MIL-PRF-19500P
APPENDIX B
B.5.2 Microwave diode symbols.
Fo ........................................................... Overall average noise figure (of a mixer diode)
Fos ......................................................... Standard overall average noise figure (of a mixer diode)
Lc ........................................................... Conversion loss
M ............................................................ Figure of merit (of a detector diode)
Nr ........................................................... Output noise ratio
TSS ........................................................ Tangential signal sensitivity
VSWR .................................................... Voltage standing wave ratio
zif ........................................................... Impedance, intermediate-frequency
zrf ........................................................... Impedance, radio-frequency
zm .......................................................... Impedance, modulator-frequency load
zv ........................................................... Video impedance
B.5.3 Tunnel diodes and backward diode symbols.
II ............................................................. Inflection point current
Ip ............................................................ Peak point current
IV............................................................ Valley point current
ri ............................................................. Dynamic resistance at inflection point
VPP ........................................................ Projected peak point voltage
VI............................................................ Inflection point voltage
VP .......................................................... Peak point voltage
VV .......................................................... Valley point voltage
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