The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper proposes the layout design of multi-finger power SiGe HBTs with non-uniform finger spacing to improve the thermal stability. Two types of 20-finger SiGe HBTs with uniform and non-uniform finger spacing are fabricated. Experimental results shown that, for the HBT with non-uniform finger spacing, the power level for thermal regression is 22.8% higher than that of the uniform one, which contributes...
Based on a three-dimensional thermal-electrical model, non-uniform finger spacing power SiGe HBT was designed and fabricated. Experiment result shows that the peak temperature of non-uniform spacing SiGe HBT is Iowed by 22 K compared with that of uniform space HBT. For the same nonuniform spacing HBT, temperature non-uniformity among the fingers is improved obviously at different biases. The higher...
For power bipolar transistors, the emitter-ballasting-resistor is usually used to improve the thermal stability. However, the ballasting-resistors degrade the output power, power gain, power-added-efficiency (PAE) of the transistor. In this paper, the thermal stability can be improved substantially by adjusting either the spacing or length of the emitter fingers without using ballasting resistors...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.