Notch Filter Serves GSM Sites

Jan. 10, 2013
A high-Q notch filter screens unwanted signals from GSM cellular communications lines.

Model AS816N335 is a notch filter from Anatech Electronics with high quality factor (Q), designed for GSM cellular communications applications at 800 MHz. It features extremely sharp transitions from the passband to the stopbands, with better than -70 dBc stopband rejection of unwanted signals. The filter is suitable for use in both indoor or outdoor cellular base stations. It has a notch center frequency of 816.5 MHz, notch of 816 to 817 MHz, low-side passband beginning at 809 MHz, and high side passband beginning at 821 MHz. Return loss in the passband is at least 18 dB. The filter, which is supplied with female Type-N connectors, measures 17.2 x 3.1 x 2.2 in.

Anatech Electronics, 70 Outwater Ln., Garfield, NJ 07026; (201) 772-4242, e-mail: [email protected],

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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