Shenzhen ATNJ Communication Technology Co., Ltd., founded in 2010, is a company that integrates research and development, manufacturing, sales, and technical services. It is a professional radio frequency (RF) product manufacturer with mature experience. The main products include custom-developed SDR digital core boards, LTE/NR (micro, medium, high) power series analog/digital optical fiber digital selective band repeaters & DAS systems, wireless frequency modules, passive modules, public and private network systems, and base station technology solutions. Additionally, the company undertakes various RF and wireless repeater operation and maintenance services and projects, multi-band, multi-sub-band, multi-MIMO DAS systems, remote network management center OAM, and supplies for indoor and outdoor signal coverage projects.
Here we highlight the key service that guarantees our unwavering commitment :
①. Active DAS: Off-air repeater, frequency shift repeater, fiber optic repeater, and inline booster.
②. In cabinet active RF module&parts: LNA, PA, optic transceiver, channel/band selector, frequency shifter, bias tee, PSU.
③. In cabinet passive RF module&parts: multiplexer, filter, channel combiner, semi-rigid/flexible jumper.
④. Passive DAS: POI, multi-band combiner, hybrid combiner, splitter, coupler, tapper, cable assembly, antenna.
⑤. SDR (Software Defined Radio) Core Board Custom Development and Solutions.
⑥. Phased array radar technology and software algorithm.
⑦. ECM system.
⑧. Critical communications solution.
⑨. Public/private network BTS solution.
Range
This product is designed for fiber optic repeaters in mobile communication systems, facilitating the photoelectric conversion and transmission of uplink and downlink signals for the repeaters.
RF Technical Specifications
Table 1. RF Index
Specifications
Index
Notes
Frequency band
800-2700MHz
The primary test frequency bands cover the 2G/3G/4G spectrums currently deployed by China Mobile, China Unicom, and China Telecom
Transmit optical wavelength
1550±20nm
Receive optical wavelength
1310±20nm
Cascade Stages
1 take 4
Optical Output Power
-3±1dBm
Optical Port Power Measurement Using Optical Power Meter
4dBm±1dBm
Laser Emission Power Verification via GUI Software
Transmit Loss of Light
(TXLOL)
≤-3dBm
IF (Laser Output Power ≤ -3dBm ±0.2dB) THEN ASSERT "TX_OPD_ALARM"ELSE MAINTAIN "NORMAL_OPERATION_STATE"
Receive Loss of Signal
(RXLOS)
≤-10dBm
Link gain
UL:0±2.5dB
Direct or single-drop connection
DL:0±2.5dB
Automatic Gain Compensation (AGC) Function
Insertion Loss of 1x4 Headend Module Connection≤3dB
Asymmetric Gain Compensation with Variation Rate of±2dB
Flatness In Band
824~835MHz,869~880MHz,890~915MHz,935~960MHz,1710~1785MHz,1805~1880MHz,1880~1920MHz,1920~1980MHz,2110~2170MHz,2320~2370MHz≤1dB
2515~2675MHz≤2dB
VSWR
≤1.5
Second Harmonic Component
890MHz input -13dBm,1780MHz output≤-80dBm
Intermodulation
UL:≤-55dBc,(-8dBm input/2CH)Total input powe-5dBm,per carrier is 8dBm
Test 1:Near/Far End 1+1 Testing @ 600kHz Spacing; (Final results subject to your company's test data)
DL:≤-60dBc(-3dBm input/2CH) Total input powe0dBm,per carrier is 3dBm
Noise floor
UL
≤-130dBm/Hz
LINK GAIN=0dB,Test Configuration: Cascaded 1:1 Connection (AGC Compensation Enabled)(Final results subject to your company's test data)
DL
≤-125dBm/Hz
RF isolation
≥50dB
Delay
≤100ns
Gain Adjustment Range
≥15dB
MU Uplink
Gain Step Size
1dB
MU Uplink
Gain Setting Error
0~15 error≤1dB;
MU Uplink
Working temperature
-20~70℃
Power supply
DC+9V~+12V,Power consumption less than 4W
Monitoring Interface
Equipped with a DB9 female connector providing two RS485 interface; Communication baud rate: 9600 bps
WDM
Built-in