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# IEEE Microwave and Wireless Components Letters

## Filter Results

Displaying Results 1 - 25 of 27

Publication Year: 2014, Page(s):C1 - C4
| PDF (143 KB)
• ### IEEE Microwave and Wireless Components Letters publication information

Publication Year: 2014, Page(s): C2
| PDF (154 KB)
• ### Leapfrog Formulation of the 3-D LOD-FDTD Algorithm

Publication Year: 2014, Page(s):137 - 139
Cited by:  Papers (2)
| | PDF (640 KB) | HTML

This letter presents an efficient leapfrog formulation of the three-dimensional locally one dimensional finite-difference time-domain (3-D LOD-FDTD) method, denoted by the leapfrog LOD-FDTD method. By adopting the leapfrog scheme, the new algorithm, whose right-hand sides are much simpler and more concise than those in the original LOD-FDTD method, is implemented in the same manner as those in the... View full abstract»

• ### On-Chip GIPD Bandpass Filter Using Synthesized Stepped Impedance Resonators

Publication Year: 2014, Page(s):140 - 142
Cited by:  Papers (2)
| | PDF (761 KB) | HTML

By utilizing synthesized stepped impedance resonators (SIRs) with high/low-impedance synthesized coplanar waveguides, a novel on-chip three-pole bandpass filter is realized on glass integrated passive device process. The synthesized SIR, formed by quasi-lumped series inductors and MIM capacitors, provides an effective way to utilize the chip area efficiently. The footprint of the miniaturized filt... View full abstract»

• ### Compact Balanced-to-Balanced Microstrip Diplexer With High Isolation and Common-Mode Suppression

Publication Year: 2014, Page(s):143 - 145
Cited by:  Papers (15)
| | PDF (533 KB) | HTML

In this letter, a compact balanced-to-balanced microstrip diplexer with high isolation and common-mode (CM) suppression is proposed for wireless local area networks (WLAN) and worldwide interoperability for microwave access (WiMAX) applications simultaneously. The proposed diplexer is designed via the combination of two balanced bandpass filters (BPF) without extra junction matching network. Both ... View full abstract»

• ### Highly Selective Reconfigurable Filter for UWB Systems

Publication Year: 2014, Page(s):146 - 148
Cited by:  Papers (4)
| | PDF (755 KB) | HTML

A novel highly selective compact reconfigurable filter with a switchable notched band for ultrawideband (UWB) systems is presented. The proposed filter exhibits two distinct features by altering switching device such as PIN diode (BAP65-02) in this case. First, a switchable notched band is generated which facilitates a rejection at 3.5 GHz to avoid interferences from the WiMAX systems. Later, a re... View full abstract»

• ### S-Shaped Complementary Split Ring Resonators and Their Application to Compact Differential Bandpass Filters With Common-Mode Suppression

Publication Year: 2014, Page(s):149 - 151
Cited by:  Papers (13)
| | PDF (631 KB) | HTML

This letter presents an S-shaped complementary split ring resonator (S-CSRR) for application in compact differential filters. The working principle of the proposed S-CSRR is explained and a circuit model is developed and validated through electromagnetic simulations. It is shown that an S-CSRR-loaded differential microstrip line with series gaps can be used in the design of compact differential ba... View full abstract»

• ### Compact Dual-Mode Wideband Filter Based on Complementary Split-Ring Resonator

Publication Year: 2014, Page(s):152 - 154
Cited by:  Papers (12)
| | PDF (686 KB) | HTML

This letter proposes a microstrip filter based on a dual-mode complementary split-ring resonator (DMCSRR). For the input/output coupling, a dual C-shaped feed structure is implemented together with the DMCSRR to acheive a wideband response. The resonator offers a wide fractional bandwidth of 62% at the central frequency of 2.23 GHz and a very compact structure with a footprint of 0.0625λ View full abstract»

• ### Design of a Compact Dual-Band Bandpass Filter Using Coupled Stepped-Impedance Resonators

Publication Year: 2014, Page(s):155 - 157
Cited by:  Papers (9)
| | PDF (524 KB) | HTML

A compact dual-band bandpass filter (BPF) using coupled three-section stepped-impedance resonators (SIRs) has been proposed and analyzed in this letter. By its symmetrical merit, the even-odd mode analysis method is used to obtain the input admittance of its bisection circuits. After the Richard's transformation, each bisection circuit is derived as an equivalent LC circuit. Combining these two LC... View full abstract»

• ### New Compact Triple-Passband Bandpass Filter Using Multipath-Embedded Stepped Impedance Resonators

Publication Year: 2014, Page(s):158 - 160
Cited by:  Papers (12)
| | PDF (773 KB) | HTML

