T/R Lens Amplifier Antenna Arrays for X-band and Ka-band

摘要

Antennas integrated with active circuitry are usually referred to as active antenna arrays. The integration can be done at different levels, depending on the goal and application. For example, a low-noise amplifier (LNA) is often integrated directly with the antenna for reduced loss and therefore decreased noise figure. Another example is the integration of power amplifiers with antenna arrays to achieve spatial power combining. The focus of this paper is the integration of bidirectional amplifiers with each element in an antenna array, for transmit-receive (T/R) applications.