Article | GigaHertz 2003. Proceedings from the Seventh Symposium | A 60 GHz Image Rejection Filter Manufactured Using a High Resolution LTCC Screen Printing Process

Title:
A 60 GHz Image Rejection Filter Manufactured Using a High Resolution LTCC Screen Printing Process
Author:
Isabel Ferrer: Swedish Defence Research Agency, Dept. of Microwave Technology, Sweden Jan Svedin: Swedish Defence Research Agency, Dept. of Microwave Technology, Sweden
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Year:
2003
Conference:
GigaHertz 2003. Proceedings from the Seventh Symposium
Issue:
008
Article no.:
064
No. of pages:
3
Publication type:
Poster
Published:
2003-11-06
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press; Linköpings universitet


An LTCC test panel including various mm-wave test circuits has been designed and manufactured using a recently developed screen printing process (Thales Microelectronics) having a highly optimised resolution; here evaluated using a minimum microstrip line width/ gap of 2 mil (50.8 ¬Ķm). In this paper we report on a 60 GHz microstrip coupled lines bandpass filter manufactured on a 3.7 mil (94.0 ¬Ķm) thick Ferro A6S substrate using a minimum line gap of 2 mil. The electromagnetic effects caused by the top conductor recess were taken into account using direct full-wave simulations (Ansoft HFSS) but also by a circuit simulation methodology based on the use of effective relative permittivity and substrate height parameters [1]. Preliminary measurement results show a 3 dB bandwidth of approximately 5 GHz; a passband insertion loss of 4 dB and a center frequency slightly above the simulated value. This bandpass filter could e.g. serve as an image rejection filter together with the 60 GHz WLAN chipset [2] where it would demonstrate a 55 GHz image suppression of approximately 20 dB

GigaHertz 2003. Proceedings from the Seventh Symposium

Author:
Isabel Ferrer, Jan Svedin
Title:
A 60 GHz Image Rejection Filter Manufactured Using a High Resolution LTCC Screen Printing Process
References:

[1] R. Kulke; W. Simon; A. Lauer et al; ‚ÄúInvestigation of Ring-Resonators on Multilayer LTCC; International ¬īMicrowave Symposium Workshops and Short Courses; WMD-09; Phoenix; Az.; 20-25 May 2001.


[2] C. Fager; M. Hasselblad; R. Kozhuharov; L. Land√©n; T. Masuda; and; H. Zirath; ‚ÄĚA Front-end Chipset for a 60 GHz Radio Transceiver‚ÄĚ; Proc. Of 2001 GigaHertz Symposium; 26-27 Nov; Lund; Sweden.


[3] http://www.ferro.com


[4] http://www.thales-microelectronics.com

GigaHertz 2003. Proceedings from the Seventh Symposium

Author:
Isabel Ferrer, Jan Svedin
Title:
A 60 GHz Image Rejection Filter Manufactured Using a High Resolution LTCC Screen Printing Process
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