Help for Smith V3.10 - Fritz Dellsperger

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Constant Gain Circles Select menu „Tools“, „Circles“ or shortcut “Ctrl+T” or click button in toolbox and select tab „Gain“. Select “Available Power Gain”, “Operating Power Gain” or “Unilateral”. Use “Available Power Gain” for low noise amplifiers. Use “Operating Power Gain” for amplifiers with maximum output power, best efficiency or lowest intermodulation. Use “Unilateral” for first approximation of matching network. Enter S-parameter or import parameter from a file. Enter desired Gain for the circle (must be less than Gmax). If Stability factor K1). For unilateral devices S12 is assumed to be zero. Click “Draw”. Continue with entering gain for next circle. Click “Draw”, etc. Constant Gain circles are labeled with „Gn“. n is the number of the circle, starting with number 1. Zoom if necessary. The Constant-Gain-Circle will be described in window “Circles” with following data: 30
� Number Gn of circles � Input or output plane � Gain for the circle � Gmax � S-Parameter � Frequency 1) With the checkboxes in window “Circles” the visibility and highlight of the circle on Smith-Chart can be switched on and off. To remove a circle from Smith-Chart highlight appropriate line in window “Circles” and press “Delete”. 1) Frequency is only assigned to circles if parameters are input from a S-parameter-file. If parameters are input manually or altered, no frequency will be assigned. 31
Page 1 and 2: Help for Smith V3.10 www.fritz.dell
Page 3 and 4: Overview The software is split in t
Page 5 and 6: � Schematic-window Networks on Sm
Page 7 and 8: Menu and ToolbarMenu: Toolbar: All
Page 9 and 10: Input with Keyboard: Continue with
Page 11 and 12: Input of Circuit Elements for the N
Page 13 and 14: Circuit Elements To edit circuit el
Page 15 and 16: Inductor (Serie or parallel element
Page 17 and 18: Physical Transmission Line (Serie e
Page 19 and 20: Open ended Transmission Line, Open
Page 21 and 22: Shorted Transmission Line, Shorted
Page 23 and 24: Transformer (Serie element) Model:
Page 25 and 26: R-L-C serie connected (Parallel ele
Page 27 and 28: Undo and Redo Undo and Redo works o
Page 29 and 30: Datapoint sweep: Example: An antenn
Page 31: Q-circles are not listed in window
Page 35 and 36: Stability-Circles Select menu „To
Page 37 and 38: Constant Noise Figure Circles Selec
Page 39 and 40: Settings Select menu „Extras“,
Page 41 and 42: Print the Smith-Chart Select “Pri
Page 43 and 44: CKT block: This block contains the
Page 45 and 46: S-Plot Read S-Parameter - Files in
Page 47 and 48: The selected line in window “Gain
Page 49 and 50: Export Export H-, Z-, Y- and A-Para
Page 51 and 52: Export CITI to S-Parameter Touchsto
Page 53 and 54: Smith-Chart Basics Smith-Chart Cons
Page 55 and 56: Stability Circles Stability Uncondi
Page 57 and 58: stable stable unstable Unconditiona
Page 59 and 60: G p Power delivered to load PL �
Page 61 and 62: G p � 2 2 S21 �1 ��L �
Page 63 and 64: R C A A � 2 2 12 21 A 12 21 A 1
Page 65 and 66: R C LU LU � LU 2 22 2 � 22 �
Page 67 and 68: File format info Touchstone ® Twop
Page 69 and 70: CITI (Text adopted from Agilent) Ov
Page 71 and 72: EZNEC EZNEC is a very powerful ante
Page 73 and 74: License, Demoversion and Contact Th
Page 75: History Version 3.01 to Version 3.1

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