Assertion: radar's transmitter | /r/AtLocation | element
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text: PESA use a single or sometimes two high power amplifier (HPA) source ( often a klystron or traveling-wave tube ) transmitting a single power signal, the signal is then divided into thousands of paths represent thousand phase shifter and elements , there is also a single low noise amplifier (LNA), by contrast, AESA radar consist of thousand of transmit – receive modules The fact that the transmitter resides in the elements itself means there is no standalone transmitter and receiver – there is an exciter