In the frequency band from 10 Hz up to 2 MHz the frequency cutoff
appears when the formula below applies:
The APE has a measureable full-current (370 A @ 270 VDC) -3 dB cutoff frequency at 20 kHz and a small signal (15 A) -3 dB frequency cutoff
at 40 kHz .
As the number of filter orders increases, the sharper frequency cutoff slope is obtained.
However, as shown in Figure 14(b), the proposed BPF has an advantage in size reduction with a reasonable frequency cutoff characteristic.
A frequency cutoff is easily imposed on the Fourier spatial transform (see Figure 1).
We could compare this composite spatial frequency spectrum with the spatial frequency spectrum of a calculated interference pattern, up to the same frequency cutoff, for a given hypothesis (e.g.
Active filtering follows the mixer and consists of filters with a high frequency cutoff
of 275 kHz.
The low frequency cutoff
is 2.5MHz, providing improved jitter performance.
The sharp lower frequency cutoff
at 1.8 kHz argues that nowhere along the propagation route to the spacecraft did the electron density exceed one per 25 cubic cm; otherwise the radio energy would have been blocked (for example, solar-wind electrons are too dense closer in for it to carry all the way to Earth).
It involves summing a direct voltage with a delayed voltage that traverses a single transmission line, and provides an inherent high frequency cutoff
that is invaluable in the monopulse radar application.
Because the high frequency cutoff
of these devices exceeds the measurement capability of conventional network analyzers, S-parameters at mm-wave frequencies are calculated by extrapolating from lower frequency, small signal models.
The value selected for the gate resistor R determines a low frequency cutoff
, below which the monolithic switch circuits power-handling capability will decrease.