Zayniyev, Damir; Budimir, Djuradj (Wireless Communications Research Group, University of Westminster, 115 New Cavendish Street, London W1W 6UW, United Kingdom)
In this paper we present the possibility to integrate microstrip bandpass filter and patch antenna in order to suppress spurious harmonics of antenna. Compact microstrip pseudo-interdigital stepped impedance bandpass filter with improved stopband was designed. It was used to replace the microstrip line in inset microstrip-line fed patch antenna. As a result of integration full suppression of first two spurious harmonics of antenna was achieved.