The presented THz receiver is based on an antenna coupled titanium micro-bolometer. A new geometrical design improves the robustness and extends the lifetime of the sensor. A study of sensor lifetime using different biasing currents is presented. The lifetime was verified by several tests and over 1000 operating hours. A new micro-bolometer sensitivity measurement algorithm is presented in the paper and measurement results using the proposed algorithm are shown. The new algorithm was developed to be suitable for ATM production testing. In the paper, a novel feature called “sensitivity boosting” is described, together with its influence on sensitivity and lifetime.

Most ASIC’s demand signal conditioning sub-circuits to modify various signal parameters; one of the important parameter is the gain. The presented configuration is based on the conventional R-2R structure which mainly suffers from the mismatch imperfections. The study shows possible approach to improve mismatch characteristic or enables us to take the advantage to increase bit resolution without mismatch deteriorations. The approach could be used to even further improve accuracy of the numerous previously described approaches [1], [2] which already eliminate high resolution mismatch imperfections. Paper presents the implementation of the gain stage with digital gain adjustment, in the range from 0.9 to 1.1 in 128 equidistant monotonous steps, nevertheless the approach could be implemented even for higher resolution stages. For robust design in terms of the fabrication process and harsh environment operation, a fully differential amplifier was designed in standard 0.18μm CMOS technology. Designed amplifier in combination with resistive network is presented together with simulation results including the parasitic capacitances.

This paper addresses the realization of the integrated magnetic field measurement microsystem incorporating regulation electronics for compensation of its non-idealities and environmental influence