Simple Technique for source reflection coefficient measurement while characterizing active devices

This paper describes a simple, yet rigorous technique for fast and accurate determination of the source reflection coefficient during the characterization of microwave active devices. The solution consists in measuring the waves at the DUT reference plane under two different bias conditions. Since the DUT small signal impedance value depends on the bias voltage, the waves at the DUT input port changes as well. We proved that their measurements give enough information to compute the source reflection coefficient with accuracy suitable for most applications. The correction for systematic errors is based in the traditional error-box model and it does not require any exotic calibration procedures. Experimental results are presented and compared to data obtained with more traditional technique

Novel software techniques for automatic microwave measurements

Although many microwave measurement techniques are heavily based on special purpose software, the application of modern software techniques like object oriented programming and new programming language like C++ is seldom used. The impact of such new software solutions can drastically improve the overall design of a microwave test set. The paper presents the design and implementation of a new multiport network analyzer with particular attention to the control program architecture. The use of Object Oriented Programming techniques results in a clear and easy to maintain solution which boosts both the user interface and the overall test set organizatio

Multicultural Training, Self-construals, and Multicultural Competence of School Counselors

A study explored the role of prior academic training in multicultural counseling and school counselors\u27 self-construals in predicting self-reported multicultural counseling competence. Surveys were completed by 156 school counselors from the greater New York City metropolitan area who attended a local school counseling conference. The results of the study indicated that self-reported multicultural counseling competence in female school counselors was significantly predicted by the number of previous multicultural counseling courses they had taken. It was also found that male school counselors reported significantly higher interdependent self-construals than their female peers and that higher independent self-construal scores were significantly predictive of self-reported multicultural counseling competence in female school counselors. The importance of having multicultural counseling courses represented in school counseling curricula is underscored by these findings