OOIR: Observatory of International Research

Papers

(The TQCC of Microwave and Optical Technology Letters is 3. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2022-08-01 to 2026-08-01.)

Article	Citations
A dual‐band dual‐polarized shared‐aperture SIW slot antenna array with beam scanning	56
Synthesis of Half‐Wavelength Dipole‐Based Plane Wave Generator With Consideration of Mutual Coupling Effects	43
A novel probe‐fed directional dielectric resonator antenna for mobile communication	38
A Novel Dual‐Beam mmWave Filter‐Antenna With Wide Azimuth Beam for 5G Communication Systems	36
A frequency reconfigurable microstrip antenna with radiation and scattering state switching	34
An impedance matching section based on composite right/left‐handed transmission line model in viewpoint of phase shift and noise figure	33
An Ultra‐Wideband GaN PA MMIC With High‐Efficiency	29
Design of high‐efficiency broadband power amplifier based on split‐ring resonator input matching network	24
Issue information	23
A Radar Path Loss Prediction Method for Nearshore Wind Farm Environments	20
Isolation enhancement of distinct element dual polarized compact MIMO antenna for 5G/WLAN application	20
Bistatic RCS Pattern Synthesis With a Receiver–Transmitter Metasurface and a Phase Distribution Optimization Algorithm	19
A novel method for obtaining gamma precoding values	19
A 1 THz Schottky transceiver front‐end based on 5 μm GaAs monolithic membrane	18
Detection of defects in composite insulators based on laser‐induced plasma combined with machine learning	18
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Noncontact Young's Modulus Measurement Using a Laser Interferometry–Digital Microscopy System: From Manganese Steel to Polylactic Acid Composites	17
Design of a Low‐Noise Amplifier With Highly Efficient Sub‐Harmonic Suppression Based on a Self‐Biasing Adaptive Filter for Nonlinear Radar	17
Broadband Low RCS and High Gain Radiation‐Scattering‐Integrated Metasurface Antenna Array	16
High isolation and high power of 0.13 µm CMOS SPDT switch using deep‐N‐well transistors and floating‐body technique in K‐band	16
Compact filters based on dual‐mode gap waveguide cavities and 3D printing technology	16
A 100 GHz Switched Beam Patch Antenna Array With 4 × ${\boldsymbol{\times }}$ 4 Butler Matrix Based on Metallic‐Nanowire‐Filled Membrane	16
A novel single‐layer dual‐band circularly polarized metasurface antenna for maritime communications	15
Miniaturized coplanar waveguide‐fed metamaterial inspired antenna for radio frequency identification applications	15
Packaged SIW Filtering Antenna Array With High Selectivity and Harmonic Suppression for Satellite Communications	15

A Meander Line Integrated Rectangular Tri‐Band Antenna for 5G Sub‐6GHz Applications	15
Mu Negative Decoupling Media for Tightly Arranged MIMO Antenna With Wide Decoupling Bandwidth and Deep Decoupling Intensity	15
Broadband Circularly Polarized Metasurface Antenna Based on Characteristic Mode Analysis	14
Novel input impedance analysis of differential feed microstrip antennas using the bi‐characteristic‐impedance transmission line (BCITL) model	14
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Design of compact balanced filters with wide DM upper stopband and CM rejection band based on semi‐circular patch	14
Compact Dual‐Band and Dual‐Circularly Polarized Stacked Antenna With Capacitive Feeding	13
A high‐efficiency power amplifier by using harmonics control	13
A dual‐band dual‐sense circularly polarized antenna based on chiral structure	13
High Scanning Rate Leaky‐Wave Antenna Using Mixed Cross‐Coupling Sections	13
A Novel Approach for Breast Cancer Detection Using Low‐Cost Textile Antennas	13
2‐D Scanning‐Angle Expansion of Phased Array Antenna Using Metalens	13
Design of 3×3 Nolen Matrix With Integrated Filter Function	13
Design of Tri‐Band Doherty Power Amplifier Using Phase and Impedance Constrained Optimization	13
