11 May 2009 Fully printed phased-array antenna for space communications
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We present a flexible active 2-bit 2-element phased-array antenna (PAA) fully fabricated using ink-jet printing technology. High speed carbon nanotube (CNT) based field effect transistors (FETs) function as switch in the true-time delay line of the PAA. The 2-bit 2-element active PAA is printed out at room temperature on 100μm thick Kapton substrate. The FET switch works well for 5GHz RF signals. An ON-OFF ratio of over 100 is obtained at a low Vds bias of 1.8V. The measured azimuth beamsteering angles of PAA agree well with simulation values.
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Maggie Yihong Chen, Maggie Yihong Chen, Xuejun Lu, Xuejun Lu, Harish Subbaraman, Harish Subbaraman, Ray T. Chen, Ray T. Chen, "Fully printed phased-array antenna for space communications", Proc. SPIE 7318, Micro- and Nanotechnology Sensors, Systems, and Applications, 731814 (11 May 2009); doi: 10.1117/12.819036; https://doi.org/10.1117/12.819036

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