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CST – Computer Simulation Technology

Title:
60-GHz thin broadband high-gain LTCC metamaterial-mushroom antenna array
Author(s):
Wei Liu, Zhi Ning Chen, Xianming Qing
Source:
IEEE Transactions on Antennas & Propagation
Vol./Issue/Date:
vol. 62, no. 9, Sep. 2014
Year:
2015
Page(s):
pp. 4592–4601
Keywords:
Low profile, low temperature cofired ceramic (LTCC),metamaterial, millimeter wave antenna array,mushroom antenna, mutual coupling, substrate integrated waveguide (SIW), surface wave, wideband, 60 GHz
Abstract:
A low-profile broadband metamaterial-mushroom antenna array is proposed for high-gain 60-GHz band applications. The antenna array consists of a single-layer mushroom radiating structure and a simplified single-layer substrate integrated waveguide (SIW) feeding network. A new transmission-line based model is presented to estimate the resonant frequencies of the operating and antiphase modes. With the metamaterial-mushroom structure, the closely-placed antenna elements realize less mutual couplings, higher aperture illumination efficiency compared to conventional patch antennas. An 8 x 8 mushroom antenna array is designed and prototyped using low-temperature cofired ceramic (LTCC), the measurement shows the antenna array with the feeding transition proposed an impedance bandwidth of 56.3–65.7 GHz with a boresight gain greater than 21.2 dBi and up to 24.2 dBi at 62.3 GHz. The proposed antenna array features the merits of high gain, broadband, compact size, and low cross-polarization levels.
Document:

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