57–64 GHz seven-pole bandpass filter Substrate Integrated Waveguide (SIW) in LTCC

This paper presents the design and characterization of a Substrate Integrated Waveguide (SIW) filter, with a large bandwidth of 7 GHz, designed to cover the unlicensed frequency band, 57-64 GHz. The filter, a seven-pole Chebyshev is integrated in Low-Temperature Co-fired Ceramic (LTCC). It is characterized by a measured bandwidth of 11.8% around a central frequency of 59.1 GHz. It presents a low passband insertion loss of 2.4 dB and high stop band insertion loss in the lower and higher band, respectively 50 dB and 30 dB. The filter has a compact size of 9450 × 2100 × 200 μm
³
.