volume | PIER Journals

Abstract

This paper proposes an asymmetric miniaturized single-layer bandpass filter based on interdigital capacitors and microstrip inductors with miniaturization and a wide bandwidth. It is composed of three series of LC resonator pairs and two parallel LC resonator pairs, and this asymmetric structure enhances design flexibility. The measured results indicate that the center frequency is 1.48 GHz, and the passband covers 0.88~2.08 GHz, with a return loss better than 12.6 dB, whereas the insertion loss is less than 0.58 dB. The physical size is 31 mm × 13 mm, which is smaller than that of traditional LC filters.

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Dr. Juntao Cao

Dr. Xiaoying Zuo

Ms. Mengxin He

Dr. Yajian Li

Dr. Jiapei Dong