High frequency amplifier in CMOS

Details High frequency amplifier in CMOS High frequency amplifier in CMOS

1996-08-13

1998-07-07

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including field effect transistor

330285, 330294, H03F 316, H03G 330

Patent

active

057775168

ABSTRACT:
A high frequency monolithic amplifier (100) is provided which can be used, for example, in the PLL prescaler of cellular radio systems. The amplifier (100) amplifies single-ended signals having a frequency in the GHz area. It includes a feedback unit (160) which uses parasitic capacitors. The feedback depends on the frequency and is positive for high frequencies and negative for low frequencies. A high gain can be obtained for high frequencies. A comparative low gain a low frequencies prevents the propagation of noise. The amplifier (100) of the present invention can be cascaded to an, for example, 3 stage amplifier arrangement (300).

REFERENCES:
patent: 4484148 (1984-11-01), Wieser et al.
patent: 5497125 (1996-03-01), Royds

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