User Manual

Explanation of Test Points

All measurements were taken using the “Continuous

Transmit” or “Continuous Receive” features of the PTU

diagnostic software. Unless otherwise noted, spectrum

measurements included in this section were obtained using

a Hewlett-Packard 54006A 500Ω probe and 11742A coaxial

blocking capacitor and do not indicate the actual amplitude

of the signal owing to losses associated with the probe.

Unless noted, 11Mbps CCK modulation was employed.

Many of the signals are differential (i.e., balanced with

respect to ground). These are denoted by + (plus) and

- (minus) symbols following the signal name (e.g., RX I+ and

RX I-).

Test Points A- A1, and B-B1

Transmit I and Q:

NOTE: BPSK mode is used for the plots in this figure. Therefore, I

and Q are identical.

TABLE 1. HIGH GAIN PARAMETERS

PART

REFERENCE NF GAIN OCP OIP3 CUM NF CUM GAIN ICP OIP3 IIP3

UPG152TA2 -227502.00-22950.0052.00

LTF3216L 1 -1 99 99 3.00 -3 29 49.00 52.00

LFSN30172450 2 -2 99 99 5.00 -5 29 47.00 52.00

UPG152TA2 -227507.00-72943.8150.81

HFA3683A 3.7 25 -7.5 12 10.70 18 -25.5 12.00 -6.00

SAW374M 8.5 -8.5 99 99 10.74 9.5 -25.5 3.50 -6.00

HFA3783 7 61 -14.3 1.5 10.90 70.5 -84.8 1.50 -69.00

TABLE 2. LOW GAIN PARAMETERS

PART

REFERENCE NF GAIN OCP OIP3 CUM NF CUM GAIN ICP OIP3 IIP3

UPG152TA 2 -2 27 50 2.00 -2 29 50.00 52.00

LTF3216L 1 -1 99 99 3.00 -3 29 49.00 52.00

LFSN30172450 2 -2 99 99 5.00 -5 29 47.00 52.00

UPG152TA 2 -2 27 50 7.00 -7 29 43.81 50.81

HFA3683A 3.7 -9 -7.5 12 10.70 -16 8.5 11.98 27.98

SAW374M 8.5 -8.5 99 99 24.04 -24.5 8.5 3.48 27.98

HFA3783 7 -72 -14.3 1.5 31.41 -96.5 8.5 -68.52 27.98

FIGURE 7. TRANSMIT I AND Q SIGNALS AT THE OUTPUT

OF THE HFA3861 (TEST POINTS A-A1 AND B-B1)

Application Note 9949