This letter presents a new resonator configuration to design a triple-passband filter with high passband selectivity and compact circuit size. The filter includes two multipath-embedded stepped impedance resonators (SIRs), connected with magnetically coupling by via hole technique at the symmetric plane of the filter. The multipath-embedded SIR is designed at 1.575, 2.45, and 3.5 GHz. The resonant... View full abstract»

• ### Compact Wide Stopband Bandpass Filter on Multilayer Organic Substrate

Publication Year: 2014, Page(s):161 - 163
Cited by:  Papers (2)
| | PDF (649 KB) | HTML

We present the design and development of a compact wide stopband bandpass filter using novel quasi-lumped LC resonators on a defected ground structure. The resonators are built on a multilayer organic substrate and are coupled to external circuits by shunt-inductive impedance inverters. Experimental results show that the filter has a center frequency of 960 MHz and a 3 dB fractional bandwidth of 8... View full abstract»

• ### Compact Differential Wideband Bandpass Filters With Wide Common-Mode Suppression

Publication Year: 2014, Page(s):164 - 166
Cited by:  Papers (6)
| | PDF (639 KB) | HTML

A compact differential wideband bandpass filter (WBPF) composed of a coupled full-wavelength loop is presented. The differential-mode circuit of the proposed filter is analyzed, showing that the proposed filter exhibits a three-pole differential-mode (DM) wideband bandpass filtering response. Moreover, both the fractional bandwidth (FBW) and the inband return loss can be adjusted by changing the p... View full abstract»

• ### Phase Shifters With Wide Range of Phase and Ultra-Wideband Performance Using Stub-Loaded Coupled Structure

Publication Year: 2014, Page(s):167 - 169
Cited by:  Papers (11)
| | PDF (740 KB) | HTML

Compact planar phase shifters with wide range of differential phase shift across ultra-wideband frequency are proposed. To achieve that performance, the devices use broadside coupled structure terminated with open-ended or short-ended stubs. The theory of operation for the proposed devices is derived. To validate the theory, several phase shifters are designed to achieve a differential phase rangi... View full abstract»

• ### Low Loss Tunable Superconducting Dual-Mode Filter at L-Band Using Semiconductor Varactors

Publication Year: 2014, Page(s):170 - 172
Cited by:  Papers (5)
| | PDF (664 KB) | HTML

This letter presents a superconducting continuously tunable bandpass filter with dual-mode resonator and Gallium arsenide (GaAs) varactors. The even- and odd-modes of the dual-mode resonator can be tuned simultaneously using a single bias voltage. The interstage and external couplings are realized with interdigital coupling structure to enhance the coupling strength. A four-pole dual-mode supercon... View full abstract»

• ### Design of a Q-Band Eight-Way Lumped Power Divider in 90 nm CMOS Technology

Publication Year: 2014, Page(s):173 - 175
Cited by:  Papers (2)
| | PDF (1113 KB) | HTML

A Q-band eight-way power divider in CMOS technology is presented. This divider is designed using lumped elements to realize a compact layout. Parametric analyses for the parasitic effects are given using simplified inductor/capacitor models. Measurement in the 37-49 GHz frequency range shows an insertion loss less than 2.7 dB, the input/output return loss better than -13.7 dB and the port-to-port ... View full abstract»

• ### Wideband Single-Layer 90 $^{\circ}$ Phase Shifter Using Stepped Impedance Open Stub and Coupled-Line With Weak Coupling

Publication Year: 2014, Page(s):176 - 178
Cited by:  Papers (13)
| | PDF (747 KB) | HTML

This letter proposes a novel design approach of wideband 90 ° phase shifter, which comprises a stepped impedance open stub (SIOS) and a coupled-line with weak coupling. The result of analyses demonstrates that the bandwidths of return loss (RL) and phase deviation (PD) can be expanded by increasing the impedance ratio of the SIOS and the coupling strength of the coupled-line. For... View full abstract»

• ### Ultra-Wide Locking Range Regenerative Frequency Dividers With Quadrature-Injection Current-Mode-Logic Loop Divider

Publication Year: 2014, Page(s):179 - 181
Cited by:  Papers (1)
| | PDF (860 KB) | HTML

The ÷ 3 and ÷ 5 regenerative frequency dividers (RFDs) with ultra-wide locking ranges are presented. The proposed dividers were fabricated by a TSMC 90 nm CMOS process, using ÷ 2 and ÷ 4 quadrature-injected current-mode-logic loop dividers to widen the locking ranges. The dividers also achieved quadrature input and quadrature output. Using a 1.2 V supply voltage, the po... View full abstract»

• ### A Compact Single Stage V-Band CMOS Injection-Locked Power Amplifier With 17.3% Efficiency

