Investigation and Design of Microwave Receiver Protector for Meteorological Radar Applications

Abstract

Protective structures called microwave limiters can be built using microwaves. Microwave limiters protect against high-power microwave signals with protection circuit components called protector receiver circuits. An electro-magnetic receiver system is capable of processing signals at low amplitude levels. Because of this situation, circuit blocks with extreme sensitivity are required. Limiters are utilized to safeguard LNAs, as well as other sensitive circuit blocks, from high power signals. To be completely safe, the microwave device should not only be connected to a single point of connection, but it should also be kept away from outside sources of interference, such as leakage between transmitters and receivers or strong, intense pulses of a microwave signal emanating from a transmitter outside the room. It is very predictable to have a leak in a transmitter because the timing of the transmitted signal is known. However, a threat that comes from the outside is not predictable as the time of the threat cannot be predicted. Anytime outside threats impact the radar system, the system can be interrupted. In order to ensure the radar system's receiver channel is protected, a low response time high power microwave limiter must be used. In this paper, the investigation and design of the Microwave Receiver Protector (MRP) is detailed and analyzed. All the entire MRP proposal has been subjected to in-depth analysis using a software simulator. The microwave characteristics of the proposed MRP design have been demonstrated. This proposed MRP is demonstrated to offer excellent protection performance when applied to meteorological radar applications, and the power of the structure, both simulated and measured, can be analyzed to display a power reduction of up to 67.4% to reach the required protection performance