A family of tuned microwave absorbers can be used to attenuate unwanted signals at microwave frequencies. Different types of absorbers are available for both narrowband and broadband applications. By targeting discrete frequencies between 1 GHz and 18 GHz (such as 10.9 GHz), for example, these absorber materials deliver an average attenuation between 20 and 30 dB. They convert the unwanted electromagnetic (EM) energy into heat by means of high insertion loss or high reflection. The magnetically and dielectrically loaded absorbers are easy to install, economical, and highly effective. They can be customized for a target frequency at no additional charge.
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About the Author
Jack Browne
Technical Contributor
Jack Browne, Technical Contributor, has worked in technical publishing for over 30 years. He managed the content and production of three technical journals while at the American Institute of Physics, including Medical Physics and the Journal of Vacuum Science & Technology. He has been a Publisher and Editor for Penton Media, started the firm’s Wireless Symposium & Exhibition trade show in 1993, and currently serves as Technical Contributor for that company's Microwaves & RF magazine. Browne, who holds a BS in Mathematics from City College of New York and BA degrees in English and Philosophy from Fordham University, is a member of the IEEE.