ABSTRACT
Antennas are one of the most important components responsible for the noise performance and power budget of systems. Bandwidth is an important specification for antennas, especially in frequency division duplexing (FDD) communication. Another critical specification for antennas is the realized gain. Conventional highgain antennas most often used in the high-frequency band are parabolic reflector antennas and waveguide antennas, which need a precise and complicated machining process, resulting in a high production cost. On the other hand, these antennas usually have large size and big weight, leading to high shipping expenses and heavy manpower expenditure on equipment installation and adjustment.
