acpm-7813 Avago Technologies, acpm-7813 Datasheet - Page 14

no-image

acpm-7813

Manufacturer Part Number
acpm-7813
Description
Cdma/amps Power Amplifier Module
Manufacturer
Avago Technologies
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ACPM-7813
Manufacturer:
AVAGO
Quantity:
700
Part Number:
acpm-7813-BLK
Manufacturer:
AVAGO/安华高
Quantity:
20 000
Part Number:
acpm-7813-TR1
Manufacturer:
AVAGO
Quantity:
16 950
Part Number:
acpm-7813-TR1
Manufacturer:
AVAGO/安华高
Quantity:
20 000
ACPR Measurement Method
Adjacent-channel power ratio (ACPR) is used to
characterize the distortion of power amplifiers and
other subsystems for their tendency to cause
interference with neighboring radio channels or
systems. The ACPR measurement often is specified as
the ratio of the power spectral density (PSD) of the
CDMA main channel to the PSD measured at several
offset frequencies. For the Cellular band (824 ~
849 MHz transmitter channel), the two offsets are at
±885 kHz and ±1.98 MHz and the measurement
resolution bandwidth specified is 30 kHz. These offsets
are at ±1.25 MHz and ±1.98 MHz for the PCS band
(1850 ~ 1910 MHz transmitter channel).
Figure 18. CDMA Adjacent-Channel Power Ratio Measurement.
-10
-20
-30
-40
-50
-60
-70
-80
14
0
30 kHz
30 kHz
2 nd ACPR-L
= 1.98 MHz
1 st ACPR-L
FREQUENCY (MHz)
Offset frequency
1.23 MHz
1 st ACPR-U
2 nd ACPR-U
= 1.98 MHz
30 kHz
30 kHz
1st ACPR (dBc)
2nd ACPR (dBc)

Related parts for acpm-7813