Results 11 to 20 of about 472,445 (299)

A 3-D Printed Bandpass Filter Using TM₂₁₁-Mode Slotted Spherical Resonators With Enhanced Spurious Suppression [PDF]

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, Cheng Guo, Yi Zhang, Yang Gao, Bing Liu, Minjie Shu, Yi Wang, Yuliang Dong, Michael J. Lancaster, Jun Xu   +9 more
doaj   +2 more sources

Edge treatment for spurious mode suppression in thin-film lithium niobate resonators

Scientific Reports
Thin-film lithium niobate is an attractive material for RF acoustic devices because of its high electromechanical coupling. However, due to the large coupling and the high anisotropy, thin-film lithium niobate resonators are prone to accidental ...
Arjun Aryal, Sidhant Tiwari, Darren W. Branch, Aleem Siddiqui, Tito Busani   +4 more
doaj   +2 more sources

Spurious-Mode Suppression in Sc_0.2Al_0.8N Film Lamb Wave Resonators and Filters with Arc-Shaped Apodization

Micromachines
Lamb wave devices have the advantage of monolithic multi-frequency integration and show great application potential in mobile communications. However, their performance is often limited by spurious modes. In this work, an arc-shaped apodization electrode
Kai Cai, Haiyang Li, Tingting Yang, Qinwen Xu, Yao Cai   +4 more
doaj   +2 more sources

Design of multi-channel low phase noise synchronous frequency source

Dianzi Jishu Yingyong, 2021
In order to meet the requirement of high stability frequency source when DRFM(Digital Radio Frequency Memory) system collects external input signals, a design method of multi-channel, low phase noise synchronous frequency source based on two-stage PLL is
Xu Wei, Pan Minghai, Zhang Yanjing
doaj   +1 more source

Fractional Bandwidth up to 24% and Spurious Free SAW Filters on Bulk 15°YX-LiNbO₃ Substrates Using Thickness-Modulated IDT Structures

Micromachines, 2022
To cope with ubiquitous wireless connectivity and the increased and faster data delivery in 5G communication, surface acoustic wave (SAW) filters are progressively requiring wider bandwidths.
Zengtian Lu, Sulei Fu, Zhibin Xu, Weibiao Wang, Qiaozhen Zhang, Jianrun Zhang, Hui Zhang   +6 more
doaj   +1 more source

Spurious suppression techniques in integrated and embedded microwave components [PDF]

, 2021
To increase bandwidth and mitigate interference in a crowded electromagnetic spectrum, future microwave systems will move to higher operating frequencies. Because lumped elements perform poorly at high frequencies, designers use distributed elements for
Karber, Grant
core  

Lowpass filter for spurious suppression

Electronics Letters, 2002
A novel microstrip-type lowpass filter is proposed to effectively suppress spurious passbands. It is composed of series microstrips and open-ended microstrips with thin or thick film resistors appropriately inserted. The proposed lowpass filter was shown to suppress the spurious responses by more than 20 dB compared with a conventional microstrip ...
M.-Q. Lee, K.-K. Ryu, I.-B. Yom, S.-P. Lee   +3 more
openaire   +1 more source

The PWWP2A Histone Deacetylase Complex Represses Intragenic Spurious Transcription Initiation in mESCs

iScience, 2020
Summary: Transcriptional fidelity depends on accurate promoter selection and initiation from the correct sites. In yeast, H3K36me3-mediated recruitment of the Rpd3S HDAC complex to gene bodies suppresses spurious transcription initiation.
Guifeng Wei, Neil Brockdorff, Tianyi Zhang   +2 more
doaj   +1 more source

Photonic-Assisted Microwave Frequency and Phase Shifter for Deception Jamming

IEEE Photonics Journal, 2021
A new microwave photonic signal processing structure that has the ability to realise frequency and phase shifting operation is presented. The proposed structure uses Serrodyne phase modulation in a dual-polarisation binary phase shift keying (DP-BPSK ...
Chongjia Huang, Erwin H. W. Chan
doaj   +1 more source

Spurious Self-Suppression Method: Application to TM Cavity Filters

, 2022
This paper presents a new approach for improving spurious free band in filters. The main idea is to control the coupling coefficients of the spurious resonances, in order to force them to cancel each other.
Rehman, Abdul, Tomassoni, Cristiano
core   +1 more source