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http://dx.doi.org/10.4313/JKEM.2012.25.12.949

Design and Fabrication of Dielectric Duplexer and Bandpass Filters for K-PCS and W-CDMA Dualband  

Choi, U-Sung (Department of Electrical. Information and Communication Engineering, Wonkwang University)
Yang, Sung-Hyun (Department of Electronics, Kwangwoon University)
Kim, Cheol-Ju (Department of Chemistry, Chonbuk University)
Moon, Ok-Sik (R&D Team, Yooilcnt Co. Ltd.)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.25, no.12, 2012 , pp. 949-954 More about this Journal
Abstract
The K-PCS and W-CDMA dual band dielectric duplexer and bandpass filters have been designed and fabricated. The dual band duplexer consists of the separate monoblock K-PCS and W-CDMA duplexers using common antenna port. The coupling capacitance and I/O impedance matching have been designed to minimize the cross interference between the bands. Isolations of crosspoint between Tx and Rx in K-PCS and W-CDMA dualband were about 47 dB and 100 dB, respectively. On the other hand, isolations of Tx and Rx in K-PCS and W-CDMA were about 66 dB and 65 dB, respectively. The difference between 47 dB and 100 dB originated from the different center frequencies in Tx and Rx of K-PCS and W-CDMA bands. The coupling capacitance of the bandwidth, I/O capacitance of I/O matching and impedance matching, and various capacitances were important role to fabricate the dielectric duplexer and bandpass filters.
Keywords
K-PCS; W-CDMA; Isolation; Capacitance;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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