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A 60GHz 4×4 circular polarized (CP) patch array antenna with a 90nm CMOS OOK modulator are integrated in low temperature co-fired ceramic (LTCC) substrate to form a SiP transmitter. The CP array shows a 3dB axial ratio (AR) bandwidth of over 8GHz. It has a 3dB beamwidth of 20º and a peak gain of 16.8dBi. Device modeling at 60GHz is done to accurately simulate the lumped components. The CMOS modulator...
A 60 GHz 4 × 4 circular polarized (CP) patch array antenna with a 90 nm CMOS OOK modulator are designed and integrated in low temperature cofired ceramic (LTCC) substrate to form a SiP-based transmitter. By applying a stripline sequential rotation feeding scheme, the CP array exhibits a wide impedance bandwidth (VSWR<;2) and 3 dB axial ratio (AR) bandwidth, both over 8 GHz. It has a beam-shaped...
The design of a subthreshold voltage startup module for low input voltage applications, down to 0.55 V, is introduced. The proposed startup module can generate a relatively high voltage from input to assist a stepup DC-DC converter to start. It employs a dynamic substrate biasing technique to realise subthreshold operation. The design was verified by simulation and measurement in a commercial 0.35...
This study presents a novel single proof-mass tri-axis capacitive CMOS MEMS accelerometer to reduce the footprint of chip. A serpentine out-of-plane (Z-axis) spring is designed to reduce cross-axis error. A magnetic actuation for Z-axis self-test is also presented. The tri-axis accelerometer has been successfully implemented using TSMC 2P4M process and our in-house post-process. Measurement results...
This letter presents a 100-GHz integrated Quasi-Yagi antenna on silicon substrates of low resistivity 10 Omegamiddotcm. The fabrication was realized with the back-end-of-line process. The characterization was conducted on wafer with Cascade Microtech coplanar probes and an HP8510XF network analyzer. Reflection measurements show a return loss of 8.2 dB at 100 GHz and a -6-dB impedance bandwidth of...
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