Diplexer Screens CATV Systems

March 14, 2013
A miniature, surface-mount diplexer filter is designed for CATV applications through 1 GHz.

Model MAFL-011013 is a 75-Ω broadband diplexer filter for cable-television (CATV) applications, direct-broadcast-satellite (DBS), and cable-modem applications. It is usable over the frequency bands of 5 to 42 MHz and 54 to 1000 MHz, with typical insertion loss of only 0.5 dB in either frequency band. Signal isolation is typically 55 dB from 5 to 37 MHz; 50 dB from 54 to 100 MHz; 55 dB from 100 to 600 MHz; and 50 dB from 600 to 1000 MHz. Return loss is typically 16 dB across its full frequency range of operation. The diplexer, which is rated for maximum RF power of 250 mW and DC current of 30 mA, has an operating temperature range of -40 to +85°C. The RoHS-compliant component, which is supplied in an 11-pin surface-mount package, is available in tape-and-reel format for high-volume-production applications.

M/A-COM Technology Solutions, Inc., 100 Chelmsford St., Lowell, MA 01851; (800) 366-2266, (978) 656-2500, www.macomtech.com.

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.

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