Abstract
This work reports on an efficient design methodology for realizing hybrid filter-antenna subsystems. Designing a filter-antenna subsystem in the case of complex multimode filter is not straightforward. The coupling of the antenna with a multimode filter depends upon several uncorrelated parameters. An efficient design methodology is proposed which can address these complex problems. The work focuses on the characterization of radiating and filtering elements and then proposes a reliable model, which is derived mathematically as well as from rigorous statistical analyses, which can then be used for designing hybrid filter-antenna structures such as a hybrid DRA codesigned with a SIW based multimode filter. A highly compact filter-antenna subsystem has been designed employing the proposed methodology, and the measured results validate the proposed design technique.
Highlights
High miniaturization trends in wireless communication systems are inspiring researchers to produce compact and costeffective components with easy integration in system-inpackage solutions
In RF front-end modules, the filter and the antenna are realized separately and are connected at 50-ohm reference impedance. This conventional technique limits the degree of freedom in the design of both the filter and the antenna and limits the performance of the overall filter-antenna subsystem
In [3], a nonplanar structure has been proposed in which a horn antenna is covered with a Frequency Selective Surface (FSS) created using Substrate Integrated Waveguide (SIW) cavities to realize a filter-antenna module
Summary
High miniaturization trends in wireless communication systems are inspiring researchers to produce compact and costeffective components with easy integration in system-inpackage solutions. In RF front-end modules, the filter and the antenna are realized separately and are connected at 50-ohm reference impedance. This conventional technique limits the degree of freedom in the design of both the filter and the antenna and limits the performance of the overall filter-antenna subsystem. Filter-antenna subsystem for Wi-Fi application is achieved by integrating a step impedance resonator filter with a dual band hybrid dielectric resonator antenna (DRA) and monopole antenna [9]. The antenna will be characterized based on the operating mode and excitation system (taking into account the complex multimode filter), from which a reliable model will be extracted, and a filter-antenna subsystem will be designed exploiting the proposed methodology and the measured results will be discussed
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