By Topic

# IEEE Microwave and Wireless Components Letters

### Early Access Articles

Early Access articles are made available in advance of the final electronic or print versions. Early Access articles are peer reviewed but may not be fully edited. They are fully citable from the moment they appear in IEEE Xplore.

## Filter Results

Displaying Results 1 - 25 of 25
• ### Design, Realization, and Evaluation of a Riemann Pump in GaN Technology

Publication Year: 2017, Page(s):1 - 3
| | PDF (871 KB)

The realization of a novel Riemann Pump for radio frequency digital-to-analog converters (RF DACs) in combination with a power amplifier is presented, which improves the signal-to-noise ratio of conventional converter concepts. The presented concept results in an arbitrary waveform generator that at the same time is capable to provide several watts of output power at RF-frequencies to 50 Ω.... View full abstract»

• ### Compact Wideband LNA With Gain and Input Matching Bandwidth Extensions by Transformer

Publication Year: 2017, Page(s):1 - 3
| | PDF (1006 KB)

This letter presents a compact wideband low-noise amplifier (LNA) with utilizing the transformers for gain and input matching bandwidth extensions based on the source degeneration topology. The wideband gain response is achieved by using a transformer gate-drain feedback technique to peak the gain at high frequency while the wideband input matching is obtained by employing a new transformer-based ... View full abstract»

• ### A 220-275 GHz Direct-Conversion Receiver in 130-nm SiGe:C BiCMOS Technology

Publication Year: 2017, Page(s):1 - 3
| | PDF (2006 KB)

This letter presents a wideband 240-GHz direct-conversion receiver manufactured in a 130-nm SiGe:C BiCMOS technology with fT/fmax=300/500 GHz. A mixer-first receiver is implemented, with a new dc offset cancellation loop architecture to compensate for the mixer dc offsets and biasing purposes. A transimpedance amplifier is utilized as a load for the mixer, optimized with the dc offset cancellation... View full abstract»

• ### Miniaturized Quarter-Mode Substrate Integrated Cavity Resonators for Humidity Sensing

Publication Year: 2017, Page(s):1 - 3
| | PDF (774 KB)

This letter presents the substantial miniaturization of substrate integrated waveguide sensors using quarter-mode and ridged quarter-mode techniques, for detecting changes in relative humidity levels between 0%-80%. Miniaturizations of 73.3% and 86.2% are reported with resonant frequencies of 6 GHz and 6.9 GHz for the two techniques, respectively. Furthermore, an increa... View full abstract»

• ### Dual-Mode Filtering Power Divider With High Passband Selectivity and Wide Upper Stopband

Publication Year: 2017, Page(s):1 - 3
| | PDF (744 KB)

A novel microstrip dual-mode filtering power divider (FPD) is presented in this letter. Stemming from the distinctive voltage distribution along an open-ended one-wavelength (λ ) microstrip line, the dual-mode FPD is initially constructed by utilizing proper coupling topologies between the open-ended transmission line and two dual-mode resonators. Meanwhile, its good isolation performance i... View full abstract»

• ### A Collocated 3-D HIE-FDTD Scheme With PML

Publication Year: 2017, Page(s):1 - 3
| | PDF (390 KB)

This letter proposes a novel hybrid implicit-explicit finite-difference time-domain method with collocation in the direction of implicitization. In this direction, the method features increased accuracy, the reason being twofold: 1) the applied combination of interpolations and differentiations preserves second-order accuracy upon nonuniform discretization and 2) material boundaries are more accur... View full abstract»

• ### Compact Wideband Bandpass Filter for TETRA Band Applications

Publication Year: 2017, Page(s):1 - 3
| | PDF (926 KB)

This letter proposes a compact wideband bandpass filter using Short Circuited line Loaded Triangular Stub Resonator (SCLTR). The SCLTR makes the filter compact and simultaneously shifts the harmonics to higher frequencies. Six transmission poles generated by six resonators provide wide passband bandwidth and three Transmission Zeros (TZs) escalate the selectivity of the bandpass filter response. T... View full abstract»

• ### Band-Selectively Tunable Electromagnetic Bandgap Structures With Open-Circuit Lines and Variable Capacitors

Publication Year: 2017, Page(s):1 - 3
| | PDF (890 KB)

We discuss the band-selective tuning of specific bandgaps (BGs) in an electromagnetic BG (EBG) structure. Two variable capacitors (VCs) attached to an open-circuit line(an element of the EBG structure) are selectively excited by voltage standing waves in the open-circuit line, and they can selectively tune the first and second BGs. With the change in a VC by 4.8 pF, the first BG moves from 0.55 to... View full abstract»

