Modeling of real-shaped LTCC stripline structure having sharpened edges and embedded pores

A real-shaped LTCC stripline model including sharpened edges and embedded pores was proposed and simulated using the high frequency simulator software, HFSS. These structural defects occur when LTCC process is used in real fields. The pores made the characteristic impedance of the stripline increase, and /spl alpha/ and /spl beta/ decrease in the range higher than 6% of corresponding initial values. 6% of /spl beta/ could have an important meaning for circuit designers. Sharpened edge made the characteristic impedance and /spl alpha/ increase, while did not affect /spl beta/.