A frequency-selective surface (FSS) is any thin, repetitive surface (such as the screen on a microwave oven) designed to reflect, transmit or absorb electromagnetic fields based on the frequency of the field. In this sense, an FSS is a type of optical filter or metal-mesh optical filters in which the filtering is accomplished by virtue of the regular, periodic (usually metallic, but sometimes dielectric) pattern on the surface of the FSS. Though not explicitly mentioned in the name, FSS's also have properties which vary with incidence angle and polarization as well - these are unavoidable consequences of the way in which FSS's are constructed. Frequency-selective surfaces have been most commonly used in the radio frequency region of the electromagnetic spectrum and find use in applications as diverse as the aforementioned microwave oven, antenna radomes and modern metamaterials. Sometimes frequency selective surfaces are referred to simply as periodic surfaces and are a 2-dimensional analog of the new periodic volumes known as photonic crystals. Many factors are involved in understanding the operation and application of frequency selective surfaces. These include analysis techniques, operating principles, design principles, manufacturing techniques and methods for integrating these structures into space, ground and airborne platforms. (Wikipedia).
Introduction to Frequency Selective Filtering
http://AllSignalProcessing.com for free e-book on frequency relationships and more great signal processing content, including concept/screenshot files, quizzes, MATLAB and data files. Separation of signals based on frequency content using lowpass, highpass, bandpass, etc filters. Filter g
From playlist Introduction to Filter Design
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The tool that engineers use to design buildings in earthquake zones | The response spectrum
Earthquakes are one of the most destructive forces of nature. They could induce substantial movement in the ground, which results in the development of excessive forces in structural components, resulting in their failure. The intent of the analysis is to somehow predict the **maximum resp
From playlist Summer of Math Exposition Youtube Videos
http://AllSignalProcessing.com for more great signal processing content, including concept/screenshot files, quizzes, MATLAB and data files. Representation of wide sense stationary random processes in the frequency domain - the power spectral density or power spectrum is the DTFT of the a
From playlist Random Signal Characterization
Get a Free Trial: https://goo.gl/C2Y9A5 Get Pricing Info: https://goo.gl/kDvGHt Ready to Buy: https://goo.gl/vsIeA5 View test data, filter out noise, and remove offsets. For more videos, visit https://bit.ly/3MysqA1
From playlist Control System Design and Analysis
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In this video, we learn about filtering which enables us to manipulate the frequency content of a signal. A common filtering application is to preserve desired frequencies and reject the unwanted content. The learning objectives are to: 1) review the filtering concept using Fourier series
From playlist Fourier
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This chemistry video tutorial explains how the photoelectric effect works. It also explains how to use the work function of metals to calculate the threshold frequency and maximum wavelength of light necessary to eject an electron off the surface of an active metal. In addition, it expla
From playlist New AP & General Chemistry Video Playlist
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The Future of Gravitational-Wave Astronomy URL: http://www.icts.res.in/discussion_meeting/fgwa2016/ DATES: Monday 04 Apr, 2016 - Friday 08 Apr, 2016 VENUE : Ramanujan Lecture Hall, ICTS Bangalore DESCRIPTION: On 2016 February 11, two major international collaborations jointly announce
From playlist The Future of Gravitational-Wave Astronomy
GCSE Maths AQA June 2019 Paper 2 Higher Tier Walkthrough
A complete walk through of AQA GCSE Maths June 2019 Higher Tier - Paper 2 calculator. Help revise for the 8300 new specification 9-1 mathematics exams and your mock. This walkthrough tutorial has full solutions to each question, so you can use it like a mark scheme. Choose to watch th
From playlist AQA GCSE Maths Practice Papers - All Paper Sets
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MIT 5.61 Physical Chemistry, Fall 2017 Instructor: Professor Robert Field View the complete course: https://ocw.mit.edu/5-61F17 YouTube Playlist: https://www.youtube.com/playlist?list=PLUl4u3cNGP62RsEHXe48Imi9-87FzQaJg This is the first of two lectures on spectroscopy and dynamics. Licen
From playlist MIT 5.61 Physical Chemistry, Fall 2017
Physics - Optics: Circular Aperture - Angle of Resolution (6 of 6) Rayleigh's Criterion
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From playlist PHYSICS 61 DIFFRACTION OF LIGHT
Lec 15 | MIT 5.74 Introductory Quantum Mechanics II, Spring 2009
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From playlist MIT 5.74 Introductory Quantum Mechanics II, Spring 2009
Institute for Advanced Study Astrophysics Seminar Topic: Fireball in Fast Radio Bursts Speaker: Kunihito Ioka Affiliation: Yukawa Institute for Theoretical Physics, Kyoto University Date: October 06, 2022 Fast radio bursts (FRBs) are the brightest radio transients in the universe. Since
From playlist Astrophysics Seminar
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ORGANIZERS: Amit Apte, Soumitro Banerjee, Pranay Goel, Partha Guha, Neelima Gupte, Govindan Rangarajan and Somdatta Sinha DATES: Monday 23 May, 2016 - Saturday 23 Jul, 2016 VENUE: Madhava Lecture Hall, ICTS, Bangalore This program is first-of-its-kind in India with a specific focus to p
From playlist Summer Research Program on Dynamics of Complex Systems
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PROGRAM : PREPARATORY SCHOOL ON POPULATION GENETICS AND EVOLUTION ORGANIZERS : Deepa Agashe and Kavita Jain DATE & TIME : 04 February 2019 to 10 February 2019 VENUE :Ramanujan Lecture Hall, ICTS Bangalore The 2019 preparatory school on Population Genetics and Evolution (PGE2019) will be
From playlist Preparatory School on Population Genetics and Evolution
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On February 29, 2016, Dr. Tuljapurkar presented this talk on Stanford campus at the annual CEHG symposium. CEHG is Stanford's Center for Computational, Evolutionary and Human Genomics.
From playlist Stanford CEHG Speaker Playlist
A. Murat Eren (Meren): "Integrating de novo protein biochemistry and metagenomics to tease apart..."
Emerging Opportunities for Mathematics in the Microbiome 2020 "Integrating de novo protein biochemistry and metagenomics to tease apart evolutionary processes acting on environmental microbial populations" A. Murat Eren (Meren), University of Chicago Abstract: High-throughput sequencing
From playlist Emerging Opportunities for Mathematics in the Microbiome 2020
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Liwei Xu University of Electronic Science and Technology of China, China
From playlist 2018 Modeling and Simulation of Interface Dynamics in Fluids/Solids and Their Applications