High Pass

Defines a high pass filter with the parameters shown in the configuration window above. A high pass filter passes high frequency signals with minimal attenuation and attenuates (reduces the amplitude of) signals below the cutoff frequency. Also shown is a plot of a high pass filter in EMIT.

Noise Temperature (K): Noise power added by the filter.

Insertion Loss: Insertion loss defines the magnitude of the attenuation of signals in the pass band and is specified in dB. The pass band of the high pass filter is defined as all frequencies above the minimum pass band frequency.

Stop Band Attenuation: Stop band attenuation defines the magnitude of the attenuation for signals with frequencies lower than the maximum stop band frequency. The attenuation of signals with frequencies between the maximum stop band frequency and the minimum pass band frequency is determined by calculating the slope between these two points and assuming a linear roll-off.

Max Stop Band: The max stop band defines the maximum frequency of the stop band. All frequencies below the max stop band value are attenuated by an amount equal to the stop band attenuation.

Min Pass Band: The min pass band defines the minimum frequency of the pass band which is also commonly referred to as the filter's cutoff frequency.