60-GHz LTCC Integrated Circularly Polarized Helical Antenna Array

Author

Liu, Changrong ; Guo, Yong-Xin ; Bao, Xiaoyue ; Xiao, Shao-Qiu

Author_Institution

Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore, Singapore

Volume

60

Issue

3

fYear

2012

fDate

3/1/2012 12:00:00 AM

Firstpage

1329

Lastpage

1335

Abstract

A 60-GHz wideband circularly polarized (CP) helical antenna array of 4 × 4 elements is designed and fabricated using low temperature cofired ceramic (LTCC) technology. The flexible via hole distribution is fully utilized to achieve a helical antenna array to obtain good circular polarization performance. Meanwhile, grounded coplanar waveguide (GCPW) to stripline is utilized for probe station measurement. Unlike traditional helical antennas, the proposed helical antenna array is convenient for integrated applications. The fabricated antenna array has dimension of 12 × 10 × 2 mm³. The simulated and measured impedance, axial ratio (AR) and radiation pattern are studied and compared. The proposed antenna array shows a wide measured impedance bandwidth from 52.5 to 65.5 GHz for | S₁₁| <; -10dB, wideband measured AR bandwidth from 54 to 66 GHz for AR <;3 dB, respectively.

Keywords

antenna radiation patterns; broadband antennas; coplanar waveguides; electromagnetic wave polarisation; helical antennas; millimetre wave antenna arrays; strip lines; GCPW; LTCC integrated helical antenna array; axial ratio; bandwidth 52.5 GHz to 66 GHz; circular polarization performance; flexible via hole distribution; frequency 60 GHz; grounded coplanar waveguide; impedance bandwidth; low-temperature cofired ceramic technology; probe station measurement; radiation pattern; stripline; wideband CP helical antenna array; Antenna arrays; Antenna measurements; Antenna radiation patterns; Arrays; Frequency measurement; Gain; Helical antennas; 60-GHz radio; helical antenna array; low-temperature cofired ceramic (LTCC);

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2011.2180351

Filename

6109320