Final answer:
Before simulating an antenna design, calculations for its parameters are necessary, including the antenna's VSWR and radiation patterns, and ensuring impedance matching to 50 Ohm. For the given examples, frequencies of antennas with lengths of 1.94 m and 0.753 m are approximately 77.32 MHz and 199.20 MHz, respectively.
Step-by-step explanation:
For the design of an antenna such as a biquad yagi antenna operating at a frequency of 2.4 GHz, it is essential to start with calculating parameters like the VSWR (Voltage Standing Wave Ratio), radiation patterns in E (Electric) and H (Magnetic) planes and ensuring that the antenna is matched to 50 Ohm impedance for optimal performance before moving on to simulation steps.
Using the principle that the length of the antenna should be a fraction of the wavelength (λ) it's intended to receive, we can calculate the frequencies for antennas with lengths of 1.94 m and 0.753 m respectively. The formula to calculate the frequency (f) given the wavelength (λ) and the speed of light (c) is f = c / λ. Since these are half-wavelength antennas, we double the lengths to find the full wavelength before calculating the frequencies. For a length of 1.94 m, the full wavelength is 3.88 m, which gives us a frequency of approximately 77.32 MHz. For a length of 0.753 m, the full wavelength is 1.506 m, giving us a frequency of approximately 199.20 MHz.
When conducting simulations with tools such as Matlab Antenna Toolbox, the design can be tested against these calculated parameters to verify its performance. Matching the antenna to 50 Ohm is crucial to minimize reflections and ensure maximum power is transmitted or received by the antenna.