Novel Band Pass Filter Using Coupled Line For WLAN Applications
A novel planar band-pass filter design using edge coupled micro-strip line filter is presented for Wireless local
area network (WLAN) applications. The filter, comprising three micro-strip coupled lines and taper, capable of generating a
resonant mode with good impedance matching conditions. The simulated and measured results have a midband at 5GHz and
bandwidth of 0.150GHz. Passband insertion and return loss is specified to be <5dB and >10dB respectively, covering the
WLAN bands and insertion loss was large, which was 3.67 dB at centre frequency of filter.