# 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 47
• ### Dispersion Analysis of 2-D Glide-Symmetric Corrugated Metasurfaces Using Mode-Matching Technique

Publication Year: 2017, Page(s):1 - 3
| | PDF (900 KB)

In this letter, wave propagation in 2-D doubled corrugated metasurfaces, including glide-symmetric corrugated metasurfaces, embedded in a thin parallel plate waveguide have been analyzed using the mode matching method. The general dispersion equation for propagation at different directions is derived and dispersion surfaces have been obtained for three different cases. The results are in good agre... View full abstract»

• ### An $E$-Band Analog Predistorter and Power Amplifier MMIC Chipset

Publication Year: 2017, Page(s):1 - 3
| | PDF (729 KB)

An analog predistorter and power amplifier (PA) MMIC chipset has been designed to improve the overall linearity for applications in wireless communication at the E-band. The circuits have been implemented in a commercial 0.1 μm InGaAs pHEMT process. The PA delivers an output referred 1-dB gain compression (OP1 dB) of 24 dBm, saturated output power of 27 dBm, and OIP3 of 32 dBm between 71 an... View full abstract»

• ### Frequency-Polarization-Diverse Aperture for Coincidence Imaging

Publication Year: 2017, Page(s):1 - 3
| | PDF (561 KB)

A wideband frequency-polarization-diverse reflection aperture (WFPRA) for coincidence imaging is proposed in this letter. The reflection aperture is composed of polarization sensitive metamaterial cells with different resonant frequencies and different rotation directions. The cross-polarization information can also be used to generate test modes (uncorrelated spatial gain distributions) based on ... View full abstract»

• ### 2.4 GHz Class-F⁻¹ GaN Doherty Amplifier With Efficiency Enhancement Technique

Publication Year: 2017, Page(s):1 - 3
| | PDF (1519 KB)

An enhancement in the efficiency of an inverse Class F (Class F⁻¹) Doherty power amplifier (DPA) using a proposed triple-level supply modulator (SM) is presented. A three-level SM provides a lower supply voltage at a low input voltage, while providing the maximum level beyond the power back off. By adjusting the supply voltage in terms of the magnitude of the input signal, the effici... View full abstract»

• ### Compact Antenna Module With Optimized Tx-to-Rx Isolation for Monostatic RFID

Publication Year: 2017, Page(s):1 - 3
| | PDF (1387 KB)

In this letter, a compact monostatic antenna module with Tx-to-Rx isolation optimized by on-board reconfigurable leakage canceller and balanced antenna structure is presented. The self-interference of monostatic structure is managed by a directional coupler with impedance mismatch (Γ) reflector integrated into the antenna module with small area occupation. Also, quadruple inverted-F antenna... View full abstract»

• ### A Low-Loss Self-Packaged Magic-T With Compact Size Using SISL Technology

Publication Year: 2017, Page(s):1 - 3
| | PDF (1109 KB)

This letter proposes a low-loss self-packaged magic-T with compact size using substrate integrated suspended line (SISL) technology. The microstrip-slot transition is embedded inside the SISL multilayer structure and thus the radiation loss caused by the slot can be reduced to minimum. The measured results, which agree well with the simulation ones, show that from 5 to 9 GHz, i.e., 57% frac... View full abstract»

• ### Efficient Millimeter Wave Doherty PA Design Based on a Low-Loss Combiner Synthesis Technique

Publication Year: 2017, Page(s):1 - 3
| | PDF (810 KB)

We report on a record-efficient 30-GHz 21-dBm differential Doherty PA designed in a 130-nm SiGe process. The output network is designed using a recently developed combiner synthesis technique. This technique enables impedance inversion and parasitic compensation to be integrated in one compact network. As a result, the combiner loss is reduced with 0.3-0.5 dB compared with a conventional Doherty c... View full abstract»

• ### Novel Low-Loss Millimeter-Wave Transition From Waveguide-to-Microstrip Line Suitable for MMIC Integration and Packaging

Publication Year: 2017, Page(s):1 - 3
| | PDF (1003 KB)

This letter presents a unique low-loss transition from microstrip to full height rectangular waveguide at W-band. This microstrip transition can be made as a part of the mm-wave monolithic microwave integrated circuit (MMIC) of arbitrary size, and thus, avoid the use of bond wires at the high-frequency port of the MMIC circuit. As a result, the MMIC can be coupled directly to the waveguide. The wo... View full abstract»

• ### Nafion-Based Fully Passive Solid-State Conductive Bridging RF Switch

Publication Year: 2017, Page(s):1 - 3
| | PDF (1130 KB)

