Dau-Chyrh Chang

Title: Innovations of Dau-Chyrh Chang

Introduction

Dau-Chyrh Chang is a notable inventor based in Taipei, Taiwan. He has made significant contributions to the field of antenna technology, holding a total of 4 patents. His work focuses on enhancing the performance and efficiency of antenna systems.

Latest Patents

One of his latest inventions is the Toroidal Compact Antenna Test Range. This invention describes the technology of toroidal CATR (compact antenna test range) for generating multiple directional plane waves that propagate toward the center axis of the quiet zone (QZ). The toroidal CATR consists of a torus as the main reflector, sub-reflectors, and the corresponding feed antennas of sub-reflectors. This invention aims to provide multiple directional plane waves propagating toward the center axis of the torus, which is also the center axis of the QZ. The performance of the QZ in this invention features a larger size and better electrical performance inside the QZ. Due to the capability of multiple directional plane waves propagating toward the center axis of the QZ, the complexity of the positioner (turntable) for the antenna under test (AUT) or radar target RCS (radar cross-section) in three-dimensional power pattern measurement will be simplified.

Another significant invention is an Antenna System and a Communication Device. This antenna system includes a monopole antenna with a first end connected to a feed point on a printed circuit board (PCB) and a second end being electrically floating. It also features a matching conductive stub with a first end connected to a ground point on the PCB and a second end being electrically floating.

Career Highlights

Dau-Chyrh Chang has worked with Climax Technology Co., Ltd., where he has applied his innovative ideas to practical applications. His experience in the industry has allowed him to develop technologies that enhance communication systems.

Collaborations

Some of his notable coworkers include Cheng-Wei Chen and Hsiao-Pin Liang. Their collaboration has contributed to the advancement of antenna technology and related fields.

Conclusion

Dau-Chyrh Chang's contributions to antenna technology through his patents demonstrate his innovative spirit and commitment to improving communication systems. His work continues to influence the field and inspire future advancements.