CST – Computer Simulation Technology

60-GHz thin broadband high-gain LTCC metamaterial-mushroom antenna array
Wei Liu, Zhi Ning Chen, Xianming Qing
IEEE Transactions on Antennas & Propagation
vol. 62, no. 9, Sep. 2014
pp. 4592–4601
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
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.

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