NXP Semiconductors

AN11010

Ku band LNA using BFU730F

AN11010

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Application note

Rev. 1.0 — 11 January 2011

11 of 20

4.5.3 Linearity / OIP3 – typical values

IIO3 = OIP3 – Gain = 21.3dBm – 11dB = 10.3dBm

Fig 11. BFU730F Ku band LNA – Linearity measurement plot

4.5.4 Gain, NF, Current vs temperature

BFU730F Ku LNA exhibits less than 1dB gain variation for temperature varying in the

range of: -40ºC to +85ºC

Table 3.

Gain / NF vs Temp

BFU730F EvB4 tested for Gain and NF variation over temperature

[1]

Temperature (ºC)

Icc (mA)

NF (dB)

Gain (dB)

+25

11.6

1.45

10.7

+50

11.4

1.6

10.65

+70

11.1

1.75

10.6

+85

11.0

1.8

10.55

-10

11.8

1.2

11.2

-25

11.9

1.15

11.2

-40

12

1.1

11.25

[1]

Measurements have been focused on relative variation of the Gain and NF vs. temperature, however the

absolute numbers might not be accurate. NF and Gain plots are available by request.