| Summary: | 碩士 === 國立中正大學 === 電機工程研究所 === 106 === As the collapse of bee colonies intensifies, it affects the global ecology, Various fields are devoted to research. The research of small organisms in the field of electrical engineering has always been an important issue. Harmonic radar systems are widely used in these research experiments . However, in order to get more information from these small creatures, The quality of harmonic sensors is a very important part. Such as the conversion gain, sensitivity, or whether it can be successfully attached to small organisms, etc., will affect the success of the study. Therefore, this dissertation discusses the field experimentation of honey bee quests and divides them into two main themes. One is about the application of bees to track field measurement experiments, and the other is the design of light weight harmonic transponder. About the first topic, Mainly using Mixing harmonic radar with light weight transponder. It not only validated the measurement characteristics indoors, but also arranged experiments for outdoor design. Measured data of 50 bees eating different concentrations of pesticides. Including bee flight cycle, angles, distances...etc. Can further analyze the behavior of bees and insects and solve the mystery of bees disappearing. And about the second topic. Mainly designed and improved two versions of new light weight harmonic transponder. This new type of thin harmonic transponder follows the design of a differential collocated flat PIFA antenna, And there are two resonant cavities with resonant frequencies at 9.4 and 18.8 GHz, respectively. The omnidirectional gain in the E-plane is 2.5dBi and 1.6dBi. This thin version of the harmonic transponder also proposes a new method to improve the loss of conversion rate caused by the liquid on the bees and increase the antenna gain, and its small size, weight is only 11mg. It can be adhered to the bees without affecting its flight and entering or leaving the hive. These improvements can effectively expand the detection range of the bees' radars and can be applied to field measurements of bees.
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