Results 11 to 20 of about 30,488 (265)
Control of Higher Order Harmonics and Spurious Modes for Microstrip Patch Antennas
IEEE Access, 2018 In rectifying or active antenna systems, the higher order modes can hamper the system efficiency, and thus, the filter antennas are used to eliminate the harmonic radiation.
Weiwen Li +3 more
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Transversal Filters based on Stacked Crystal Filters with Spurious Mode Suppression
2021 IEEE MTT-S International Microwave Filter Workshop (IMFW), 2021 The transversal filter topology consists of resonators which require both positive and negative coupling to the input/output which typically necessitates the use of a BALUN. In this paper, transversal filters based on stacked crystal filters (SCFs) are presented.
Yusuf, Yazid +4 more
openaire +1 more source
Miniaturized tri-notched wideband bandpass filter with ultrawide upper stopband suppression
Scientific Reports, 2021 Stepped impedance resonator (SIR) and its derivative resonators are widely used in the design of microwave filters. However, many spurious modes will be introduced into the stopband, resulting in lower upper stopband suppression and performance ...
Chen-Hao Wang, Xiao-Min Shi
doaj +1 more source
IEEE Access, 2020 This article presents a Ka-band fourth-order slotted spherical resonator waveguide bandpass filter (BPF) with a wide spurious suppression stopband.
Fan Zhang +9 more
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Photonic Integrated Frequency Shifter Based on Double Side Band Modulation: Performance Analysis
Photonics, 2022 In this research, we present an analysis of a photonic integrated frequency shifter as a stage for a THz dual comb generator. We studied the performance of the PIC by simulating it with standard building blocks, and aimed toward an improvement of the ...
Andrés Betancur-Pérez +2 more
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Sensors, 2020 A surface acoustic wave (SAW) device with an aluminum nitride (AlN) composite structure of Al2O3/IDTs/AlN/Metal/Si was proposed for sensing at extreme high-temperature in this work. Optimization allowing determination of optimal design parameters for SAW
Shuyao Fan +5 more
doaj +1 more source
Modular Design of Waveguide Bandpass Filters With Improved Stopband and High Selectivity
IEEE Journal of Microwaves, 2023 A class of waveguide bandpass filters (BPFs) with parallel coupling topology is proposed by stacking rectangular cavities. Compared with transversal filters, each layer comprises more than one cavity, and these cavities are cascaded with electric or ...
Zai-Cheng Guo, Longji Chen, Lei Zhu
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Hyper-Selective Plasmonic Color Filters [PDF]
, 2016 The subwavelength mode volumes of plasmonic filters are well matched to the small size of state-of-the-art active pixels (~ 1 {\mu}m) in CMOS image sensor arrays used in portable electronic devices.
Atwater, Harry +3 more
core +3 more sources
Spin distribution of nuclear levels using static path approximation with random-phase approximation [PDF]
, 2007 We present a thermal and quantum-mechanical treatment of nuclear rotation using the formalism of static path approximation (SPA) plus random-phase approximation (RPA). Naive perturbation theory fails because of the presence of zero-frequency modes due to
A. Gilbert +6 more
core +2 more sources
IET Microwaves, Antennas & Propagation, 2023 An improved simplified composite right‐/left‐handed (SCRLH) zeroth‐order resonator (ISZOR) is introduced, comprising two lateral parallel capacitors and a centred T‐type inductor circuit.
Yongchang Yu +4 more
doaj +1 more source