Unformatted text preview: (b) Plot the input (G S ) and the output (G L ) constant-gain circles for 2, 1, 0, and -1 dB. Q3 Data for the HXTR-6101 silicon bipolar transistor at 4 GHz with a 50 ohms reference are: S 11 = 0.522 /-169 o S 12 = 0 S 21 = 0.839 /-67 o S 22 = 1.681 /26 o F min = 3.5 dB Γ opt = 0.475 /166 o R N = 3.5 Ω Draw the F = 3 dB noise figure circle and the G S = 0 dB circle. From these determine the source reflection coefficients, and hence the source impedance required to realize both values. What is the maximum available gain under these conditions?...
View Full Document
This note was uploaded on 10/21/2011 for the course EE 44101 taught by Professor Huihoontat during the Spring '11 term at National University of Singapore.
- Spring '11