Compact frequency‐reconfigurable circular patch antenna with varactor diode: Design, tuning, and compactness optimization	12
A Novel Filtering Dielectric Resonator Antenna With Enhanced Gain	12
Voltage‐controlled attenuator based on PIN diode and compensated gold wire inductors	12
Novel FR4‐based low loss reconfigurable filter with four operating modes using movable transmission lines	12
A millimeter‐wave broadband power amplifier with a tree‐like transistor structure using 0.15‐μm GaAs technology	12
Study of Unidirectional/Bidirectional Pattern—Reconfigurable Antenna With Impedance Match of Two Modes	12
High Gain Dual‐Slot Vivaldi Antenna Based on Elliptical Slots and Metamaterial	11
Data driven surrogate modeling of horn antennas for optimal determination of radiation pattern and size using deep learning	11
A Wideband Circularly Polarized 2 × 2 Patch Antenna Array	11
Inverse design of reflective metasurface antennas using deep learning from small‐scale statistically random pico‐cells	10
Resistive‐reactive class‐X power amplifier with bandwidth beyond one octave	10
A compact 5G band N77 bandpass filter with multiple zeros based on GaAs integrated passive device process	10
Design and fabrication of rudimentary shaped and effective 1 × 2 printed MIMO antenna using low profile material for WLAN and satellite applications	10
Optimization of partially thinned subarrays based on two‐stage random search method for large phased array antenna	10
A Wideband High Gain Transmit‐Array Antenna Exploiting Polarization‐Rotated Metasurface Cell	10
APD–SSPP: Enhancing Linearization of Power Amplifier Using Spoof Surface Plasmon Polariton Propagation	10
Low‐cost and easy‐to‐embed 7‐bit 360° phase shifter with transitions for large‐scale phased arrays	10
Single Longitudinal Mode 2081 nm Thulium Doped Fiber MOPA Laser With Free‐Space Design	10
Analysis of antenna arrays using equivalent sources for increase in computational efficiency for 5G and beyond	9
A 31–36 GHz low noise‐variable gain amplifier with less than 0.37° RMS phase error and 0.4 dB gain step in 65‐nm CMOS	9
Ultra‐Compact Flexible Antenna Fabrication Using Novel P‐PTFE Material for 5G and 6G Communication Systems	9
A Wideband and High‐Gain Filtering Slotline Antenna With Reconfigurable Notch Band	9
High‐gain high‐selectivity TE20‐mode SIW‐fed metasurface filtenna array for 5G millimeter‐wave applications	9
Synergizing meander line and heterogeneous composite for miniaturized hybrid microwave absorber	9
A high gain uniplanar end‐fire electrically small antenna with a spilt‐ring resonator loading	9
DDD coil design for wireless charging of unmanned aerial vehicles	9
Research on etalon‐free CO₂ measurement based on direct absorption signal fitting	9
Integrated liquid–liquid percentage determination microwave sensor exploiting single‐frequency transmission amplitude measurement technique	9
Structured Light Beams With Fractional Topological Charge	9
A Broadband High‐Power Eight‐Way Coaxial‐Waveguide Power Divider/Combiner	9
Ultra‐Sensitive Cancer Cell Detection Based on the Vernier Effect of Taper‐In‐Taper Structured Optical Fibers	8
Design of a Dual‐Band Reconfigurable Doherty Power Amplifier Based on Dual‐Mode and Dual‐State Optimization	8
Ultrawideband 3‐D printed aperture‐shared conformal dual‐horn antenna	8
A Wideband Profile‐Reduced Transmitarray Antenna Based on Phase‐Shifting Elements	8
Millimeter‐Wave Generation and Fiber Network Transmission Employing Carpet Weaver Optimization‐Based Deep Learning	8
Low Insertion‐Loss High Power X‐Band SPDT Transmit/Receive Switches in 250 nm GaN HEMT	8

An in‐band full‐duplex antenna for 2.4 GHz WLAN using differential‐feed based neutral coupling for isolation enhancement	8
High‐Gain Filtering Antipodal Vivaldi Antenna Incorporating Spoof Surface Plasmon Polaritons and Directors	8
Broadband Orbital Angular Momentum Beam Generation Using a Planar Archimedean Spiral Antenna	8
Low‐profile frequency selective surface with quasi‐elliptical bandpass response using antenna‐filter‐antenna approach	8
