# IEEE Transactions on Microwave Theory and Techniques

## Filter Results

Displaying Results 1 - 25 of 36

Publication Year: 2012, Page(s):C1 - C4
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• ### IEEE Transactions on Microwave Theory and Techniques publication information

Publication Year: 2012, Page(s): C2
| PDF (45 KB)
• ### 2011 RFIC Symposium Mini-Special Issue Editorial

Publication Year: 2012, Page(s): 1185
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• ### Analysis of Composite Right/Left-Handed Unit Cells Based on Even–Odd-Mode Excitation

Publication Year: 2012, Page(s):1186 - 1196
Cited by:  Papers (10)
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Even-odd-mode analysis is applied to symmetric composite right/left-handed (CRLH) structures in order to decompose the network into the two impedances Ze and Zo. It is shown that these impedances are sufficient to completely describe the behavior of arbitrary symmetric CRLH structures. Consequently, the propagation constant, as well as the Bloch impedance, are d... View full abstract»

• ### An Equivalent Circuit for Discontinuities Exciting Evanescent Accessible Modes

Publication Year: 2012, Page(s):1197 - 1209
Cited by:  Papers (3)
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An equivalent circuit for discontinuities exciting evanescent accessible modes is proposed. The key feature of this equivalent circuit is its capability for simplification if a port relative to an accessible evanescent mode is matched, or connected to a very long line. Circuit drawing is simple, fast, and based on a regular polygon with as many susceptances as the sides and diagonals. Each side is... View full abstract»

• ### A Broadband U-Slot Coupled Microstrip-to-Waveguide Transition

Publication Year: 2012, Page(s):1210 - 1217
Cited by:  Papers (15)
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A novel planar broadband microstrip-to-waveguide transition is proposed in this paper. The referred waveguide can be either rectangular waveguide or ridged waveguide. The transition consists of an open-circuited microstrip quarter-wavelength resonator and a resonant U-shaped slot on the upper broadside wall of a short-circuited waveguide. A physics-based equivalent-circuit model is also developed ... View full abstract»

• ### Approach to the Design of Asymmetric Coupled-Line Directional Couplers With the Maximum Achievable Impedance-Transformation Ratio

Publication Year: 2012, Page(s):1218 - 1225
Cited by:  Papers (4)
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A novel approach to the design of asymmetric coupled-line impedance-transforming directional couplers with the maximum achievable impedance-transformation ratio is proposed. It is shown that the couplers in which one conductor is completely shielded from the other can be represented by two uncoupled transmission lines, which significantly simplifies the design procedure. Furthermore, the proposed ... View full abstract»

• ### Compact Broadband Gysel Power Divider With Arbitrary Power-Dividing Ratio Using Microstrip/Slotline Phase Inverter

Publication Year: 2012, Page(s):1226 - 1234
Cited by:  Papers (36)
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A compact broadband Gysel power divider with arbitrary power-dividing ratio is proposed. This divider is derived from the conventional Gysel power divider by substituting an ideal phase inverter for the 180° phase shifter, which significantly improves the bandwidth and reduces the circumference to 1 λg evaluated at the center frequency. A wide range of power-dividing ratio... View full abstract»

• ### Crosstalk Reduction for Superconducting Microwave Resonator Arrays

Publication Year: 2012, Page(s):1235 - 1243
Cited by:  Papers (17)
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Large-scale arrays of microwave kinetic inductance detectors (MKIDs) are attractive candidates for use in imaging instruments for next generation submillimeter-wave telescopes such as CCAT. We have designed and fabricated tightly packed ~250-pixel MKID arrays using lumped-element resonators etched from a thin layer of superconducting TiNx deposited on a silicon substrate. The high pixel... View full abstract»

• ### Synthesis of Microwave Filters by Inverse Scattering Using a Closed-Form Expression Valid for Rational Frequency Responses

Publication Year: 2012, Page(s):1244 - 1257
Cited by:  Papers (6)
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In this paper, a novel technique to synthesize microwave filters by inverse scattering is proposed. It provides an exact solution for the synthesis problem, by means of a closed-form expression, with very low computational cost. The technique is valid when the target frequency response can be expressed as a rational function. The coupled-mode theory is used to model microwave propagation along the... View full abstract»

• ### Switchless Tunable Bandstop-to-All-Pass Reconfigurable Filter

Publication Year: 2012, Page(s):1258 - 1265
Cited by:  Papers (40)
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The theory of a new type of bandstop-to-all-pass reconfigurable filter is developed in this work. A bandstop filter structure with both source-to-load and inter-resonator coupling is implemented. The synthesis equations are manipulated such that the signals in the filter's resonators and source-to-load transmission line can be made to constructively or destructively interfere at the output port th... View full abstract»

