Page(s):617 - 619
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We have demonstrated that a previously developed amplitude independent photonic instantaneous frequency measurement (IFM) system can be further simplified by removing one laser source while maintaining the amplitude independent concept. This has reduced the cost of the system specifically when a bank of IFM systems is needed. Also, using high frequency Mach-Zehnder modulators, the system operation... View full abstract»

• ### Sequential Digital Predistortion for Two-stage Envelope Tracking Power Amplifier

Publication Year: 2013, Page(s):620 - 622
Cited by:  Papers (6)
| | PDF (541 KB) | HTML

To improve the efficiency of the main power amplifier, the envelope tracking technique is widely used. However, due to the reduced gain of the main amplifier by the envelope tracking, the driving power of the drive amplifier requires to be larger and the amplifier should be optimized accordingly for an efficiency operation. In this letter, a two stage envelope tracking power amplifier is studied f... View full abstract»

• ### High Resolution Microwave Frequency Measurement Using a Dual-Parallel Mach–Zehnder Modulator

Publication Year: 2013, Page(s):623 - 625
Cited by:  Papers (5)
| | PDF (621 KB) | HTML

A novel microwave frequency measurement scheme based on a dual-parallel Mach-Zehnder modulator (DPMZM) is proposed and demonstrated. By simply adjusting the bias voltage of the DPMZM, the measurement range can be divided into several parts and each part has very high resolution. Thus, the system can be used in a two-stage instantaneous frequency measurement scheme, in which the first stage coarsel... View full abstract»

• ### A Wideband Doherty Architecture With 36% of Fractional Bandwidth

Publication Year: 2013, Page(s):626 - 628
Cited by:  Papers (21)
| | PDF (637 KB) | HTML

This letter presents the design and characterization of a novel wideband Doherty architecture. Both input splitter and output combiner are realized by means of two-sections branch-line alike couplers. The realized prototype based on commercial GaN active devices shows more than 36% of fractional bandwidth, from 1.67 to 2.41 GHz. In this frequency range, the measured drain efficiency is within 59% ... View full abstract»

• ### IEEE Microwave and Wireless Components Letters Reviewers List

Publication Year: 2013, Page(s): C3
| PDF (278 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.

Full Aims & Scope

## 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