What is basic antenna theory primarily concerned with?

Basic antenna theory is fundamentally concerned with the principles of signal transmission and reception. This encompasses understanding how antennas work to convert electrical energy into radio waves for transmission and how they receive those waves and convert them back into electrical energy. The core concepts include radiation patterns, gain, polarization, and impedance, which are critical for effectively sending and receiving signals in various communication scenarios.

While knowledge of different types of antennas, their designs for specific frequency ranges, and the construction of portable systems are important aspects of antenna technology, they build upon the foundational understanding of how antennas operate in terms of signal behavior and the physical laws governing electromagnetic waves. Without a grasp of the basic principles of signal transmission and reception, one cannot effectively engage with these practical applications in antenna technology.