• ### Design and Diagnosis of Wideband Coupled-Resonator Bandpass Filters

Publication Year: 2012, Page(s):1266 - 1277
Cited by:  Papers (2)  |  Patents (1)
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A method for circuit elements parameter extraction of wideband filters from their electromagnetic (EM) simulated response is presented. A combline-like resonator for filter realization is introduced. Several possible electric and magnetic coupling structures are investigated. The equivalent lumped element circuit has electric and magnetic couplings modeled by capacitors and inductors instead of fr... View full abstract»

• ### Highly Miniaturized Multiband Bandpass Filter Design Based on a Stacked Spiral Resonator Structure

Publication Year: 2012, Page(s):1278 - 1286
Cited by:  Papers (12)
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This paper describes a stacked spiral resonator (SSR) structure for designing very compact multiband bandpass filters. The resonant frequencies of the proposed SSR structure can be determined by designing the spiral geometry and controlling the mutual coupling in a stacked structure. The multiple passband bandwidths can then be determined by the spacing of different layer patterns between two coup... View full abstract»

• ### A Narrow-Passband and Frequency-Tunable Microwave Photonic Filter Based on Phase-Modulation to Intensity-Modulation Conversion Using a Phase-Shifted Fiber Bragg Grating

Publication Year: 2012, Page(s):1287 - 1296
Cited by:  Papers (67)
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A novel approach to implementing a narrow-passband and frequency-tunable microwave photonic filter (MPF) based on phase-modulation to intensity-modulation conversion in a phase-shifted fiber Bragg grating (PS-FBG) is proposed and experimentally demonstrated. In the proposed MPF, a phase-modulated signal is sent to a PS-FBG. If one of the sidebands falls in the notch of the PS-FBG, the phase-modula... View full abstract»

• ### A 2-D Electronically Steered Phased-Array Antenna With 2$,times,$ 2 Elements in LC Display Technology

Publication Year: 2012, Page(s):1297 - 1306
Cited by:  Papers (19)
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For the first time, a 2-D electronically steered phased-array antenna with a liquid-crystal (LC)-based variable delay line is presented. The structure, which is designed at 17.5 GHz, consists of a 2 × 2 microstrip patch antenna array, continuously variable delay lines with a novel geometry, RF feeding, and biasing networks. The expected insertion loss of the variable delay line is less than... View full abstract»

• ### W-Band Silicon-Based Frequency Synthesizers Using Injection-Locked and Harmonic Triplers

Publication Year: 2012, Page(s):1307 - 1320
Cited by:  Papers (34)
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Two monolithically integrated W-band frequency synthesizers are presented. Implemented in a 0.18 μm SiGe BiCMOS with fT/fmax of 200/180 GHz, both circuits incorporate the same 30.3-33.8 GHz PLL core. One synthesizer uses an injection-locked frequency tripler (ILFT) with locking range of 92.8-98.1 GHz and the other employs a harmonic-based frequency triple... View full abstract»

• ### A Wideband CMOS/GaAs HBT Envelope Tracking Power Amplifier for 4G LTE Mobile Terminal Applications

Publication Year: 2012, Page(s):1321 - 1330
Cited by:  Papers (52)  |  Patents (3)
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A high-efficiency envelope tracking power amplifier for long-term evolution (LTE) handset mobile terminals is presented. The envelope amplifier consists of a wideband buffered linear amplifier as a voltage source and a hysteretically controlled switching amplifier as a dependent current source. The linear amplifier has a high current drive capability of approximately 500 mA while consuming only 12... View full abstract»

• ### A CMOS Distributed Amplifier With Distributed Active Input Balun Using GBW and Linearity Enhancing Techniques

Publication Year: 2012, Page(s):1331 - 1341
Cited by:  Papers (20)
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A CMOS distributed amplifier (DA) with distributed active input balun is presented that achieves a gain-bandwidth product of 818 GHz, while improving linearity. Each gm cell within the DA employs dual-output two-stage topology that improves gain and linearity without adversely affecting bandwidth (BW) and power. Comprehensive analysis and simulations are carried out to investigate gain, BW,... View full abstract»

• ### Millimeter-Wave Self-Healing Power Amplifier With Adaptive Amplitude and Phase Linearization in 65-nm CMOS

