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Fully embedded LC diplexer passive circuit into an organic package substrate
Author(s) -
Lee Hwan Hee,
Park Jae Yeong
Publication year - 2007
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.22921
Subject(s) - diplexer , capacitor , substrate (aquarium) , inductor , microwave , materials science , insertion loss , optoelectronics , handset , electrical engineering , electronic engineering , duplexer , engineering , telecommunications , oceanography , voltage , antenna (radio) , geology
In this article, fully embedded and miniaturized diplexer passive circuit device has been developed and characterized for dual‐band/mode CDMA handset applications. The size of the embedded diplexer is significantly reduced by embedding high Q circular spiral inductors and high DK MIM capacitors into a low cost organic package substrate. The embedded inductor and capacitor have quality factors of 61 and 32 at 1 GHz. The fabricated diplexer has insertion losses and isolations of −0.5 and −23 dB at 824–894 MHz and −0.7 and −22 dB at 1850–1990 MHz, respectively. Its size is 3.9 mm × 3.9 mm × 0.77 mm (height). The fabricated diplexer is the smallest one which is fully embedded into a low cost organic package substrate. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2960–2963, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22921