THz radar transmitting/receiving front end
A radar, point frequency source technology, applied in the field of radar, can solve the problems that the signal is difficult to drive the transmitting link and the receiving link at the same time, there is no low noise amplifier, the loss of the mixing device is large, etc. The effect of simplifying the machine system and high achievability
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[0016] The specific implementation of the transceiver front-end structure of this THz radar will be described in detail below in conjunction with the accompanying drawings.
[0017] First, it is specifically explained that the non-coherent frequency source realizes the principle of coherent reception
[0018] Suppose the signals generated by frequency sources 1 and 2 are as follows:
[0019] the s 1 (t)=A 1 cos(ω 1 t+θ 1 ) (1)
[0020] the s 2 (t)=A 2 cos(ω 2 t+θ 2 )
[0021] In the formula, A 1 、A 2 are the amplitudes of frequency sources 1 and 2, respectively, ω 1 , ω 2 is the angular frequency corresponding to the frequency source, θ 1 , θ 2 is the initial phase corresponding to frequency source 1 and 2. After these two frequency sources are respectively multiplied by N, the signal form obtained is as follows:
[0022] the s 1 '(t)=A 1 'cos(Nω 1 t+Nθ 1 ) (2)
[0023] the s 2 '(t)=A 2 'cos(Nω 2 t+Nθ 2 )
[0024] the s 1 After '(t) interacts ...
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