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參數(shù)資料
| 型號(hào)： | ACPM-7813-TR1 |
| 英文描述： | CDMA/AMPS Power Amplifier Module |
| 中文描述： | 碼分多址/ AMPS二元功率放大器模塊 |
| 文件頁數(shù)： | 14/21頁 |
| 文件大?。?/td> | 183K |
| 代理商： | ACPM-7813-TR1 |
14
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 measure-
ment often is specified as the
ratio of the power spectral
density (PSD) of the CDMA main
channel to the PSD measured at
Figure 18. CDMA Adjacent-Channel Power Ratio Measurement.
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).
0
-10
-20
-30
-40
-50
-60
-70
-80
30 kHz
30 kHz
30 kHz
30 kHz
1.23 MHz
1st ACPR-U
1st ACPR-L
2nd ACPR-L
= 1.98 MHz
2nd ACPR-U
= 1.98 MHz
Offset frequency
1st ACPR (dBc)
2nd ACPR (dBc)
FREQUENCY (MHz)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ACPM-7821 | 制造商:AVAGO 制造商全稱:AVAGO TECHNOLOGIES LIMITED 功能描述:4 x 4 Power Amplifier Module for J-CDMA (898 - 925 MHz) |
| ACPM-7821-BLK | 制造商:AVAGO 制造商全稱:AVAGO TECHNOLOGIES LIMITED 功能描述:4 x 4 Power Amplifier Module for J-CDMA (898 - 925 MHz) |
| ACPM-7821-TR1 | 制造商:AVAGO 制造商全稱:AVAGO TECHNOLOGIES LIMITED 功能描述:4 x 4 Power Amplifier Module for J-CDMA (898 - 925 MHz) |
| ACPM-7822 | 制造商:AVAGO 制造商全稱:AVAGO TECHNOLOGIES LIMITED 功能描述:JCDMA 4x4 Power Amplifier Module (898-925MHz) |
| ACPM-7822-BLK | 制造商:AVAGO 制造商全稱:AVAGO TECHNOLOGIES LIMITED 功能描述:JCDMA 4x4 Power Amplifier Module (898-925MHz) |
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