Other

Chun-Yu Chu

Chun-wei Chen

Chun-Kai Wang

Yu-Cheng Chen

Jen-Ti Peng

Sheng-Feng Yeh

Wun-Kai Wu

Chien-Chih Li

Jung-Chin Hsu

Sheng-Ho Chang

A millimeter wave filter fine-tuning structure includes a resonant cavity, a fine-tuning cavity disposed at the edge of the resonant cavity, a fine-tuning cavity coupled to the resonant cavity, and plural adjusting screws disposed and inserted in the fine-tuning cavity, and the distance between the adjusting screws and the resonant cavity may be used to adjust the resonant frequency of the filter.

Millimeter wave filter fine-tuning structure

Disclosed is an indirect transmission type automatic frequency modulation filter including a microwave body, a moving plate, a fastener, and a motor unit. The microwave body has plural openings. The moving plate includes a board, plural lugs and a first moving member, and the lugs and the first moving member form the board. The fastener includes a support base and a second moving member. The motor unit includes a rod and a driver, and the driver determines a clockwise rotation or a counterclockwise rotation and drives the rod to move the moving plate towards or away from the microwave body so as to insert the lugs into cavities to a desired depth and adjust a center frequency.

Indirect transmission type automatic frequency modulation filter

The present invention is to provide an active barcode authentication system and an authentication method thereof, which actively provides an encrypted message barcode and can fast and easily authenticate the ID of a user who holds a portable device, so that the avoidance that portable information is copied or stolen to cause fake conditions of trade, ID confirmation, membership card, access control, attendance, etc. can be made.

Active barcode authentication system and authentication method thereof

Growing community of inventors

Chiayi County, Taiwan

Chun-Yu Chu