| CPC G06F 3/0446 (2019.05) [G01S 13/89 (2013.01); G06F 3/011 (2013.01)] | 18 Claims | 

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               1. A detection device for detecting a human body portion, comprising: 
            a plurality of capacitive sensors, detecting first information of the human body portion in a first direction, and detecting second information of the human body portion in a second direction; 
                a transmission antenna; 
                a reception antenna; 
                a radar module, using the transmission antenna to transmit a radar signal to the human body portion, and using the reception antenna to receive a reflection signal from the human body portion, wherein the radar module detects third information of the human body portion in a third direction according to the reflection signal; 
                a carrier element, wherein the capacitive sensors, the transmission antenna, and the reception antenna are disposed on the carrier element; 
                a processor, estimating status information of the human body portion according to the first information, the second information, and the third information; and 
                an antenna cover, covering the transmission antenna and the reception antenna; 
                wherein the antenna cover comprises a conductive layer and a nonconductive housing; 
                wherein the conductive layer comprises a signal radiation region and a signal cut-off region; 
                wherein a plurality of slots are formed and periodically arranged in the signal radiation region of the conductive layer. 
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