NDLI: A broadband 3D vertical Microstrip to Stripline transition in LTCC using a quasi-coaxial structure for millimetre-wave SOP applications

Content Provider	IEEE Xplore Digital Library
Author	Amaya, R.E. Ming Li Hettak, K. Verver, C.J.
Copyright Year	2010
Description	Author affiliation: Terrestrial Wireless Research Branch, Communications Research Centre, Ottawa, Canada K2H 8S2 (Amaya, R.E.; Ming Li; Hettak, K.; Verver, C.J.)
Abstract	This paper presents a broadband microwave vertical transition structure suitable for System on Package (SOP) applications at millimeter-wave frequencies (mmW). The designed structure includes a Microstrip (MS) to Stripline (SL) back to back vertical transition optimized for 60 GHz applications but also suitable for E-band frequencies as well. The mmW transition presented here was fabricated in a Low-Temperature Co-fired Ceramic (LTCC) process using commercially available Ferro A6M tape layers. Design and optimization of this microwave transition was carried out in order to maintain a constant characteristic impedance over the entire bandwidth. A bandwidth improvement of 30% is observed by optimizing the ground via fence of the vertical transition. A maximum of 12 surrounding vias were used due to limitations in the LTCC process. Measurements of this vertical transition show a Return Loss of better than 10 dB for frequencies as high as 90 GHz while maintaining an insertion loss of less than 0.9 dB. A grounded coplanar waveguide (CPWG) to MS planar transition with good electrical performance for up to 110 GHz was also designed and implemented to characterize the vertical transition fabricated.
Starting Page	109
Ending Page	112
File Size	887045
Page Count	4
File Format	PDF
ISBN	9781424472321
e-ISBN	9782874870163
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-09-28
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	EUROPEAN MICROWAVE ASSOC
Subject Keyword	Transmission line measurements Impedance Bandwidth Coplanar waveguides Microwave communication Frequency measurement Microwave measurements
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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