Tunable Microwave Filter as Part of the SDR System

The concept of software-defined radio (SDR) has important advantages over traditional radio systems and is successfully used in many areas of the information infrastructure. Unfortunately, not all components of modern communication systems allow the user to change their parameters programmatically with the same efficiency. In particular, we are talking about microwave filters - important elements of the input circuits that determine the sensitivity and selectivity of radio receivers. The use of narrow-band tunable filters will reduce the influence of neighboring channels, possible interference on the useful signal, increase the communication range of the UAV with ground systems. This article is devoted to the study of the possibility of software restructuring of microwave filters on spiral resonators.