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Design of CMOS Millimeter-Wave and Terahertz Integrated Circuits with Metamaterials by Yang Shang, Hao Yu

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Antenna 209
8.5 Conclusion
The designs of THz CMOS w ide -band and high-gain on-chip antennas are
demonstrated in a compact area by high-Q passive structures s uch as substrate
integrated waveguide (SIW) and metamaterial based c omposite r ight/left-
handed transmission line (CRLH T-line). In the wide-band 280-GHz on-chip
circularly polariz ed SIW antenna design in the 65nm CMOS process, by cre-
ating corner slots in SIW structure, the size of the pr oposed SIW antenna is
reduced by 15% when compared to the conventional designs. As verified by
the EM simulation, the proposed antenna ha s -0.5-dBi antenna gain and 32.1-
GHz ba ndwidth centered at 268 GHz. In the CRLH T-line-based leaky wave
antenna (LWA) design in the 65-nm CMOS process, stacking of dielectric layer
with hig h resistivity of Si is utilized to improve the LWA efficiency. With corre-
lated mea surement and EM validation from 220 GHz to 325 GHz, a broadside
radiation pattern is achieved at 280 GHz with 65% radiation efficiency and
4.1dBi antenna gain at 280GHz. Both antenna structure s can be potentially
deployed for the design of an on-chip antenna array in THz biomedical imag-
ing systems. In the following section, CMOS-bas ed transceiver design for THz
Imaging will be discussed.

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