Kim H. T., Park B.S., Song S.S., Moon T.S., Kim S.H., Kim J.M., Chang J.Y., Ho Y.C.,
2018, A 28-GHz CMOS direct conversion transceiver with packaged 2 $\times$ 4 antenna
array for 5G cellular system, IEEE J. of Solid-State Circuits, Vol. 53, No. 5, pp.
1245-1259