This letter reports the design and development of a conductive bridging RF switch with simple fabrication steps without the use of any clean room technologies. The reported device is a fully passive shunt mode RF switch on a co-planar waveguide transmission line, which operates in the dc-3GHz range. This particular topology is chosen in contemplation to limitations imposed by the chosen realizatio... View full abstract»

• ### Size-Reduced Planar and Nonplanar SIW Gysel Power Divider Based on Low Temperature Co-fired Ceramic Technology

Publication Year: 2017, Page(s):1 - 3
| | PDF (1247 KB)

Aiming at reducing the size of substrate integrated waveguide (SIW) Gysel power divider (PD), a SIW-based planar Gysel PD is redesigned based on low temperature co-fired ceramic (LTCC). In addition, another novel SIW-based nonplanar Gysel PD is first presented and implemented on multilayer LTCC, which can further reduce size over 83% when compared with planar Gysel PD. Both of the two SIW G... View full abstract»

• ### A Simple Method of Designing High-Efficiency Second-Harmonic-Tuned Power Amplifier

Publication Year: 2017, Page(s):1 - 3
| | PDF (1032 KB)

This letter presents a simple method to realize high-efficiency second-harmonic-tuned (2HT) power amplifier (PA). Compared with other works, this method can realize optimum fundamental and second-harmonic impedance matching accurately, thus to achieve a relatively high efficiency through only controlling the first two frequencies. Besides, to avoid the problem of transmission line with high charac... View full abstract»

• ### A 190-GHz High-Gain, 3-dBm OP1dB Low DC-Power Amplifier in 250-nm InP HBT

Publication Year: 2017, Page(s):1 - 3
| | PDF (1062 KB)

We report a 190-GHz amplifier designed into a 250-nm InP HBT technology. The four-stage amplifier at 76-mW dc power Pdc demonstrates 25-dB S₂₁ gain and 24-GHz 3-dB bandwidth. At 190-GHz operation, the saturated output power Psat is 9.7-mW with 9.4% PAE and 16.4-dB large-signal gain. The 1-dB gain compression power OP1db is 3-dBm. Biased at 97-mW Pdc using higher HBT collector ... View full abstract»

• ### 1.29-W/mm² 23-dBm 66-GHz Power Amplifier in 55-nm SiGe BiCMOS With In-Line Coplanar Transformer Power Splitters and Combiner

Publication Year: 2017, Page(s):1 - 3
| | PDF (855 KB)

This letter presents a four-way parallel-series power amplifier (PA) in 55-nm SiGe BiCMOS with in-line coplanar transformers for output power combining, and input/interstage power splitting. The in-line geometry allows an area efficient impedance matching design and an effective input signals routing to the individual PA stages without phase mismatch. The measurements show that the PA delivers a m... View full abstract»

• ### CMOS Cross-Coupled Oscillator Operating Close to the Transistor's fmax

Publication Year: 2017, Page(s):1 - 3
| | PDF (1098 KB)

A design methodology of CMOS cross-coupled oscillator operating close to the transistor's maximum oscillation frequency (fmax) is proposed by utilizing the loop impedance matching and phase shift control technique to maximize the oscillator's loop gain. A fundamental oscillator following the proposed design methodology has been implemented in 65-nm CMOS. The measured results show that the oscillat... View full abstract»

• ### A High-Power Orthogonal Over-Mode Circular Waveguide TE₁₁-TM₀₁ Mode Converter

Publication Year: 2017, Page(s):1 - 3
| | PDF (874 KB)

A novel high-power orthogonal over-mode circular waveguide (CWG) TE₁₁-TM₀₁ mode converter is presented. This mode converter is made up by two orthogonal CWGs and two metal plates. One metal plate is used to achieve phase shift of two semicircular waveguide TE₁₁ modes. In the bend, phase difference between the two TE₁₁ modes is changed from &#... View full abstract»

• ### 4-20 GHz GaAs True-Time Delay Amplifier MMIC

Publication Year: 2017, Page(s):1 - 3
| | PDF (1266 KB)

A wideband amplifier with a fine control of the true-time delay (TTD) has been successfully implemented using a commercial 0.5-μm GaAs pHEMT monolithic microwave integrated circuit (MMIC) process. The proposed circuit effectively combines switching elements into an artificial transmission line structure in a distributed amplifier to achieve an adjustable TTD which enables time delay control... View full abstract»

• ### A D-Band Low-Power Gain-Boosted Up-Conversion Mixer With Low LO Power in 40-nm CMOS Technology

Publication Year: 2017, Page(s):1 - 3
| | PDF (1305 KB)

