Slow wave microstrip line: A quasi-elliptic low pass filter

Polyester‐based wearable bandpass microstrip filter

“…In wearable systems and devices, microstrip filters are essential components to select desired frequency bands or reject unwanted frequency bands. Different types of microstrip filter have been proposed in the literature 7–16 . Bindu and Mohanan 7 reported an ultra‐wideband (UWB) filter using stepped‐impedance resonators (SIRs) to control lower cut‐off frequency and interdigital linked lines with control of upper cut‐off frequency.…”

“…Zhang et al 12 elaborate use of a reformative stepped impedance resonator (SIR) and a defective ground structure (DGS)‐based microstrip low‐pass filter (LPF). Parameswaran and Raghavan 13 present a typical microstrip line‐based quasi‐elliptic low pass filter. Sharp roll off and broad stopband was obtained using modified 0° feed structure 14 .…”

“…Different types of microstrip filter have been proposed in the literature. [7][8][9][10][11][12][13][14][15][16] Bindu and Mohanan 7 reported an ultra-wideband (UWB) filter using stepped-impedance resonators (SIRs) to control lower cutoff frequency and interdigital linked lines with control of upper cut-off frequency. Singh et al 8 present use of three interdigital edges coupled microstrip lines, SIR open stub, and a RO4003C substrate to create a planar UWB bandpass filter from 3.1 to 10.6 GHz.…”