Publication Year: 2012, Page(s):1342 - 1352
Cited by:  Papers (24)  |  Patents (2)
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A self-healing two-stage millimeter-wave broadband power amplifier (PA) with on-chip amplitude/phase compensation is realized in 65-nm CMOS. The amplitude and phase compensations are accomplished by using feedback bias/capacitive schemes to extend the linear operation region and optimize the PA efficiency. Tunable control knobs are inserted in the linearization block to enhance the PA performance ... View full abstract»

• ### Analysis and Implementation of Doherty Power Amplifier With Two-Point Envelope Modulation

Publication Year: 2012, Page(s):1353 - 1364
Cited by:  Papers (6)
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In this paper, the effect of the fundamental current provided by a peaking cell consisting of a Doherty amplifier is analyzed using a new closed-current model. The proposed current model can be used as a foundation to accurately explain and optimize previous compensation methods such as uneven, asymmetric, and gate envelope cases. Based on the proposed analysis, and in conjunction with the envelop... View full abstract»

• ### Two-Way Current-Combining $W$-Band Power Amplifier in 65-nm CMOS

Publication Year: 2012, Page(s):1365 - 1374
Cited by:  Papers (37)
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This paper presents a two-way current-combining-based W-band power amplifier (PA) in 65-nm CMOS technology. An analytical model and design method for W-band power combiners are presented, which indicates current combining is preferred for millimeter-wave frequencies due to a good current handling capability, symmetrical design, and low sensitivity to parasitics. To demonstrate the co... View full abstract»

• ### A 130-nm CMOS 100-Hz–6-GHz Reconfigurable Vector Signal Analyzer and Software-Defined Receiver

Publication Year: 2012, Page(s):1375 - 1389
Cited by:  Papers (18)
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A monolithic 100-Hz-6-GHz reconfigurable vector signal analyzer (VSA) and software-defined receiver (SDR), following a two-step up-down conversion heterodyne scheme with robustness to various wideband interference scenarios and local oscillator (LO) harmonic mixing, is presented. The 130-nm CMOS chip does not require external filters or baseband processing to reduce the effect of interferences or ... View full abstract»

• ### Single-Chip Multiband EGPRS and SAW-Less LTE WCDMA CMOS Receiver With Diversity

Publication Year: 2012, Page(s):1390 - 1396
Cited by:  Papers (21)  |  Patents (2)
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A single-chip multimode multiband receiver is designed and implemented in a 90-nm CMOS process for fourth-generation mobile platforms. The receiver includes nine primary low-noise amplifier (LNA) and five secondary LNA input ports, and supports long-term evolution (LTE)/WCDMA/ehanced general packet radio serve (EGPRS) standards for four gobal system for mobile communications bands, ten WCDMA bands... View full abstract»

• ### Subharmonic 220- and 320-GHz SiGe HBT Receiver Front-Ends

Publication Year: 2012, Page(s):1397 - 1404
Cited by:  Papers (65)  |  Patents (1)
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Monolithically integrated 220- and 320-GHz receiver front-ends manufactured in an engineering version of anfT/fmax=280/435-GHz SiGe technology are presented. Subharmonic mixing is provided by a Gilbert cell with stacked switching quads fed by quadrature 110/160-GHz local oscillator (LO) signals. The 220-GHz version of the front-end is equipped with an integrated... View full abstract»

• ### A $K$ -Band CMOS UWB Radar Transmitter With a Bi-Phase Modulating Pulsed Oscillator

Publication Year: 2012, Page(s):1405 - 1412
Cited by:  Papers (13)
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This paper presents a K-band CMOS UWB radar transmitter with highly accurate variable delay circuits and a bi-phase modulating pulsed oscillator. The UWB radar transmitter is composed of three blocks: variable delay circuits that consist of a digital synchronized counter and a Vernier delay line (VDL), a baseband control signal generator, and a pulsed oscillator. The VDL allows a high range accura... View full abstract»

## Aims & Scope

The IEEE Transactions on Microwave Theory and Techniques focuses on that part of engineering and theory associated with microwave/millimeter-wave components, devices, circuits, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, and industrial, activities. Microwave theory and techniques relates to electromagnetic waves usually in the frequency region between a few MHz and a THz; other spectral regions and wave types are included within the scope of the Society whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design..

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## Meet Our Editors

Editor-in-Chief
Luca Perregrini
luca.perregrini@unipv.it

Editor-in-Chief
Jose Carlos Pedro
edit.tmtt@ua.pt