MINIATURIZATION DESIGN OF FULL DIFFERENTIAL BANDPASS FILTER WITH COUPLED RESONATORS USING EMBEDDED PASSIVE DEVICE TECHNOLOGY | Zendy

Sung-Mao Wu | Zendy; Chun-Ting Kuo | Zendy; Pei-Yu Lyu | Zendy; Yu Li Shen | Zendy; Ching-I Chien | Zendy

Open Access

MINIATURIZATION DESIGN OF FULL DIFFERENTIAL BANDPASS FILTER WITH COUPLED RESONATORS USING EMBEDDED PASSIVE DEVICE TECHNOLOGY

Author(s) -

Sung-Mao Wu,

Chun-Ting Kuo,

Pei-Yu Lyu,

Yu Li Shen,

Ching-I Chien

Publication year - 2011

Publication title -

electromagnetic waves

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.437

H-Index - 89

eISSN - 1559-8985

pISSN - 1070-4698

DOI - 10.2528/pier11091404

Subject(s) - miniaturization , band pass filter , resonator , electronic filter topology , electronic engineering , differential (mechanical device) , filter (signal processing) , prototype filter , computer science , electrical engineering , engineering , low pass filter , aerospace engineering

This paper presents two full difierential bandpass fllters with small occupied areas. Both fllters are designed with the same basic structure which consists of two double coupled resonators with magnetic coupling. The resonators are stacked up and have the advantage of high coupling e-ciency, reducing the area. Nevertheless, in the basic structure, the insertion loss in the high stopband is above i10dB and therefore does not meet the requirement for bandpass fllter design. Thus, two solutions are introduced to form the proposed fllters. The flrst one integrates the ground plane, while the second one makes the use of an extra transmission zero. With the help of these solutions, two types of full difierential bandpass fllters are implemented on an FR4 using the embedded passive device technology, with the additional purpose of being designed for SiP applications. The passband of the fllters conforms to the WLAN IEEE 802.11a (5GHz) standard. Most importantly, the occupied areas of the two proposed bandpass fllters are only 6mm£6:7mm and 6:6mm£8:3mm respectively. Compared with previous research, area reductions of up to 98.05% and 97.76% can be achieved.

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