Product Technical Specification & Customer Design Guidelines
66
Proprietary and Confidential - Contents subject to change
2400089
Envelope correlation
coefficient between Ant1
and Ant2
< 0.4 on 730–960 MHz band
< 0.3 on 1800–1990 MHz and
2110–2170 MHz bands
< 0.2 on 2600–2700 MHz band
Mean Effective Gain of
Ant1 and Ant2 (MEG1,
MEG2)
-3 dBi
Ant1 and Ant2 Mean
Effective Gain Imbalance I
MEG1 / MEG2 I
< 2 dB for MIMO operation
< 6 dB for diversity operation
Maximum antenna gain
To be determined by the RF
exposure requirements and ERP /
EIRP limits, where applicable.
Isolation between Ant1 and
Ant2 (S21)
> 10 dB
•
If antennas can be moved, test all
positions for both antennas.
•
Make sure all other wireless devices
(Bluetooth or WLAN antennas, etc.) are
turned OFF to avoid interference.
Power handling
•
> 2 W RF power on low bands
•
> 1 W on high bands
•
Measure power endurance over 4 hours
(estimated talk time) using a 2 W CW
signal — set the CW test signal frequency
to the middle of the PCS Tx band
(1880 MHz for PCS).
•
Visually inspect device to ensure there is
no damage to the antenna structure and
matching components.
•
VSWR / TIS / TRP measurements taken
before and after this test must show
similar results.
a. These worst-case VSWR figures for the transmitter bands may not guarantee RSE levels to be within regulatory limits. The
device alone meets all regulatory emissions limits when tested into a cabled (conducted) 50 ohm system. With antenna
designs with up to 2.5:1 VSWR or worse, the radiated emissions could exceed limits. The antenna system may need to be
tuned in order to meet the RSE limits as the complex match between the module and antenna can cause unwanted levels of
emissions. Tuning may include antenna pattern changes, pahse/delay adjustment, passive component matching. Examples of
the application test limits would be included in FCC Part 22 and Part 24, test case 12.2.1 for GSM (3GPP TS 51.010), and test
case 4.2.2 for WCDMA (ETSI EN 301 511).
b. Ant1 — Primary, Ant2 — Secondary (Diversity / MIMO / GPS connector 2)
c. Stated band ranges satisfy requirements for both Ant1 and Ant2.
Table A-1: Antenna requirements (Continued)
a
Parameter
Requirements
Comments
