Design of Millimeter-Wave HBT Amplifier, Diode Mixers, and On-Wafer Antenna Measurement
Date Issued
2011
Date
2011
Author(s)
Wu, Yi-Ching
Abstract
This thesis consists of three parts. First part is millimeter-wave mixers included image rejection mixer. Second part is a HBT amplifier. Third part is millimeter-wave chip antenna measurement and setup.
In this thesis, first part is to design a W-band image rejection mixer for astronomy application. It is composed of a 90° Lange coupler in image rejection mixer. The phase error and gain imbalance of Lange coupler will dominate the elimination of image signal. However, for conventional Lange couplers, it is hard to get perfect consistency both in gain and phase performance especially in high frequency. Therefore, by modifying the layout of the conventional Lange coupler which is applied in a MMIC W-band image reject mixer, the performance of image rejection is improved. The second part is to implement a D-band HBT amplifier. To design high gain in this band is main purpose. Third part is millimeter-wave chip antenna measurement and setup. A low cost measurement approach is proposed to measure the antenna performances. The measured angle is wider than that of the conventional approach with better accuracy.
Subjects
image rejection mixer
D-band amplifier
on chip antenna measurement
Type
thesis
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