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Novel compact suspended substrate stripline filters in the Ku band are proposed. Two bandpass trisection filters with asymmetrical characteristics are presented. The use of meandered-line open-loop resonators allows a significant size reduction and either positive or negative cross coupling can be realized. The synthesis is based on the general folded cross-coupled network with parallel resonators and admittance inverters. The suspended substrate technology provides an excellent electrical performance and yields a high quality factor, thus making these filters very attractive for satellite communications systems.