Results 11 to 20 of about 67,407 (304)

Wideband Bandpass TM Cavity Filters With Wide Spurious Free Band

open access: yesIEEE Access, 2023
Recently, the spurious self-suppression method has been introduced and applied to the bandpass TM cavity filters to improve their stopband performance. However, this method has the limitation of being applicable only to TM narrow-band filters. This paper
Abdul Rehman, Cristiano Tomassoni
doaj   +1 more source

Design of multi-channel low phase noise synchronous frequency source

open access: yesDianzi 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

A Compact Wide Bandpass Filter for Satellite Communications with Improved Out-of-Band Rejection

open access: yesAdvanced Electromagnetics, 2020
This paper presents a compact C-band bandpass filter with improved out-of-band rejection. It consists of a symmetric three-pole parallel coupled line microstrip loaded with complementary split ring resonators (CSRRs) and slot resonators.
B. Ait Ahmed   +4 more
doaj   +1 more source

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

open access: yesIEEE 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
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

open access: yesMicromachines, 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   +6 more
doaj   +1 more source

Photonic-Assisted Microwave Frequency and Phase Shifter for Deception Jamming

open access: yesIEEE 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

Leptogenesis in crossing and runaway regimes [PDF]

open access: yes, 2014
We study the impact of effective thermal masses and widths on resonant leptogenesis. We identify two distinct possibilities which we refer to as crossing and runaway regimes.
Hohenegger, A., Kartavtsev, A.
core   +2 more sources

Lowpass filter for spurious suppression

open access: yesElectronics 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   +3 more
openaire   +1 more source

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

open access: yesiScience, 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   +2 more
doaj   +1 more source

Enhanced Bandwidth and Diversity in Real-Time Analog Signal Processing (R-ASP) using Nonuniform C-section Phasers [PDF]

open access: yes, 2016
We show that a continuously nonuniform coupled line C-section phaser, as the limiting case of the step discontinuous coupled-line multisection commensurate and non-commensurate phasers, provides enhanced bandwidth and diversity in real-time analog signal
Caloz, Christophe   +3 more
core   +1 more source

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