Direct Antenna Frequency Hopped M-FSK Modulation with Time-Modulated Arrays

• Published in: IEEE antennas and wireless propagation letters Vol. 23; no. 2; pp. 1 - 5
• Main Authors: Maneiro-Catoira, Roberto, Bregains, Julio, Garcia-Naya, Jose A., Castedo, Luis
• Format: Journal Article
• Language: English
• Published: New York IEEE 01-02-2024; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Amplitude modulation; Antenna arrays; Antennas; beamsteering; Dams; direct antenna modulation; frequency hopping; Frequency shift keying; frequency shift keying modulation; Harmonic analysis; Insertion loss; Modulation; Performance measurement; Symbols; Time-frequency analysis; Time-modulated arrays
• ISSN: 1536-1225; 1548-5757
• DOI: 10.1109/LAWP.2023.3330435

We present an innovative approach that simultaneously enables direct antenna frequency hopped M-ary frequency shift keying (DAFH-MFSK) modulation and beamsteering through the use of time-modulated arrays (TMAs). The distinctive feature of our approach lies in the modulation of the TMA excitations with binary periodic sequences which can be easily frequency-adjusted and time-delayed to simultaneously allow for DAFH-MFSK direct antenna modulation and beamsteering. Notably, our TMA proposal offers a distinct advantage over conventional architectures in terms of performance metrics, including reduced insertion losses and enhanced phase resolution for beam steering, while also simplifying hardware complexity.