Stub-tuned, proximity-fed, stacked patch antenna

摘要

A reduced weight, low profile, stacked patch antenna includes an 'active' antenna patch element, a 'parasitic' antenna patch element, and a tuning stub portion of a microstrip feed, which resonate at respectively different frequencies. The tuning stub is located adjacent to the active patch element, so that electromagnetic field energy associated with the tuning stub is coupled to the active and parasitic patches of the stacked patch structure, thereby creating a distributed resonance characteristic, having an augmented bandwidth compared with that of a conventional patch antenna. Manufacture of the stacked patch antenna is facilitated by the use of both a proximity feed and the interleaving of layers of adhesive material among the respective components of the stacked structure.