• ### Analysis of 220-GHz Low-Loss Quasi-Elliptic Waveguide Bandpass Filter

Publication Year: 2017, Page(s):1 - 3
| | PDF (1537 KB)

A 220-GHz low-loss and wideband waveguide bandpass filter with fourth-order quasi-elliptic response is presented and analyzed in this letter. An electric cross-coupling realized by easily manufactured capacitive iris is introduced in the classical folded quadruplet topology. The prototype fabricated by conventional computer numerical control (CNC)-metal-milling technology exhibits meaningful resul... View full abstract»

• ### Absorptive Bandstop Filter With Prescribed Negative Group Delay and Bandwidth

Publication Year: 2017, Page(s):1 - 3
| | PDF (1257 KB)

An absorptive bandstop filter is proposed and synthesized with prescribed negative group delay (NGD) and negative group delay bandwidth (NBW). It is realized with resistor-loaded coupled-line structures where the NGD can be controlled by the Q-factors of resonators. The resistor of the first section is determined for impedance matching, also providing a negative delay. A prototype is developed, fo... View full abstract»

• ### A 220-GHz Compact Equivalent Circuit Model of CMOS Transistors

Publication Year: 2017, Page(s):1 - 3
| | PDF (939 KB)

This study presents a physical-based RF equivalent circuit model for CMOS transistors. To increase the model accuracy and extend the effective frequency band, the interconnection effects between the input-output pad and the gate-drain of the transistor are described by using a second-order distributed parameter transmission line equivalent circuit network. Both the extrinsic and intrinsic paramete... View full abstract»

• ### Impact of an IR-UWB Reading Approach on Chipless RFID Tag

Publication Year: 2017, Page(s):1 - 3
| | PDF (657 KB)

An unusual configuration for chipless radio frequency identification reader based on impulse radio ultrawideband is proposed. The impact of this approach on chipless tag reading performance, compared with the frequency modulated continuous-wave technique, is studied. By reducing the inner sampling clock jitter of the proposed reader, it is possible to have resolution compared with laboratory equip... View full abstract»

• ### A Millimeter-Wave CMOS Dual-Bandpass T/R Switch With Dual-Band LC Network

Publication Year: 2017, Page(s):1 - 3
| | PDF (973 KB)

Fully integrated 24/60-GHz concurrent dual-bandpass transmit/receive (T/R) switch in 0.18-μm SiGe BiCMOS process is presented. The developed T/R switch consists of dual-band LC networks and resonators with shunt nMOS transistors performing the switching function. In the receiving (RX) mode, the measured insertion losses (ILs) and isolations (ISOs) are 4.5 and 16 dB at 24 GHz, and 5 and 18.3... View full abstract»

• ### Air-to-Dielectric-Filled Two-Hole Substrate-Integrated Waveguide Directional Coupler

Publication Year: 2017, Page(s):1 - 3
| | PDF (1177 KB)

A two-hole directional coupler consisting of an air-filled substrate-integrated waveguide (AFSIW) coupled to a dielectric-filled substrate-integrated waveguide (SIW) is introduced and studied for the first time. The design of the proposed two-hole coupler, based on different dielectric-loaded SIWs and on multilayer printed circuit board process, is presented in detail with its theoretical foundati... View full abstract»

• ### Error-Corrected Reflection and Transmission Scattering Parameters of a Two-Port Device

Publication Year: 2017, Page(s):1 - 3
| | PDF (976 KB)

We present an error correction algorithm for extraction of reflection and transmission scattering (S-) parameters of a two-port device without resorting to a complete two-port calibration. It is shown that S-parameters of thru and nonreflecting line connections in addition to S-parameters of an unknown device (and its reversed orientation) are needed for extracting full S-parameters of the device.... View full abstract»

• ### Electrical Modeling and Analysis of Differential Dielectric-Cavity Through-Silicon via Array

Publication Year: 2017, Page(s):1 - 3
| | PDF (495 KB)

The parasitic parameters and equivalent electrical model of differential dielectric-cavity through-silicon via (DDC-TSV) array on traditional low-resistivity silicon (LRSi) are proposed in this letter. TSV plugs are placed in the dielectric-cavity etched on LRSi. Each analytical formula in the model is established as the fuction of various physical geometries. The resistance-inductance-capacitance... View full abstract»

• ### Miniaturized Frequency Controllable Band-Stop Filter Using Coupled-Line Stub-Loaded Shorted SIR for Tri-Band Application

Publication Year: 2017, Page(s):1 - 3
| | PDF (1369 KB)

Based on the coupled-line stub-loaded shorted stepped-impedance resonator (CLSLSSIR), a compact microstrip tri-band band-stop filter (TB-BSF) with controllable frequencies, stopband attenuations (SAs), and sharp transition band roll-off skirts has been presented. The proposed CLSLSSIR exhibits multimode resonant behavior and is employed to achieve tri-stopband application by applying the virtual g... View full abstract»

