Design of a reconfigurable receiver front-end for spectrum sensing****

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With the widespread advancement in artificial intelligence technology, the wireless spectrum is being populated with various signals that are transmitted between remote platforms. In particular, drones can utilize different spectral bands to communicate with command posts and between each other. The ISM bands are often utilized by the drones because the spectrum is free and the bands can serve different applications, because they have different propagation and interference characteristics. In this project, the client is seeking to improve its anti-drone products and services. For surveillance and protection, it is of prime interest to monitor the activity of the remote devices, and in this work spectrum sensing is proposed. For this purpose, a low-cost low-complexity software defined radio will be developed to sense and disrupt activity in the five standard ISM bands. The transceiver will have the capability to target signals coming from different directions of interest. One of the major challenges to achieve this, is the design of a wideband front-end that can sense and transmit signals of interest over a wide frequency range. The specific objectives of the project are to define an antenna array structure to provide angular selectivity, and to develop a low-complexity multi-band RF front-end that can target signals transmitted from as long as 4 km away from the sensor. At the end of the project, a small form factor, wideband front-end architecture will be modelled, and documented. Also, the performance of the front-end chain will be tested in realistic conditions, in an outdoor environment. ******