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An Ultra-Thin, High-Power, and Multilayer Organic Antenna Array With T/R Functionality in the X -Band

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7 Author(s)
Donado Morcillo, C.A. ; Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA ; Patterson, C.E. ; Lacroix, B. ; Coen, C.
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The transmit-receive (T/R) operation of an ultra-thin organic antenna array is presented at a center frequency of 9.5 GHz. High transmit power is achieved while maintaining an ultra-low profile in a novel system-on-a-package scheme whereby 32 silicon-germanium (SiGe), transmit/receive integrated-circuit (TRIC) modules have been flip-chip bonded to the array board. Each SiGe TRIC drives a pair of slot-coupled microstrip patch antennas that form an 8 × 8 rectangular array, which is all packaged in an organic substrate stack of liquid crystal polymer and RT/Duroid 5880LZ. The organic package occupies an area of 30.5 cm × 25.4 cm and has a total thickness of only 1.80 mm. The small-signal characterization of the array showed a G/T=-6.64 dB , and a measured receive gain of 20.1 dB with a variation of 0.7 dB over a 1-GHz bandwidth (BW). Finally, far-field large-signal experiments showed a measured effective isotropically radiated power of 47.1 dBm with a variation of 2.36 dB over the same BW, and without the aid of additional thermal management components.

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:60 ,  Issue: 12 )