DEVELOPMENT OF A SWITCHING PHASE SWITCHING ACTIVE PHASED ANTENNA ARRAY

In this article, the most relevant to date antennas are considered - phased antenna arrays (PAA), which constructively consist of a system of a large number of individual emitters connected via a feeder line to phase shifters. The phase shifter is one of the main nodes in the PAA, forming the necessary phase shift. Further development of the PAA led to the creation of active phased antenna arrays (A PAA), where a power amplifier, generator or frequency converter is connected to each antenna array antenna (AA) or to their group. The advantages of A PAA: high level of radiated power, high reliability, work in a wide operating frequency band, the main disadvantages are the construction complexity and high cost of the antenna system. There are two main types ofphase shifters: analog and discrete. The paper discusses the process of developing a switching phase shifter for the layout of a four-element active phased array antenna. Switching phase shifters are discrete type phase shifters. Antenna beam control is reduced to the simplest operations of switching on or off delay lines. The main advantages of this type of switch are high efficiency, high reliability, simplicity of design, and stability of characteristics. In the circuit of each radiator antenna layout contains 2 switches. A switch with the HMC241AQS16 marking was selected in operation, which switches to 4 directions. The switching module is made using stripline technology. The topology of the switching module is made in the «Sprint-Lay-Out» circuit tracing program. This program allows you to design printed circuit boards of small and medium complexity, and is also easy to use.

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