Linear tapered cavity-backed slot antenna for millimeter-wave LTCC modules

Il Kwon Kim, Nobutaka Kidera, Stephane Pinel, John Papapolymerou, Joy Laskar, Jong Gwan Yook, Manos M. Tentzeris

Research output: Contribution to journalArticlepeer-review

48 Citations (Scopus)


In this letter, a linear tapered slot antenna (LTSA) which is backed by an air cavity is proposed and fabricated using low temperature cofired ceramic (LTCC) substrate. Traditionally, the high dielectric constant and the thick LTCC substrate seriously degrade the gain and radiation property performance because a large portion of the radiated fields are confined in the LTCC substrate. However, the proposed LTSA with the air cavity backing structure exhibits a high gain (4.9-6.9 dBi) and a good end fire radiation pattern. Also, the proposed antenna has a wide impedance bandwidth (about 30 from 45 to 75 GHz). Through numerical and experimental analyzes, we found that the proposed antenna can be used for a variety of millimeter-wave applications, due to its broadband operating range and its easy integration with 3-D LTCC module.

Original languageEnglish
Article number874069
Pages (from-to)175-178
Number of pages4
JournalIEEE Antennas and Wireless Propagation Letters
Issue number1
Publication statusPublished - 2006

Bibliographical note

Funding Information:
Manuscript received November 22, 2005. revised March 7, 2006. This work was supported in part by KOSEF, the Georgia Electronic Design Center (GEDC), and Asahi Glass Company. I. K. Kim and J.-G.Yook are with Yonsei University, 120-749 Seoul, Korea (e-mail: N. Kidera is with the Ashahi Glass Company, 1 Yokohama Kangawa 221-8755, Japan (e-mail: S. Pinel, J. Papaplymerou, J. Laskar, and M. M. Tentzeris are with the School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, GA 77005 USA (e-mail: Digital Object Identifier 10.1109/LAWP.2006.874069 Fig. 1. Radiation pattern of conventional (without cavity back) LTSA on LTCC at 60 GHz. [Solid line: azimuth plane (XY). Dashed line: elevation plane (YZ)].

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering


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