0.1 THz Linear Group-Delay Engineered Transmission Line All-Pass Network with LTCC Substrate

A linear group delay engineered non-commensurate transmission line all-pass network using only two lengths coupled-line and low temperature co-fired ceramic (LTCC) material as substrate for analog signal processing applications is presented. The structure is obtained by interconnecting adjacent coupled-line to form two-port network with stripline technology. The non-commensurate structure can realized arbitrary linear group delay with a slope of 0.2 ns/GHz around 0.1 THz, which can be applied to time dilation and Fourier transforming. The research results of this paper are of great significance.