The signal is mixed with the help of a Varicap/Varactor Diode (VD) pair in parallel, which extends stability to the modulation signal, and transferred to the Low-Noise Amplifier (LNA/ULNA).
Shen-Iuan, "Inductorless Wideband CMOS Low-Noise Amplifiers Using Noise-Canceling Technique", IEEE Transactions on Circuits and Systems I: Regular Papers, vol.
The two other new broadband MMIC amplifiers are equally suited for use as driver amplifiers in the transmit chain or as second-stage low-noise amplifiers in the receive chain.
Placing a low-noise amplifier at every radiating element sets the noise figure of the system, thereby nullifying the loss of the phase shifters and feed network.
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