Article
Computer Science, Hardware & Architecture
Onkar Susladkar, Gayatri Deshmukh, Subhrajit Nag, Ananya Mantravadi, Dhruv Makwana, Sujitha Ravichandran, R. Sai Chandra Teja, Gajanan H. Chavhan, C. Krishna Mohan, Sparsh Mittal
Summary: In this paper, a novel end-to-end trainable convolutional neural network architecture called ClarifyNet is proposed for single image dehazing. ClarifyNet utilizes low-pass and high-pass filters to extract different types of information and employs a shared-encoder and multi-decoder model structure. By utilizing a weighted loss function, complementary features are extracted and propagated. Experimental results show that ClarifyNet achieves high scores on multiple datasets.
JOURNAL OF SYSTEMS ARCHITECTURE
(2022)
Article
Mathematics, Applied
David Kubanek, Jaroslav Koton, Jan Jerabek, Darius Andriukaitis
Summary: The formula of the all-pole low-pass frequency filter transfer function of the fractional order is presented in this paper for implementation by non-cascade multiple-feedback analogue structures. An optimization algorithm is used to approximate the target Butterworth low-pass magnitude response, and interpolated equations for computing the transfer function coefficients are provided. Additionally, an example of transforming the fractional-order low-pass to a high-pass filter is presented and verified through simulation.
FRACTIONAL CALCULUS AND APPLIED ANALYSIS
(2021)
Article
Engineering, Electrical & Electronic
K. R. Sreelekha, T. S. Bindiya
Summary: This paper discusses 2D FIR filter structures that achieve improved circularity and variable bandwidth without restructuring. The P3 transformation and two different methods are used to design circular filters with better circularity, less complexity, and variable bandwidth.
DIGITAL SIGNAL PROCESSING
(2023)
Article
Engineering, Electrical & Electronic
Adriana C. Sanabria-Borbon, Edgar Sanchez-Sinencio
Summary: This work discusses the synthesis and design methodology of high-order and frequency-tunable low-pass active-R filter architectures for multi-standard wireless applications. The filters presented in this work have the largest tuning range without linearity degradation and the smallest area per tuning range ratio, with competitive FoM when operating at high frequencies.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
(2021)
Article
Engineering, Electrical & Electronic
Yang Wang, Pengfei Chen, Jing Yong, Wilsun Xu, Shuangting Xu, Ke Liu
Summary: In recent years, the use of passive filters in power systems has increased due to the widespread use of power electronic devices. However, the design of filters, especially high-pass filters, has not been well addressed. This paper analytically investigates three types of high-pass filters and provides deep insights into their characteristics. The research results are universal and applicable to different applications. This study guides the design of filter packages and helps designers evaluate the design results.
IEEE TRANSACTIONS ON POWER DELIVERY
(2022)
Article
Computer Science, Information Systems
E. Yilmaz, M. Ucuncu
Summary: In this study, a low-pass filter with coaxial transmission lines is designed and produced to suppress the second harmonic of the 4.4-6 GHz C-Band signals. The design is based on an 11th order Chebyshev low-pass filter prototype and capacitors and inductors as lumped elements. The manufactured filter has a cutoff frequency of 6 GHz and a sharp suppression of about 45 dB at the stopband of 9 GHz, showing close similarity with the designed filter.
Article
Automation & Control Systems
Milad Alizadeh, Majid M. Moghaddam, S. Hassan HosseinNia
Summary: This paper presents a nonlinear low-pass filter with significantly less phase lag than linear and some nonlinear filters. The filter's gain response in the pass-band is near 0 dB, and the noise attenuation rate is -40 dB/dec, with the phase lag three times lesser compared to a 2nd order Butterworth filter. The proposed filter outperforms linear and nonlinear filters in case of white, blue, or purple noise, and its effectiveness is validated in a precision motion control system simulation.
Article
Automation & Control Systems
Jozef Wiora
Summary: This study introduces a new analogue filter for attenuating impulses in one-dimensional signals, with exponentially weighted old samples. Simulations demonstrate that these filters achieve steady states faster than typical low-pass filters, making them particularly useful in impulse suppression.
Article
Computer Science, Information Systems
San-Fu Wang, Hua-Pin Chen, Yitsen Ku, Ming-Xiu Zhong
Summary: This paper presents a method of realizing voltage-mode filter structures through analytical synthesis, which can simultaneously achieve high-pass, band-pass, and low-pass filter functions. By adjusting parameters, resonance frequency and quality factor can be independently adjusted, and a quadrature oscillator can be constructed.
Article
Engineering, Electrical & Electronic
Naci Pekcokguler, Dominique Morche, Andreas Burg, Catherine Dehollain
Summary: A low power receiver architecture is proposed to monitor the 2.4 GHz ISM band for communication standards such as WLAN, ZigBee, and BLE. The architecture includes a widely tunable Gm-C CBPF, achieving a frequency shift of +/- 60MHz and a bandwidth range of 5-40MHz. The power consumption ranges from 6.7 mu W to 99.2 mu W.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
(2023)
Article
Engineering, Biomedical
Alessio Tamborini, Morteza Gharib
Summary: This study demonstrates the improved signal quality of cuff-based pulse waveform acquisition (CBPWA) devices by implementing passive pneumatic low-pass filters (pLPF). The study shows that the use of pLPF in CBPWA improves the reliability and signal resolution of the devices.
ANNALS OF BIOMEDICAL ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
Liguo Zhou, Zhihe Long, Quanyuan Feng, Qiuyan Jin, Yongwei Li
Summary: A channel-continuous triplexer with multiple transmission zeros has been designed and implemented, achieving improved out-of-band suppression and roll-off rate. The experimental results demonstrate excellent performance of the triplexer in a specific frequency range.
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
(2022)
Article
Neurosciences
Petyo Nikolov, Shady S. Hassan, Alfons Schnitzler, Stefan J. Groiss
Summary: In this study, MEP amplitudes were significantly higher at 10 and 20 Hz with high pass filter settings compared to 100 Hz, but SNR did not differ among HPF settings. An active notch filter significantly improved SNR, indicating that higher HPF above 50 Hz may reduce noise and notch filter usage may enhance SNR.
FRONTIERS IN NEUROSCIENCE
(2021)
Article
Mathematics, Interdisciplinary Applications
Shutong Liu, Zhongkui Sun, Yuchen Miao, Nannan Zhao, Wei Xu
Summary: In this paper, the role of the low-pass filter in a ring network is investigated. It is found that the low-pass filter can induce and enhance the appearance of explosive nontrivial amplitude death behavior, and the cutoff frequency of the low-pass filter can be adjusted to control induced explosive behaviors and multistability. This study is of great importance in widening our understanding of explosive transitions in filter-based diffusively coupled biological and engineering systems.
CHAOS SOLITONS & FRACTALS
(2023)
Article
Engineering, Electrical & Electronic
Marco Cavallaro, Germano Nicollini
Summary: This paper presents a low-power, high-performance 2nd-order complex band-pass filter with high gain and bandwidth, implemented in CMOS technology.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
(2021)