This letter presents a D-band low-power gain-boosted up-conversion mixer using the 40-nm complementary metal-oxide-semiconductor technology. The proposed up-conversion mixer adopted gain-boost technique to improve conversion gain with a low local oscillator (LO) power. The resistive-feedback inverter was employed for wideband matching at intermediate-frequency ports. Broadband Marchand baluns were... View full abstract»

• ### Reducing the Attenuation in CFRP Waveguide Using Carbon Fiber Veil

Publication Year: 2017, Page(s):1 - 3
| | PDF (512 KB)

Carbon fiber reinforced polymer (CFRP) materials are anisotropic lossy conductors which restrict their use in high-performance lightweight and load-bearing waveguides. The attenuation of CFRP waveguides has been improved in this research by investigating and comparing three different manufacturing techniques. WR-90 waveguides have been manufactured from Cytec IM7/977-3 prepreg and their transmissi... View full abstract»

• ### An Efficient Estimation of Power Supply-Induced Jitter by Numerical Method

Publication Year: 2017, Page(s):1 - 3
| | PDF (919 KB)

This letter presents an efficient and generic methodology for the estimation of power supply-induced jitter by the numerical method using a root-finding approach. The methodology is described in detail through an example of a voltage-mode driver circuit. There is a significant speed-up reported compared with the simulations by a commercial simulator. View full abstract»

• ### Silicon Taper Based D-Band Chip to Waveguide Interconnect for Millimeter-Wave Systems

Publication Year: 2017, Page(s):1 - 3
| | PDF (950 KB)

This letter presents a novel interconnect for coupling millimeter-wave (mmW) signals from integrated circuits to air-filled waveguides. The proposed solution is realized through a slot antenna implemented in embedded wafer level ball grid array (eWLB) process. The antenna radiates into a high-resistivity (HR) silicon taper perpendicular to its plane, which in turn radiates into an air-filled waveg... View full abstract»

• ### A K-Band High-Efficiency VCO Using Current Reused Technique

Publication Year: 2017, Page(s):1 - 3
| | PDF (1003 KB)

In this letter, we present a high-efficiency CMOS voltage control oscillator (VCO) at K-Band. In order to achieve high efficiency, we adopt center-tapped transformer and current reused technique to integrate cross couple pair and buffer amplifier. In addition, we put buffer amplifier gate bias at class AB to enhance efficiency. VCO tuning range is from 22.35 to 25.31 GHz. Across the VCO frequency ... View full abstract»

• ### Ultrafast Backscatter Modulator With Low-Power Consumption and Wireless Power Transmission Capabilities

Publication Year: 2017, Page(s):1 - 3
| | PDF (1018 KB)

The rapid increase in the progress and development of wireless communications and identification has led to the increase of billions of devices applied in the Internet of Things (IoT) context. Low-power wireless sensors, passive-backscatter radios such as passive radio frequency identifications (RFIDs), RFID-enabled sensors, and passive wireless sensors are seen as key-enabling technologies to rea... View full abstract»

• ### Compact Coaxial Filters for BTS Applications

Publication Year: 2017, Page(s):1 - 3
| | PDF (1385 KB)

A new class of coaxial cavity filters with low-profile suitable for base transceiver station applications is proposed. The benefits of the technology are volume reduction, high performance, and superior spurious-free response. An equivalent lumped element circuit allows for a fast and efficient initial design of the resonators. Full-wave optimization is required to produce the final configuration ... View full abstract»

• ### Self-Dynamic and Static Biasing for Output Power and Efficiency Enhancement of Complementary Antiparallel Diode Pair Frequency Tripler

Publication Year: 2017, Page(s):1 - 3
| | PDF (893 KB)

A 157-GHz complementary antiparallel diode pair (CAPDP) frequency tripler using a combination of self-dynamic and static dc biasing to enhance output power and conversion efficiency is demonstrated in 130-nm complementary metal-oxide-semiconductor. The self-dynamic biasing expands the off-zone of CAPDP to reduce the output power roll-off at high input levels. A negative static dc bias tunes the of... View full abstract»

• ### Dual-Wideband Filtering Power Divider With Good Isolation and High Selectivity

Publication Year: 2017, Page(s):1 - 3
| | PDF (838 KB)

A new microstrip dual-wideband filtering power divider (FPD) is presented in this letter. The proposed device is mainly composed of a resonator loaded quarter-wavelength ($λ$/4) three-line coupled structure and a modified isolation network. To illustrate the design principle of the proposed FPD, equivalent circuits of the structure under the even-/odd-mode excitations are provided with the... 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