Each TES sensor is connected in series with an LC tuned circuit and biased with an alternating current at a selected frequency, ranging from 380 kHz to 1 MHz.The signal from each sensor amplitude-modulates its respective bias current.
It could be concluded that there existed a good linear relationship between the summation of frequency amplitude in the selected frequency range and the characteristics parameters under the same engine speed working condition.
Indeed, many other antennas were investigated, but the input impedance of a spiral antenna is predominantly real over a wide bandwidth (Figure 6) [8]. Figure 6 Antenna impedance (ohms) for the selected frequency range.
The predicted values correlate well with the target values in the selected frequency range.
In the selected frequency range, the output power and gain are greater than conventional helix.
The inputs are designed for selected frequency ranges, and therefore do not require a priori models.
Although the selected frequency ranges of these features did not cover a broad range, they might reflect the previous findings.
The results indicate how the disc-brake rotor can be modified to reduce the squeal propensity in selected frequency ranges.
The peak density results indicate that disrupted ductal architectures produce higher peak densities in selected frequency ranges as compared to normal breast tissue.
Values of each parameter at 11 selected frequencies ranging from 0.5 HZ to 5.5 HZ were exhibited as curve graphs.
