NDLI: Micro-fabricated bandpass filter using intertwined spiral inductor and interdigital capacitor

Content Provider	IET Digital Library
Author	Chuluunbaatar, Z. Adhikari, K. K. Wang, Cong Kim, Nam Young
Abstract	A bandpass filter (BPF) with a central frequency of 2.31 GHz for future worldwide interoperability for microwave access (WiMax) applications using integrated passive device technology is presented. To realise the BPF, an interdigital capacitor is integrated between the two divisions of a square-shaped spiral inductor. To achieve a compact size, the capacitor is fully embedded inside the inductor. Additionally, the coils of the inductor are intertwined to utilise enhanced mutual inductance for minimising the loss of signal transmission. The strong electromagnetic coupling between the source and load through the interdigital capacitor results in excellent bandpass skirt selectivity with a measured return loss of 26.1 dB. Moreover, it provides an improved stopband response due to the presence of a transmission zero at 5.94 GHz.
Starting Page	1296
Ending Page	1297
Page Count	2
ISSN	00135194
Volume Number	50
e-ISSN	1350911X
Issue Number	Issue 18, Aug (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/el/50/18
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/el.2014.2040
Journal	Electronics Letters
Publisher Date	2014-08-20
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Band-pass Filter Bandpass Skirt Selectivity BPF Capacitor Coils Electromagnetic Compatibility Enhanced Mutual Inductance Filter And Other Network Frequency 2.31 GHz Frequency 5.94 GHz Inductor Inductors And Transformer Integrated Passive Device Technology Interdigital Capacitor Interference Intertwined Spiral Inductor IPD Technology Loss 26.1 DB Microfabricated Bandpass Filter Microfabrication Signal Transmission Loss Square-shaped Spiral Inductor Strong Electromagnetic Coupling Transmission Zero UHF Filter WiMax Worldwide Interoperability For Microwave Access
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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