A dual-band millimeter-wave (mmW) dielectric resonator antenna (DRA) in silicon based integrated passive device (IPD) technology for unlicensed V-band (57-64 GHz) and E-band (71-86 GHz) applications is proposed in this paper. In the proposed structure, dielectric resonator (DR) was fed by using vertical coupling feed architecture to improve the antenna efficiency and gains. The simulated results show that the antenna can operate in V-band and E-band, and the impedance bandwidths with |S11| less than -10 dB are from 57.6 to 62.1 GHz and from 77.1 to 81.2 GHz, respectively. The simulated gains are 5.1 dBi at 60 GHz and 5.9 dBi at 80 GHz, respectively. The proposed antenna is well suited for dual-band millimeter-wave high-gain wireless communication systems.