The phrase "as a function of frequency at" is correct and usable in written English.
It is typically used in scientific or technical contexts to describe how a particular variable changes with respect to frequency.
Example: "The response of the system can be analyzed as a function of frequency at various input levels."
Alternatives: "in relation to frequency at" or "depending on frequency at".
The conductivity and dielectric measurements are carried out on these films as a function of frequency at various temperatures.
a, The THz refractive index of the graphene film as a function of frequency at various peak electric fields for the THz pump at 0.3 THz, showing reduction in the refractive index with both frequency and exciting field strength.
Detailed ion dynamics and segmental relaxation of electrolyte complex have been analyzed by the impedance data as a function of frequency at varying temperatures.
When the linear viscoelastic region was confirmed, frequency sweep measurements were performed as a function of frequency at a constant stress.
The increasing complexity of the amplitude enhancements as a function of frequency at the highest VLF frequencies is due to the amplitude of the second-order TM mode becoming comparable with that of the first-order TM mode at the receiver.
(d) Extracted ac conductance over angular frequency Gp/ω as a function of frequency f at various gate voltages.
(a) Capacitance as a function of frequency measured at various gate voltages.
The loss factor of viscoelastic materials as a function of frequency has at least one peak.
The corresponding response profile shows a monotonous increase as a function of frequency, starting negative at ¼ kHz and ending positive at 8 kHz.
Dielectric constant and dielectric loss frequency of CZ core/shell NPs as a function of frequency range (50 Hz–5 MHz) at room temperature are shown in Fig. 5.
Fig. 3 Example of the SPAC coefficients as a function of frequency for different station distances at the site T22.
