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cutoff frequency |
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cutoff frequency [′kət‚ȯf ‚frē·kwən·sē] (electronics) A frequency at which the attenuation of a device begins to increase sharply, such as the limiting frequency below which a traveling wave in a given mode cannot be maintained in a waveguide, or the frequency above which an electron tube loses efficiency rapidly. Also known as critical frequency; cutoff. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Formed on a large diameter silicon substrate, the gallium nitride high electron mobility transistor (GaN-HEMT) achieves a world record transconductance rating of 350mS/mm, a maximum oscillation frequency of 115GHz and a current gain cut off frequency of 56GHz, which are all comparable to figures achieved on conventional silicon carbide (SiC) substrates. The KNA21 EMI filter features a cut off frequency of 400MHz and attenuation range of 800MHz to 2. Low pass frequency (LPF) circuitry is built-in, with a cut off frequency of 7 kilohertz (KHz), to prevent harmless vibration from interfering with disk drive operation. |
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