A Compact and Continuously Tunable 360° Phase Shifter Using Cascaded Transformer‐Based 180° Reflection‐Type and Switched‐Type Phase‐Shift‐Cell	8
A lighter weight substation infrared defect detection algorithm combining de‐weighted feature fusion and loss function fusion	8
A Universal High‐Gain Low‐Profile All‐Dielectric Lens Design Method for Feed Antennas	8
A Novel Wideband U‐Slot Dual Cavity Backed SIW MIMO Antenna at X‐Band for RADAR Application	8
Design of an ITO‐Based Multifunctional Absorber Featuring Acoustic and Thermal Insulation With Optical Transparency	8
LTCC Ultra‐Wideband Bandpass Filter With Wide Out‐Of‐Band Suppression Based on Composite Independent‐Filters Topology	8
Wideband radar cross section reduction of a circularly polarized antenna using polarization conversion metasurfaces	8
Flexible Circular Antenna Sensor With Multi Loops for Plantar Pressure Detection	8
Formation and Guiding Properties of the He ⁺ ‐Implanted Nd ³⁺ ‐Doped Silicate Glass Waveguide	8
Wideband Microstrip Fed Slot Antenna Featuring Mode Conversion and Coordinated Radiation	8
Miniaturized methane detection system based on photoacoustic spectroscopy	8
Multimode Full‐360° Reflection‐Type Phase Shifter for Multimode Multifunction Phased Arrays	7
Novel design of high isolation compact printed monopoles array for dual‐band application	7
A High Decoupled Nested SIW Cavity Self‐Nonuplexing L‐Shaped Slot Antenna With Self‐Shielding for Advanced Wireless Systems and IoT Applications	7
Performance comparison of different deconvolution methods on 2D terahertz imaging	7
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An Extremely Low‐Profile Wideband Patch Antenna for 5G Smartphones	7
Design of Photonic Crystal All‐Optical Analog‐to‐Digital Using Nonlinear Kerr Effect	7
Incident Angle Insensitive Focus Reconfigurable Reflective Metasurface Based on Polarization Control	7
Dot‐shaped transmit beamforming with nonuniform time‐modulated concentric circular frequency diverse array	7
Compact filtering magic‐T using a hybrid microstrip‐cavity structure	7
An ultra‐wideband MIMO system with multi‐loop mode for full‐screen smartphone applications	7
Compact groove‐loaded rectangular horn with equal dual‐polarization elliptical beams for reflector antenna application	7
Reflector‐based highly isolated dual‐polarized multibeam antenna	7
A Gradient Structure With Lattice Cores for Wide‐Band and Wide‐Angle Wave Transmission	7
Issue information	7
Stable Dual‐Beam Metasurface Antenna Array Based on Wideband Positive Phase Response Method	7
Low‐profile and broadband microstrip antenna with pattern diversity	7
Synthesis of sparse square arrays with high beam collection efficiency under minimum element spacing constraints	7
Wideband Class‐F power amplifier design based on harmonic control analysis and bandwidth expansion structure	7
Multiobjective Synthesis of Ultra‐Wideband Array Antennas in the Time Domain With High‐Power Pulse	7
Analysis and design of a wide stop‐band and high out‐of‐band suppression BPF	7
A broadband intermodulation reference generator based on artificial nonlinear dipole	7
A Narrowband Bandpass Filter With Wide Stopband Using Mixed Lumped and Distributed Circuits	6
Optimized MSA DPD method for improving 5G multiband optical fronthaul performance	6
Issue information	6
Issue information	6
Employing inverse Class‐E power amplifier series output filter in parallel Doherty power amplifier	6
High isolation 4‐port MIMO sloted antenna for Sub‐6 GHz wireless applications	6
X‐Band Photonics Radar System for Autonomous sUAV Target Parameter Estimation Using Micro‐Doppler TF Analysis	6
A Miniaturized and Angular Stability Switchable Frequency Selective Surface	6
Development of a metamaterial‐based compact applicator for hyperthermia	6
A novel algorithm of the perfectly matched layer based on the Runge–Kutta method of order 2 accuracy	6
Characterization and Compensation of Nonideal Effects of Modulation Functions in Time‐Modulated Array for Direction‐of‐Arrival Extraction	6
