Characterisation of embedded filters in advanced printed wiring boards

Citation
S. O'Reilly et al., Characterisation of embedded filters in advanced printed wiring boards, MICROEL REL, 41(6), 2001, pp. 781-788
Citations number
8
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
MICROELECTRONICS RELIABILITY
ISSN journal
00262714 → ACNP
Volume
41
Issue
6
Year of publication
2001
Pages
781 - 788
Database
ISI
SICI code
0026-2714(200106)41:6<781:COEFIA>2.0.ZU;2-J
Abstract
This paper describes the design, fabrication and test of a range of third o rder LC low pass Butterworth filters in MCM-L technology. There are seven f ilters in the range, each consisting of two inductors and one capacitor wit h cut-off frequencies ranging from 10 to 540 MHz. Inductance values range f rom 9.9 to 530 nH, and capacitance values vary from 14 to 723 pF. Air-core (by which we mean no magnetic material) spiral winding structures are desig ned to provide the inductive functions. A new FR4 type laminate material, w hich was developed by ISOLA, is used to form integrated parallel plate capa citor structures. The range of filters was successfully manufactured and el ectrically characterised using a HP4195A impedance analyser. Some environme ntal testing was also carried out on the embedded filters. These included t hermal shock and humidity testing. There were no obvious changes in device performance after the environmental tests. (C) 2001 Elsevier Science Ltd. A ll rights reserved.