1. Federal Communications Commission (FCC) Revision of part 15 of the commission's rules regarding ultra-wideband transmission system 2002
2. Mini-Special Issue on Ultra-Wideband IEEE Trans Microwave Theory Tech 52 2004
3. Aperture compensation technique for innovative design of ultra-broadband microstrip bandpass filter;Zhu;IEEE MTT-S Int. Dig.,2000
4. Broadband and compact multi-mode microstrip bandpass filters using ground plane aperture technique;Zhu;IEE Proc. Microwave Antennas Propagation,2002
5. On the design of novel compact broad-band planar filters;Menzel;IEEE Trans. Microwave Theory Tech.,2003