This work addresses geometry parameter scaling of multi-band antennas for Internet of Things applications. The presented approach is comprehensive and permits re-design of the structure with respect to both the operating frequencies and material parameters of the dielectric substrate. A two-step procedure is developed with the initial design obtained from an inverse surrogate model constructed using a set of appropriately prepared reference points, and the final design identified through an iterative correction procedure. The latter is necessary in order to account for limited accuracy of the surrogate. The proposed approach is validated using a dual-band microstrip patch antenna scaled over wide ranges of operating frequencies (1.5 GHz to 2.5 GHz for the lower band, and 5.0 GHz to 6.0 GHz for the upper band), substrate thickness (0.7 mm to 1.5 mm), and substrate permittivity (2.5 to 3.5). The re-design cost corresponds to only up to three electromagnetic simulations of the antenna at hand. Reliability of the process is confirmed through experimental validation of the fabricated antenna prototypes.
Authors
Additional information
- DOI
- Digital Object Identifier link open in new tab 10.1002/jnm.2723
- Category
- Publikacja w czasopiśmie
- Type
- artykuły w czasopismach
- Language
- angielski
- Publication year
- 2020