Publication Year: 2014, Page(s):182 - 184
Cited by:  Papers (5)
| | PDF (422 KB) | HTML

This letter presents a fully integrated CMOS V-band injection-locked power amplifier (ILPA) for phase and frequency modulated millimeter-Wave (mm-Wave) transmitter. At mm-Wave frequency, multi-stage PAs are usually employed to achieve enough power gain due to low power gain of CMOS transistor even though it has low power efficiency. This work investigates mm-Wave ILPA for constant envelope modulat... View full abstract»

• ### Broadband Saturated Power Amplifier With Harmonic Control Circuits

Publication Year: 2014, Page(s):185 - 187
Cited by:  Papers (1)
| | PDF (852 KB) | HTML

This letter presents a broadband saturated power amplifier (PA) using the harmonic control circuits for base station application. The saturated PA has advantages for broadband operation with high efficiency due to the large tolerance of the second harmonic tuning. However, it is difficult to simultaneously achieve the fundamental and second harmonic impedance matching across a wide bandwidth. To s... View full abstract»

• ### Characterization of Class-F Power Amplifier With Wide Amplitude and Phase Bandwidth for Outphasing Architecture

Publication Year: 2014, Page(s):188 - 190
Cited by:  Papers (3)
| | PDF (953 KB) | HTML

A 2.14 GHz gallium nitride class-F power amplifier (PA) achieving both high efficiency and phase linearity over a wide frequency range is presented. The broadband PA is designed as one channel of outphasing architecture in cellular base-stations and analyzed in amplitude and phase domains. In amplitude domain, the PA exhibits measured maximum power added efficiency (PAE) of 80.1% with an output po... View full abstract»

• ### Voltage Tunable Multiferroic Phase Shifter With YIG/PMN-PT Heterostructure

Publication Year: 2014, Page(s):191 - 193
Cited by:  Papers (7)
| | PDF (395 KB) | HTML

Compact voltage tunable phase shifters on yttrium iron garnet/lead magnesium niobate lead titanate heterostructure are presented. A comparison of E-field tunability between 1-layer PMN-PT structure and two-layer PMN-PT structure using bending mode is discussed. The device exhibited a phase shift of 119 ° under an electric field of 11 kV/cm. The device combining with multiferroics and partia... View full abstract»

• ### A Doherty Power Amplifier With a GaN MMIC for Femtocell Base Stations

Publication Year: 2014, Page(s):194 - 196
Cited by:  Papers (14)
| | PDF (594 KB) | HTML

A Doherty Power Amplifier (PA) with the proposed GaN MMIC for femtocell base stations is presented. The MMIC was fabricated using a 0.25 μm TriQuint GaN process. An on-chip quadrature coupler based on a lumped magnetic coupler with capacitors was used to reduce the chip size. The MMIC with an area of 2.5 × 2.7 mm2 includes an input matching circuit, a driver transistor, ca... View full abstract»

• ### A Broadband Inductorless Active Power Divider for 10 Gbps High Speed Transmissions

Publication Year: 2014, Page(s):197 - 199
Cited by:  Papers (3)
| | PDF (761 KB) | HTML

A broadband and compact inductorless active power divider is presented in this letter. By using the Darlington cell, the proposed monolithic active power divider demonstrates broad and flat bandwidth of output 1 dB compression point over the 3 dB bandwidth. The gain-bandwidth performance, input matching, and device ratio of the Darlington cell are presented to achieve broad bandwidth. The proposed... View full abstract»

• ### High-Performance Wideband Low-Noise Amplifier Using Enhanced $\pi$-Match Input Network

Publication Year: 2014, Page(s):200 - 202
Cited by:  Papers (7)
| | PDF (863 KB) | HTML

A low noise-figure (NF) and high power gain (S21) 3 ~ 10 GHz ultra-wideband low-noise amplifier (UWB LNA) with excellent phase linearity using 0.18 μm CMOS technology is reported. An enhanced π-match input network is used to achieve wideband input impedance matching as well as high and flat S21. To achieve low and flat NF, the pole frequency and pole quality factor of the ... View full abstract»

• ### A Nonlinear Filter-Based Volterra Model With Low Complexity for Wideband Power Amplifiers

Publication Year: 2014, Page(s):203 - 205
Cited by:  Papers (7)
| | PDF (562 KB) | HTML

A nonlinear filter-based Volterra model with low complexity is proposed for modeling and characterizing wideband power amplifiers. This model has a similar form of a simplified second-order dynamic deviation reduction (DDR)-based Volterra model but without complex square root calculations and high order terms, which are replaced by a first-order nonlinear filter. The model parameters with smaller ... 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