Design of On-Chip Ring Slot Antennas with Silicon Lens for Millimeter Wave
Date Issued
2015
Date
2015
Author(s)
Chen, Hong-Pei
Abstract
This thesis uses 40nm and 65nm CMOS technology to design on-chip ring slot antennas which operate at millimeter and terahertz band, respectively. Slot antenna is selected due to easy metal density adjustment to comply with design rule requirement on standard CMOS process and its planar structure can be implemented on-chip directly. To reduce substrate loss, chip is mounted on low loss silicon lens to eliminate substrate wave and improve antenna directivity. Selection of lens size is simulated by full-wave EM simulation and we get good agreement with measurement. The integrated lens for the radiating source is equivalent to half-space. We implement the low frequency model at 5GHz which has the scaled antenna layout as the on-chip version to verify the antenna characterization about half-space radiation environment and resonant frequency shift. Simulation results for two operation frequency bands of on-chip antennas perform well. The output power of 140GHz source is -2dBm by consuming 45mW DC power. Simulated directivity of integrated lens antenna is 18.6dB, radiation efficiency is 40%. Equivalent isotropic radiated power (EIRP) is estimated to be 12.62dBm. In addition, the source array at 550GHz is measured to radiate 61 to 126 by consuming 0.5 and 1.3 W DC power, respectively. Simulated directivity of integrated lens antenna is 33dB, radiation efficiency is 30%. EIRP is estimated to be 20.85 and 24 dBm. To the best of our knowledge, this is the first design of on-chip antenna using ring slot antenna feeding by microstrip line and being integrated with active circuits.
Subjects
Millimeter-wave
terahertz
ring slot antenna
on-chip antenna
integrated silicon lens
Type
thesis
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