A 25 Gb/s burst‐mode TIA+CDR optical receiver with 4.5 ns total reconfiguration time	6
A 24.25–30 GHz radio frequency up‐down converter with harmonic distortions rejection for 5G millimeter wave radio channel emulator applications	6
A physical‐based model for on‐chip double‐layer spiral inductors with a ground shield	6
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Compact metal‐printed filtering antenna with wideband performance	6
A Flexibly Switchable Microwave Signal Generation Scheme by Using an Optoelectronic Oscillator Incorporating a Multi‐Passband Microwave Photonic Filter	6
Broadband circularly polarized filtering patch antenna based on metasurface	6
Design and application of D‐band bandpass filter based on 0.18 μm complementary metal oxide semiconductor process	6
A dual‐band tightly arranged multiple‐input multiple‐output antenna pair for 5G mobile terminals	6
Oxygen detection based on Faraday modulation spectroscopy and wavelength modulation spectroscopy: A comparison	6
An On‐Board Ultra‐Small Wide‐Beam Circularly Polarized Microstrip Antenna	6
Rapid detection and identification of rocks and minerals by laser‐induced breakdown spectroscopy	6
Solid materials characterization using split ring resonators enclosed by power divider	6
High‐Sensitivity MIM Waveguide Sensor With Triple Fano Resonances for Multi‐Parameter Detection of Plasma and Ammonium Chloride	6
Broadband Omnidirectional Filtenna With Controllable Radiation Nulls and Bandwidth	6
Using intrinsic‐resonance of an interdigitated microwave capacitor for detecting glyphosate‐based herbicide in water	6
Flat top coverage pattern maintaining via boundary subarray elements thinning	6
High birefringence and near‐zero dispersion control of nonlinear photonic crystal fibers with a double‐cladded coaxial core	6
Microstructured optical beams with azimuthal polarization in stratified absorbent media	6
Impact of impedance compensation structure in coaxial‐microstrip transition section on near‐field radiation	6
Inverse design of multiparameter antenna using hybrid machine learning‐driven training dataset	6
Low‐Profile Broadband Magneto‐Electric Dipole Filtering Antenna Utilizing Shared‐Edge C‐Shaped Slot Structure	6
High‐Performance Compact 48‐Channel Arrayed Waveguide Grating on Improved Silica Platform	6
Near‐Infrared CH ₄ System Based on FWA‐LSSVM Model for Coal Mines	6
Spatially tunable and self‐healing plasmonic Talbot imaging by using periodic metal nanopore arrays	6
A self‐quadruplexing antenna for quad‐band wireless applications	6
Dual‐band full‐duplex antenna with high isolation using differential fed and dual‐polarization	6
Precise Bias Control of Mach–Zehnder Modulators Without Second‐Order Pilot Tones	6
Silver sulfide as Q‐switcher and mode‐locker in Erbium‐doped fiber laser cavity	6
A high‐linearity LC‐VCO with combined MOS varactors and bulk‐biased PMOS varactors for gain variation compensation	5
Comparative analysis of X‐band FSS fabricated by inkjet printing and conventional etching technique	5
A reconfigurable phase gradient metasurface antenna for beam steering	5

A Novel Peano Fractal‐Based MIMO Antenna for Wireless Capsule Endoscopy	5
Performance Analysis of Radio Frequency/Underwater Wireless Optical Communication System With Fog Conditions Based on NOMA	5
Investigating orthogonal frequency division multiplexing using high‐power LED for visible light communication	5
Investigation of isolation enhancement and tune‐ability in patch antenna arrays	5
Issue information	5
An FSS structure with a band‐stop performance for UWB applications	5
Investigating the jamming effect of HPM with different frequencies on SDR	5
Design of a compact magneto‐electric dipole antenna	5
Isolation improvement between two tightly coupled QMSIW MIMO antenna elements using spoof surface plasmon polariton structure	5
Real‐Time Monitoring System for Stator and Rotor Temperature of Hydroelectric Generator Based on Fluorescent Optical Fiber Sensing	5
