User Manual

ALLGON SYSTEM AB - Proprietary
Technical Specification for PCS Tower Top Power Amplifier [Allgon 9256]
Preliminary
-
Subjected
to change without notice
Rev.pA0
File: 93651
Page 12 (19) 29 Mar 00
3.5.6 TX Gain Tolerance
Measured with AGC in operation.
Nominal gain ± 0.5 dB
3.5.7 TX Gain Ripple
Ripple is defined as [MaxGain(inband) - MinGain(inband)]
Max: 1 dB
3.5.8 TX AGC Operation
The AGC system continuously holds the TX-gain at nominal value.
If the system fails to regulate the power a PA-fail alarm is generated.
The AGC time constant is chosen to compensate for thermal and other long term drift.
Minimum average input power level for AGC operation: +20 dBm.
TX gain tolerance with AGC not operating: ±1.5dB.
3.5.9 TX Stability
The TX-amplifier is unconditionally stable for all passive loads at input and output.
3.5.10 TX Spurious Emissions and Broadband Noise
Measured at ANT port, with the TTPA operating at nominal output power.
Peak power and measurement bandwidth as listed in table.
Outside TX band:
Frequency band Max peak power / Bandwidth
RX band - 128 dBm / 100 kHz
1850-1910 MHz - 98 dBm / 100 kHz
824 - 849 MHz - 98 dBm / 100 kHz
100 kHz - 50 MHz - 36 dBm / 10 kHz
50-1000 MHz - 36 dBm / 100 kHz
1 – 12.75 GHz, outside TX band >+ 2 MHz - 30 dBm / 30 kHz
“ >+ 5
MHz
- 30 dBm / 100 kHz
“ >+ 10
MHz
- 30 dBm / 300 kHz
“ >+ 20
MHz
- 30 dBm / 1 MHz
“ >+ 30
MHz
- 30 dBm / 3 MHz
Inside TX band:
Frequency band Max peak power / Bandwidth
Carrier offset > + 1.8 MHz - 36 dBm / 30 kHz
Carrier offset > + 6 MHz - 36 dBm / 100 kHz