A compact low insertion loss bandpass filter based on meandered self-coupled ring resonatorChing-Chien Cheng, Kong-Xin Cheng, Huang-Kuang Kung, Chin-Yu Wang and Yng-Huey JengMATEC Web Conf., 123 (2017) 00016DOI: https://doi.org/10.1051/matecconf/201712300016