Active near‐infrared laser heterodyne system based on supercontinuum laser source for gas measurement	5
Two‐Dimensional Wide‐Angle Beam‐Switching Using Beamforming Matrix and Reconfigurable Antenna Array for Base Station Applications	5
Polarization‐Reconfigurable Multi‐Antenna for High Mutual Coupling Reduction Using Backload Parasitic Structure	5
Electromagnetic Illusion Device Based on Diffraction Neural Network	5
Estimation of Staphylococcus total viable count in different contamination states of central venous catheters in hemodialysis centers based on tunable di	5
High‐performance balanced dual‐band bandpass filter with controllable bandwidth and frequency ratio	5
Isolation enhancement of compact co‐polarized circular patch antennas using embedded series resonator	5
Properties of a Lorentz correlated beam in uniaxial crystal	5
A programmable solar‐powered radio frequency transmitter	5
High Q‐factor anapole mode based on localized spoof surface plasmon polaritons	5
Field test of an enhanced LIPS to direct‐monitor the elemental composition of particulate matters in polluted air	5
Wideband second‐order bandpass frequency selective surface with high selectivity	5
Measurement and Analysis of Overlapping Ammonia Spectral Lines via Dual‐Comb Spectroscopy	5
Compact Filtering Microstrip Antenna With Enhanced Out‐of‐Band Suppression	5
Miniaturized circularly polarized metasurface antenna based on characteristic mode analysis	5
The spectral‐voltage calibration technology of multispectral pyrometers based on Gauss–Newton‐genetic algorithm method for nonsource temperature regions	5
Broadbeam Substrate Integrated Waveguide Traveling Wave Antenna for Wearable Applications	5
Switchable Multi‐Band Filtering Attenuator	5
Analysis of C and S Trace Elements in Steel Using Orthogonal Preablation Dual‐Pulse Laser Induced Breakdown Spectroscopy	5
Ultrathin and conformal frequency selective surfaces bandpass filter to eliminate the 5G bands on radio altimeters	5
A D‐band wideband low‐cost array for antenna‐in‐package applications	5
A Petal‐Shaped Four‐Port MIMO Antenna for 5G Mobile Communications	5
Zinc oxide nanorods electronically controlled terahertz modulator	5
Design of TMLAA for the Utilization of Radiated Harmonic Beam Over Digital Modulation Schemes	5
Online measurement of birefringence of sensing fibers in the AFOCT system	5
2.5D Frequency Selective Surface for Polarization‐Insensitive Cross‐Polarization Conversion	5
Design of microstrip Yagi‐Uda antenna array for 4.5 GHz band fixed wireless access in 5G	5
Wideband filtering power dividers with/without notch band	5
Optimization of signal‐to‐noise ratio of laser heterodyne radiometer	5
Beam‐squint rectified balanced antipodal Vivaldi antenna with sliced fins and quarter‐wavelength labyrinth director	5
Multilayer circular SIW cavity differential bandpass filter with wide‐stopband characteristics	5
Wide Stopband Bandpass Filter for 5G N79 Band Applications	5
An Ultra‐Wideband Multimode Dual‐Polarized Metasurface Antenna	5
An elliptical‐shaped rectangular slot antenna at 2.48 GHz for hyperthermia application	5
Design of modulated signal waveform in fully digital programmable optical frequency comb	5
Fabrications of electrically small hemispherical antenna	5
Tin oxide as a Q‐switcher in an Nd‐doped fiber laser	5
Erratum to A dual band compact circularly polarized antenna for GPS applications	5
An L‐Band Dual‐Frequency Pulse Suppression Navigation Antenna for UAVs	5
A novel wideband compact circularly‐polarized metasurface antenna for modern vehicular communication systems	5
Design of Two‐Dimensional 90° Filtering Couplers Based on Combined 90° and 180° Couplers	5
Inverse Design of an Ultra‐Compact Symmetric 3‐dB Optical Power Splitter Based on N‐ary Digital Pattern	5
Nonreciprocity of thermal radiation in attenuated total reflection‐mediated optical waveguide	5
A broadband single‐layer reflectarray antenna with split ring element	5
