Low-power consumption and low-noise amplifier adopting noise cancellation technology
A low-noise amplifier and noise cancellation technology, applied in the direction of improving the amplifier to reduce the influence of noise, etc., can solve the problem of high noise figure, and achieve the effect of less voltage margin, lower circuit power consumption, and lower power consumption
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[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0028] The specific embodiment of the present invention provides a low-power low-noise amplifier using noise cancellation technology, such as image 3 As shown, it includes a balanced unbalanced transformer 1, a capacitor cross-coupled common-gate amplifier stage 2, a feedforward noise cancellation stage 3, a main common-gate amplifier stage 4, and a load impedance 5.
[0029] Capacitor cross-coupled common-gate amplifier stage 2 uses two i...
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