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1.4 Parameter Indices
1.4.1 Performance Indices
1. Primary indices of the receiving unit:
Basic indices
1) Frequency range: Work frequency 869MHZ--894MHZ MHz
2) Noise coefficient under sensitivity condition: <=7.5dB (Note: Including
the loss from duplexer)
3) Linearity requirement
4) LNA input P1dB: >-18dBm
5) Amplitude frequency characteristics
6) Amplitude range: <
±
1dB, within 1.23MHz (After being calibrated)}
7) Group delay range: <150nS
2. Primary indices of the emission unit:
1)
Frequency range: 824MHZ--849MHZ MHz
2)
Maximum emission power: >25dBm
3)
ACLR requirement: -42dBc/[email protected]
-56dBc/[email protected]~4MHZ
4)
In-band low-noise requirement
Under the condition of the minimum output power, the low noise should be lower
than -54dBm/1.23MHZ
3. PLL indices:
l
Reference source signal indices:
Frequency
19.2MHz
Frequency error
±
2ppm (-30
0
C
—
85
0
C)
Output signal amplitude
0.8Vpp (min)
Phase noise
=<-113dBc/Hz@100Hz
Output harmonic suppression
>= 30 dBc
l
Indices of emitting intermediate frequency local oscillation signals
1) Output power:
190.75MHz;
2) Phase detection frequency
50kHz
3) Output signal phase noise
<-78dBc/Hz@1KHz
4) <-95dBc/Hz@10KHz
