Student Design Competition in European Microwave Conference Electrical Engineering Institute of CCU Wins First Prize of “Tunable RF Filter Group”

Published on Dec 30 2013

European Microwave Conferenceis one of the biggest events of the year in the academic field and the microwave industry. Not only does it consist of thousands of people who come from all around the world to publish their thesis or display their achievements, but also more than 200 companies in the industry are taking part in the exhibition of new technology.Dr. Janne-Wha Wu from Electromagnetic Integrated Circuits of CCU’s Electrical Engineering Institute has led students Lo-Chun Tung, Yao-Chia Guo, and Jheng-Wei Wu to participate in European Microwave Conference for the first time, and they have taken down the first prize of “Tunable RF Filter Group”!

“The organization would announce the formulas for grading, and participants could decide the materials and skeleton of the circuit by themselves,” Lo-Chun Tung, student of CCU’s Electrical Engineering Institute and the representative of the team, who went to Nuremberg, Germany to take part in European Microwave Conference, said. Participants have to design their circuits according to features such as reflection coefficient, range of modulation frequency, quality of signal, etc. Also they have to apply the formulas given by the organization to their design. Figures which came out bigger after measuring meant that the design of the circuit was better; this mode of competition brought the imagination of students into full play, but the flaw was students would not know what surprise attacks the opponents would use.

Tunable RF Filters are used in base stations to switch to users of different frequency bands. When the students of Electrical Engineering of CCU were designing the circuit, firstly they came across the challenge of searching for the appropriate materials. They spent two months and finally found the varactor diodes. Lo-Chun Tung stated that the varactor diodes played an important role when designing the circuit, as the frequency was adjustable and better if the range was wider. However, when the team of CCU found out that the quality of the signal (as the voltage passes the frequency) was the key to the numbers of the measurement, they chose the varactor diodes, which the frequency range was narrower but the quality was better. Moreover, the price of the varactor diodes was only 15 NTD, which replaced the initial varactor diodes which cost 500 NTD. This reverse had become the key to win the first prize.

“We came to know that using simple structures could lead to better results after joining the competition.” Lo-Chun Tung said, initially they wasted time on testing and changing the variables because they lacked the knowledge of the structures and theories of circuits, so through this experience she had known better about the principles of how to design the circuits. Furthermore, the students were appreciative of Chia-Chan Chang and Sheng-Fuh Chang’s student, Wang, as he shared his experience of going to Seattle to compete. This also helped them in getting international honor for CCU.

Every year, the main countries of Europe would take turns to host the European Microwave Conference, and it has gained high attention among the academia and the industry of microwave. Conference of this year was held in Nuremburg, Germany, attracting thousands of experts from all around the world and over 200 companies. A few highlights of the conference would be “Student Design Competition” and “Graduates Creative Competition.”Other than CCU’s taking down the first prize of “Tunable RF Filter Group,” Lo-Chun Tung also worked with another CCU student Jen-Ke Chen, together with Italian and Germany students to compete in “Graduates Creative Competition.” Their aim is to use their creativity to think about over two themes they heard during the Conference. This competition focuses on the collaboration of different countries, brainstorming, and the ability of expressing thoughts. After discussing and preparing for presenting, participants take turns to give a presentation on the last day, then allowing visitors as well as the seven judges to take turns to question, and then they could convey their own concepts and methods to the crowd. Students of CCU has found a new way of thinking and acting by means of competing abroad and learning through the works of other students.