DM222 Beidou-3 Short Message Communication Module

DM222

TheDM222moduleisashortmessagecommunicationmodulefortheBeidou-3system,developedbasedonthe"Dolphin-3"basebandchipindependentlydesignedbyChangshaJinwei.ItenablesregionalshortmessagecommunicationfortheBeidou-3systemandiscompatiblewiththecommunicationfunctionsofBeidou-2.ThemoduleintegratesLNA,RDSSradiofrequencytransceiverchips,5Wpoweramplifier,andBeidou-3dedicatedbasebandcircuits.Itadoptsa30mm×35mmsizes..

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Product features

全面支持北斗三号区域短报文应用
Supports 1000-character communication Passed the network test verification Complies with the Beidou transmission power requirements
Strong anti-interference capability
It has the function of suppressing adjacent-frequency signal interference such as WIFI, Bluetooth and 4G, resulting in more stable performance.
High-integration standard packaging
Built-in LNA and PA, with a classic size of 30mm × 35mm, SMD stamp packaging, making it more convenient to use
Stable production, mature process
After being verified by numerous customers in various industries and applications, the performance is more reliable.

Technical Index

performance index	Performance of RDSS	Receiving frequency point	Receive the outgoing signals from S1I and S2C, with the frequency range: 2491.75 MHz ± 8.16 MHz
		Receive sensitivity	S1I: When the signal power is -127.6 dBm, the bit error rate is: ≤ 1×10-5
			S2C: 24kbps information frame, bit error rate: ≤ 1×10-5 (signal power - 123.8 dBm)
			S2C: 16kbps information frame, bit error rate: ≤ 1×10-5 (signal power - 127.5 dBm)
			S2C: 8kbps information frame, bit error rate: ≤ 1×10-5 (signal power - 130dBm)
		Number of receiving beams	Beidou-2: 10; Beidou-3: 14
		Transmitting frequency point	Lf0 ：1615.68 MHz±4.08MHz
			Lf1 ：1614.26 MHz±4.08MHz
			Lf2 ：1618.34 MHz±4.08MHz
		Transmitted power	6dBW~8dBW（5W power amplifier）
		Accuracy of transmission frequency	≤5×10^-7
		Phase error of transmitted signal modulation	≤3°
		Short message communication capacity	The maximum length of a single message for Beidou-2 is 120 Chinese characters.
			The maximum length of the regional message for Beidou-3 is 1,000 Chinese characters.
		Anti-narrowband interference	Special section: 16kbps information frame, signal power -120dBm, dry signal ratio not less than 60dBc
	Power characteristics	Receiving working voltage: +3.6V to +5.5V. Recommended: 3.7V
		Power amplifier operating voltage: +4.5V to +5.5V
	Power dissipation	Operating power consumption: ≤ 160mA @ +3.7V
		Power consumption during launch: ≤ 3.5A @ 5V
physical property	Structure size		30mm×35mm×3.7mm（±0.2mm）
	Encapsulation mode		SMD Postmark hole
	Weight		≤8g
environmental index	Operating temperature		-40℃~+85℃
	Storage temperature		-40℃~+85℃