This paper presents the design and implementation of a waveguide low-pass filter using Anten’it bricks. The filter is based on a 5th-order Chebyshev prototype with a 0.5 dB ripple. The design methodology includes impedance transformations, dimension calculations using Octave, and simulation verification using CST Microwave Studio. The fabricated filter’s measured results are compared with simulations, demonstrating satisfactory performance in terms of insertion loss, return loss, and stopband attenuation.

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