Test

impossible

98dBµ

LA1175, 1175M

No.2276-8/14

Cross point

The open input level of undesired signal 2 at which the IM output and desired signal output are at the same level.

IM output

• Desired signal

: Non-mod at each specified input

• Undesired signal 1

: Non-mod at input 132dBµ (SG open)

• Undesired signal 2

: 100% mod with input variable

Desired signal output • Desired signal

: 100% at each specified input

• Undesired signal 1

: Non-mod at input 132dBµ (SG open)

• Undesired signal 2

: Non-mod with input variable

Desired input level

With ANT damping

RF AGC and

ANTD AGC

Without ANT

damping

RF AGC only

50dBµ

90.5dBµ

109dBµ

123dBµ

59.5dBµ

72dBµ

89dBµ

60dBµ

70dBµ

80dBµ

Improvement

31dB

37dB

34dB

Refer to Fig. A.

Refer to Fig. B.

Undesired input 2 – dBµ

Fig. A Intermodulation Characteristic

(with ANT damping)

Undesired input 2 – dBµ

Fig. B Intermodulation Characteristic

(with ANT damping)

Solid line

Broken line

Intermodulation dummy

Intermodulation dummy

Solid line

Broken line

Unit (resistance :

Ω, capacitance F)