Phasor Addition in Array Antennas
This text discusses the use of phasor addition to analyze antenna arrays.
The text describes how the array factor is calculated for a linear dipole array, and how the gain of the array is related to the angle of radiation.
The text also discusses the concept of sidelobes, and how they can be minimized by adjusting the element spacing in the array.
Questions
- What is phasor addition?
- How is the array factor calculated for a linear dipole array?
- How is the gain of an antenna array related to the angle of radiation?
- What are sidelobes?
- How can sidelobes be minimized?
Answers
- Phasor addition is a method for combining the waves emitted from multiple antennas to produce a desired radiation pattern.
- The array factor is the sum of the phasors emitted from each antenna in the array.
- The gain of an antenna array is proportional to the square of the magnitude of the array factor.
- Sidelobes are the less intense radiation patterns that appear around the main lobe of an antenna array.
- Sidelobes can be minimized by adjusting the element spacing in the array.