A radio frequency module coupled to an object includes an antenna unit and a chip unit. The antenna unit operates in one of a first mode and a second mode, to receive a radio frequency signal and transmit an identification signal, wherein the frequencies of the radio frequency signal and the identification signal is an operation signal. The chip unit is coupled to the antenna unit and is utilized for generating the identification signal according to the radio frequency signal received by the antenna unit.一種射頻模組，耦接於一物體，射頻模組包含有一天線單元，運作於一第一模態及一第二模態其中之一，以接收一射頻訊號及發送一辨識訊號，其中該射頻訊號及該辨識訊號的頻率為一運作頻率；以及一晶片單元，耦接於該天線單元，用來根據該天線單元所接收的該射頻訊號，產生該辨識訊號。
