frequency-dat
common frequency
315 - RF-dat
- 868 915 == lora-dat - CDMA-dat - RFID-dat
- 433 - lora-dat - RF-dat
- 470 / 490 mhz - lora-dat
- 800 / 1800 mhz == 4G-dat - 3G-dat - LTE-dat - GPRS-dat - NBIOT-dat - GSM-dat
- 2200 - LTE-dat
- 2400 - wifi-dat - bluetooth-dat - RF-dat - zigbee-dat
- GPS-dat - GNSS-dat - location-dat
ISM bands
China has several ISM (Industrial, Scientific, and Medical) bands available for low-power, short-range devices. The primary bands are:
- 470-510 MHz: This is the main band designated for LoRaWAN and other LPWAN technologies in China.
- 779-787 MHz: Another band available for short-range devices.
- 920-925 MHz: This band is also used, though it's narrower than in other regions.
- 433.05-434.79 MHz: The standard 433 MHz ISM band.
- 2.4 GHz: The global 2.4 GHz band is available.
- 5.8 GHz: The global 5.8 GHz band is also available.
For LoRaWAN applications, the 470-510 MHz band is the most significant and widely deployed in China.
🔐 1. Anti-Theft Tags (EAS – Electronic Article Surveillance)
These are common in retail stores to prevent theft. They are not RFID but use simpler tech.
- Frequency: 8.2 MHz (RF system, most common)
-
Other types:
- 58 kHz (AM system – Acousto-Magnetic)
- Radio Frequency (RF): 8.2 MHz
- Microwave: 2.45 GHz (rare)
📡 2. RFID Tags in Clothing
Used for inventory, supply chain, smart fitting rooms, etc.
🔸 a. UHF (Ultra High Frequency) RFID
- Frequency: 860–960 MHz
- Most common in retail for clothing
- Read range: Up to 10 meters
- Standard: EPC Gen 2 / ISO 18000-6C
🔸 b. HF (High Frequency) RFID
- Frequency: 13.56 MHz
- Used in smart labels, near-field communication (NFC)
- Read range: ~10 cm
- Standard: ISO 14443 or ISO 15693
✅ Summary Table
| Tag Type | Frequency | Use |
|---|---|---|
| EAS RF | 8.2 MHz | Anti-theft (retail) |
| EAS AM | 58 kHz | Anti-theft (retail) |
| RFID HF | 13.56 MHz | Inventory, NFC, smart tags |
| RFID UHF | 860–960 MHz | Inventory, long-range scans |
| Microwave RFID | 2.45 GHz | Rare, high-speed systems |
👕 In Clothing Retail Today
Most clothing stores use:
- EAS RF (8.2 MHz) for anti-theft
- UHF RFID (860–960 MHz) for inventory tracking
Synthesizer
ADF4377BCCZ - Microwave Wideband Synthesizer with Integrated VCO
frequency operator
HMC189AMS8E - Signal Conditioning Passive SMT Freq. Doubler, 2 - 4 GHz
HMC443LP4 / 443LP4E - The HMC443LP4 & HMC443LP4E are active miniature x4 frequency multipliers utilizing InGaP GaAs HBT technology in 4x4 mm leadless surface mount packages.
PLL Frequency Synthesizer
AD4106
frequency multipiler
HMC443LP4 / 443LP4E - SMT GaAs HBT MMIC x4 ACTIVE FREQUENCY MULTIPLIER, 9.8 - 11.2 GHz OUTPUT