This work presents a third-order interdigital bandpass Butterworth filter designed to operate in the ISM band from 57 to 66 GHz. The project adopted an aluminum oxide (alumina) substrate, copper microstrip transmission lines and a coplanar waveguide (CPW) interface. We performed electromagnetic analysis in Ansys EM using the Finite Element Method (FEM). The filter presented return loss greater than 10 dB and insertion loss greater than 4.47 dB from 57.04 GHz to 65.45 GHz. We will fabricate the device using the Metallic-Nanowire-Membrane technology.

This work describes the design and analysis of a 4 × 4 Butler matrix for applications in the 60 GHz unlicensed frequency band. Each of the constitutive blocks that make up the network -hybrid coupler, crossover, and phase shifter -were designed to be compatible with metallic-nanowire-filled membrane manufacturing process and optimized separately. Simulations were conducted using Ansys HFSS and improvements to the devices' behaviours were achieved through parametric analysis.A complete design was obtained by connecting all primary devices and each output port was connected to a series patch antenna array. The complete Butler matrix analysis revealed a device that produces the expected phase distribution and radiation at the desired angles.

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This work explores a framework of numerical techniques to design a wideband TEM coaxial horn for millimeter waves operation. Firstly, aperture dimensions and flare angle were determined to avoid nulls in vertical radiation pattern at θ F < 55 o. Then, a transition to a 2.92mm connector and a dielectric support for the central conductor are proposed. To enhance electromagnetic performance, Genetic Algorithm (GA) was used to optimize the transition and support dimensions. To address the antenna performance, full-wave electromagnetic analysis based on Finite Element Method was employed. The designed model presented frequency bandwidth larger than 45% (25-40 GHz) with return loss greater than 20dB.