• ### Quadband Rectifier Using Resonant Matching Networks for Enhanced Harvesting Capability

Publication Year: 2017, Page(s):1 - 3
| | PDF (1280 KB)

A multiband rectifier was designed according to multiple resonator networks by simultaneously matching the rectifier at different frequencies (1.3, 1.7, 2.4, and 3.6 GHz). The rectifier can simultaneously harvest energy from RF sources at the L-band (1-2 GHz), GSM1800, Wi-Fi bands, and long-term evolution. Through sequential application of the resonator networks during the rectifier-matching proce... View full abstract»

• ### A 0.71-pJ/b ON-OFF Keying $K$-Band Oscillator Using an InP-Based Resonant Tunneling Diode

Publication Year: 2017, Page(s):1 - 3
| | PDF (804 KB)

This letter presents the high-data rate performance of a 7-Gb/s resonant tunneling diode (RTD)-based on-off keying (OOK) oscillator core with a heterojunction bipolar transistor (HBT) switch design. It is found that the integrated HBT switch improves the data rate of the RTD OOK oscillator IC by minimizing the RC delay time in the previous direct driving oscillator design. The fabricated OOK oscil... View full abstract»

• ### Design of a Compact UWB Filter With High Selectivity and Superwide Stopband

Publication Year: 2017, Page(s):1 - 3
| | PDF (697 KB)

This letter presents a design of compact ultra-wideband bandpass filter (BPF) with high selectivity and superwide stopband. Three resonant modes from the multiple-mode resonator (MMR) based on half-mode substrate integrated waveguide (HMSIW) structure and four resonant modes from a pair of electromagnetic bandgap loaded parallel-coupled lines can constitute a wideband performance. Superwide stopba... View full abstract»

• ### Two-Layered Substrate Integrated Waveguide Filter for UWB Applications

Publication Year: 2017, Page(s):1 - 3
| | PDF (1029 KB)

In this letter, an ultra-wideband (UWB) substrate integrated waveguide (SIW) filter using ridge resonator is presented. The filter relies on designing SIW ridge resonator. The comb-shaped resonator makes the filter to be realizable for UWB characteristics. The upper edge of the passband can easily be adjusted by the width of small rod in the ridge resonator. A parametric study is done to show how ... View full abstract»

• ### A Compact Balanced-to-Balanced Filtering Gysel Power Divider Using \$λg/2 Resonators and Short-Stub-Loaded Resonator

Publication Year: 2017, Page(s):1 - 3
| | PDF (803 KB)

In this letter, a compact balanced-to-balanced filtering power divider (FPD) is presented. It is composed of three half-wavelength resonators and a short-stub-loaded resonator (SSLR). Due to the intrinsic resonance characteristic of the half-wavelength resonator, the bandpass response and power dividing function for differential-mode signal are realized and the suppression for common-mode signal i... View full abstract»

• ### An Alternate Circuit for Narrow-Bandpass Elliptic Microstrip Filter Design

Publication Year: 2017, Page(s):1 - 3
| | PDF (551 KB)

This letter demonstrates the dual transmission zeros (TZs) of bandpass elliptic prototype filters that can be directly implemented with two resonators in microstrip. An experimental filter based on the proposed alternate circuits is designed and fabricated. In order to improve the rejection of stopband, two additional TZs are introduced to the proposed filter. By means of directly implementing an ... View full abstract»

• ### A Low-Loss Compact 60-GHz Phase Shifter in 65-nm CMOS

Publication Year: 2017, Page(s):1 - 3
| | PDF (946 KB)

This paper presents a 60-GHz low-loss compact 4-b phase shifter in a 65-nm CMOS. It is based on a 1-b high-pass/low-pass structure and a 3-b switched-filter structure, and employs fully custom-designed capacitors with a high quality factor for low insertion loss. The phase shifter with custom-designed capacitors reduces an insertion loss by 2.6 dB at 60 GHz. The average insertion loss is 8.1 dB at... View full abstract»

• ### A Compact 0.9-/2.6-GHz Dual-Band RF Energy Harvester Using SiP Technique

Publication Year: 2017, Page(s):1 - 3
| | PDF (798 KB)

A compact dual-band radio frequency (RF) energy harvester (EH) composed of matching networks, bandpass and band-stop filters (BPF/BSF), and rectifiers, using a system-in-package technique is proposed in this letter. The matching networks and BPF/BSF are realized on a low-loss integrated-passive-device (IPD) carrier while the rectifiers are implemented in a 0.18-μm CMOS technology. The CMOS ... View full abstract»

## 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