DocumentCode :
54824
Title :
A Novel Surface-Mounted Monoblock Dielectric Filter
Author :
Xi Wang ; Ke-Li Wu ; Wen-Yan Yin
Author_Institution :
Key Lab. of Minist. of Educ. for Design & EMC of High-Speed Electron. Syst., Shanghai Jiao Tong Univ., Shanghai, China
Volume :
4
Issue :
11
fYear :
2014
fDate :
Nov. 2014
Firstpage :
1822
Lastpage :
1827
Abstract :
A novel surface-mounted monoblock high Q dielectric filter is presented in this paper. The proposed filter is constructed on the basis of a surface-metalized dielectric monoblock and is surface mountable on a printed circuit board (PCB) by means of a reflow process. The monoblock dielectric filter can be easily manufactured by mold casting. Metal caps on the surface and through holes in dielectric body are introduced for tuning capability. The input/output coupling is realized by inserting a stepped probe into the dielectric cavity through a via structure on the PCB. A novel electric coupling method using microstrip line is presented for easy control of coupling coefficient by adjusting the length and width of the microstrip line and flexible routing of cross couplings. One prototype 8-2 surface-mounted monoblock dielectric filter operating at 1.9 GHz with 84 MHz bandwidth is designed, fabricated, and measured. The measured insertion loss at center frequency is 0.73 dB with 0.6 dB ripple and corresponding unloaded Q factor of around 1700, demonstrating that the proposed filter architecture is applicable to a radio front-end of advanced wireless communication systems.
Keywords :
Q-factor; casting; dielectric materials; metallisation; microstrip lines; printed circuits; reflow soldering; surface mount technology; PCB; bandwidth 1.9 GHz; bandwidth 84 MHz; coupling coefficient; cross couplings; dielectric body; dielectric cavity; flexible routing; high Q dielectric filter; input-output coupling; metal caps; microstrip line; mold casting; printed circuit board; radio front-end; reflow process; surface-metalized dielectric monoblock; surface-mounted monoblock dielectric filter; unloaded Q factor; wireless communication systems; Couplings; Dielectrics; Educational institutions; Microstrip; Surface impedance; Surface treatment; Tuning; Dielectric filter; high Q; microstrip; monoblock; surface mount;
fLanguage :
English
Journal_Title :
Components, Packaging and Manufacturing Technology, IEEE Transactions on
Publisher :
ieee
ISSN :
2156-3950
Type :
jour
DOI :
10.1109/TCPMT.2014.2347342
Filename :
6891305
Link To Document :
بازگشت