RZ‐PPM impulse tone‐based CSI estimation for adaptive threshold decision in FSO communications	5
Millimeter micro‐coaxial beam steering array for high‐speed satellite communications	5
Short‐Wave Broadband Antenna Based on Composite Loading Technique	4
Performance Enhanced Compact Multiband Antenna for Smartwatch Applications	4
Bandwidth‐reconfigurable filtering phase shifters with phase‐slope alignment for different bandwidth states	4
Optimization of QEPAS Sensing Performance via Numerical Simulation and Experimental Measurement	4
Effect of argon on classification and identification of organics based on laser‐induced breakdown spectroscopy	4
Dynamically tuning and reconfiguring microwave bandpass filters using optical control of switching elements	4
A Low‐Profile Broadband Gain Enhancement Fabry‐Pérot Antenna With an Array Source and Vertical Metal Walls	4
X‐Band Air‐Filled Coaxial Bandpass Filter With Wideband Input‐Reflectionless Performance	4
A wideband fully enclosed coaxial‐to‐substrate‐integrated waveguide transition and its applications in a 1‐to‐4 radial power divider	4
Dual‐Band MIMO Antenna With Enhanced Isolation Using Mode Cancellation	4
Q‐factor enhanced resonator biosensor optimized by adaptive genetic algorithm for glucose detection	4
Research on temperature and pressure interference in photoacoustic spectroscopy gas detection	4
A Leaky‐Wave Antenna With Single‐Beam Full‐Space Scanning Capability	4
A High Conversion Gain and Low Phase Noise Self‐Oscillating Mixer Based on Positive Feedback Technique	4
A high‐performance dual‐polarized corrugated horn for a compact antenna test range system	4
Modified T‐Shaped Resonators–Based Wideband Bandpass Filter for 5G Midband Communication	4
Passively Q‐switched operation of a Tm:YAP laser with two WS₂‐based saturable absorbers	4
Influence of water vapor concentration on photoacoustic spectroscopy‐based characteristic gas analysis of transformer faults	4
A Low‐Profile High‐Performance Endfire Antenna Incorporating Parasitic Elements and Spoof Surface Plasmon Polaritons	4
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Operation of a passively Q‐switched Tm:YAP laser with Ta₂NiS₅ as a saturable absorber	4
Quad‐Band Bandpass Filter Using Asymmetric Short Stub Loaded E‐Type Resonators	4
Broadband, high gain 2 × 2 subarray and 2 × 8 cavity‐backed antenna arrays for 5G mmWave applications	4
Issue information	4
Simultaneous Gain Enhancement and Miniaturization of a UHF RFID Antenna via a PDMS‐Loaded Multilayer Structure: Experimental Validation	4
An Area‐Efficient 2.45 GHz CMOS 180 nm Power Amplifier With Mono‐Passive‐Inductor and Active Inductor Driver for IoT Applications	4
Development of 1.6‐μm Er: YAG solid‐state laser for lidar	4
Study on Thermally Induced Spot Drift Effect in Yb ³⁺ ‐Doped N × N Square‐Array Multicore Fibers	4
Design of negative refractive index 3D metamaterial split ring resonator for IoT applications	4
A 28 GHz balun‐first LNA with db‐linear 32 db gain range for 5 G applications	4
Theoretical and experimental investigation of on‐chip silicon‐on‐insulator waveguide methane sensor	4
Dual‐Band Circularly Polarized Helix Antenna With Conical Radiation Pattern for Global Navigation Satellite Systems Application	4
Broadband high‐efficiency high‐gain dual‐beam empty substrate integrated waveguide cavity‐backed filtenna	4
Balanced bandpass microstrip filter with high common‐mode rejection and extended stopband	4
A curved single‐layer FSS design for gain improvement of a compact size CPW‐fed UWB monopole antenna	4
Investigation and reduction of finite width effect of coupling beam in bandwidth estimation of coupled MEMS resonator	4
Miniaturized Self‐Diplexing Antenna Design With Dual‐Mode Operation in Each Band and Based on a Double‐Layered Open Cavity	4
A novel modified Kock–Snowflake fractal MIMO antenna for 4G/5G UWB communication gadgets	4
Reconfigurable Dual‐Band Balanced Filter Using Quad‐Mode Cavity Resonator	4