F.2 Transmitting path

05.053GPPRadio transmission and receptionTS

Unless otherwise stated, the requirements in this clause apply at all frequencies in the transmit band 450,4 MHz to 457,6 MHz for a GSM 450 AFLC, at all frequencies in the transmit band 478,8 MHz to486 MHz for a GSM 480 AFLC, at all frequencies in the transmit band 880 MHz to 915 MHz for a GSM 900 AFLC, and at all frequencies in the transmit band 1 710 MHz to 1 785 MHz, for a DCS 1 800 AFLC. For a multi band AFLC, which supports more than one, the requirements apply in any transmit bands implemented.

F.2.1 Maximum output power

With a GSM input signal at a level of X dBm, the maximum output power shall be less than a level of Y dBm. The values of X and Y for GSM 400, GSM 900 and DCS 1 800 are given in table F.1.

Table F.1: Input and output levels for testing maximum output power

GSM 400 and GSM 900

DCS 1 800

X

+39 dBm

+36 dBm

Y

+35 dBm

+32 dBm

F.2.2 Gain

With a GSM input signal, at a level which produces the maximum rated output power, the AFLC gain shall be 0 dB with a tolerance of ±1 dB, over the relevant transmit band.

For a GSM 400 and GSM 900 AFLC, with the input level reduced in 14 steps of 2 dB, the net path gain over the relevant transmit band shall be 0 dB, with a tolerance of ±1 dB, for the first 10 reduced input levels and ±2 dB for the 4 lowest input levels.

For a DCS 1 800 AFLC, with the input level reduced in 15 steps of 2 dB, the net path gain over the relevant transmit band shall be 0 dB, with a tolerance of ±1 dB, for the first 13 reduced input levels and ±2 dB for the 2 lowest input levels.

In frequency bands which are not supported, the gain shall be no greater than the maximum value in the relevant transmit band.

F.2.3 Burst transmission characteristics

With a GSM input signal, the shape of the GSM AFLC output signal related to this input signal shall meet the tolerances of tables F2a and F3. With a DCS input signal, the shape of the DCS AFLC shall meet the tolerances of tables F2b and F3.

NOTE: The tolerances on the output signal correspond to the time mask of 3GPP TS 05.05, with the input signal in the middle of the tolerance field.

Table F.2a: Timing tolerances between input and output signals for a GSM AFLC

Input signal level

Input signal time

Output signal level

Tolerances ‑ output signal time

‑59 dBc (or ‑54 dBm whichever is greater)

t59

‑59 dBc

t59 ± 14 µs

‑30 dBc

t30

‑30 dBc

t30 ± 9 µs

‑6 dBc

t6

‑6 dBc

t6 ± 5 µs

Table F.2b: Timing tolerances between input and output signals for a DCS AFLC

Input signal level

Input signal time

Output signal level

Tolerances ‑ output signal time

‑48 dBc (or ‑48 dBm. whichever is greater)

t48

‑48 dBc

t48 ± 14 µs

‑30 dBc

t30

‑30 dBc

t30 ± 9 µs

‑6 dBc

t6

‑6 dBc

t6 ± 5 µs

The input signal time is the time at which the input level crosses the corresponding signal level. The above requirements apply to both the rising and falling edge of the burst.

Table F.3: Signal level tolerances for both GSM and DCS AFLC

Range

Tolerances ‑ output signal level

t6……….t6 ± 5 µs (rising edge)

‑6……….+4 dB

t6……….t6 ± 5 µs (falling edge)

‑6……….+1 dB

147 useful bits

± 1 dB

All input signal levels are relative to the average power level over the 147 useful bits of the input signal. All output signal levels are relative to the average power level over the 147 useful bits of the output signal.

F.2.4 Phase error

The increase in phase error of a GSM input signal, which meets the phase error requirements of 3GPP TS 05.05, shall be no greater than 2 degrees RMS and 8 degrees peak.

F.2.5 Frequency error

The increase in frequency error of a GSM input signal, which meets the frequency accuracy requirements of 3GPP TS 05.10, shall be no greater than 0,05 ppm.

F.2.6 Group delay

The absolute value of the group delay (signal propagation delay) shall not exceed 500 ns.

F.2.7 Spurious emissions

With a GSM input signal corresponding to an MS transmitting at +39 dBm for a GSM 900 AFLC and at +36 dBm for a DCS 1 800 AFLC, the peak power of any single spurious emission measured in a bandwidth according to table F.4, shall be no greater than ‑36 dBm in the relevant transmit band

Table F.4: Transmit band spurious emissions measurement conditions

Band

Frequency

Measurement bandwidth

offset from test signal freq.

relevant transmit band

 1,8 MHz

30 kHz

and < 2 MHz offset from band edge

 6,0 MHz

100 kHz

Outside of this transmit band, the power measured in the bandwidths according to table F.5 below, shall be no greater than:

‑ 250 nW (‑36 dBm) in the frequency band 9 kHz ‑ 1 GHz;

‑ 1 W (‑30 dBm) in the frequency band 1 ‑ 12,75 GHz

Table F.5: Out of band spurious emissions measurement conditions

Band

Frequency offset

Measurement Bandwidth

100 kHz ‑ 50 MHz

10 kHz

50 MHz ‑500 MHz

100 kHz

above 500 MHz but excluding the transmit band

(offset from edge of the transmit band)

 2 MHz

30 kHz

 5 MHz

100 kHz

 10 MHz

300 kHz

 20 MHz

1 MHz

 30 MHz

3 MHz

In the band 935 ‑ 960 MHz, the power measured in any 100 kHz band shall be no more than ‑79 dBm, in the band 925 ‑ 935, 460.4 – 467.6 MHz and 488.8 – 496 MHz, shall be no more than ‑67 dBm and in the band 1 805 ‑ 1 880 MHz, shall be no more than ‑71 dBm.

With no input signal and the MS input port terminated and unterminated, the peak power of any single spurious emission measured in a 100 kHz bandwidth shall be no greater than:

‑ 2 nW (‑57 dBm) in the frequency bands 9 kHz ‑ 880 MHz, 915 ‑ 1 000 MHz;

‑ 1,25 nW (‑59 dBm) in the frequency band 880 ‑ 915 MHz;

‑ 5 nW (‑53 dBm) in the frequency band 1 710 ‑ 1 785 MH;

‑ 20 nW (‑47 dBm) in the frequency bands 1 000 ‑ 1 710 MHz, 1 785 ‑ 12 750 MHz.

F.2.8 VSWR

The VSWR shall be less than 1.7:1 at the RF port of the device which is intended to be connected to the MS. The VSWR shall be less than 2:1 at the RF port of the device which is intended to be connected to the antenna.

F.2.9 Stability

The AFLC shall be unconditionally stable.