RF, the abbreviation of radio frequency.
Radio frequency is radio frequency current, short for high frequency alternating electromagnetic waves. An alternating current that changes less than 1,000 times per second is called a low frequency current, and more than 10,000 times per second called a high frequency current. RF is such a high frequency current.
Radio frequency testing is widely used in the field of communication. In the mobile phone communication industry, a network mobile communication standard will be formed after passing a certain radio frequency test. And its related products are required to carry out this mandatory test when entering the market of all countries.
RF testing applicable to those products:
1. Short-range wireless remote control products (SRD), such as remote control toys, temperature and humidity transmitters, wireless mouse, wireless keyboard, remote control switch, Bluetooth products, smart wearable devices, WiFi products, wireless remote control, ZigBee, LoRa, etc.
2. Professional radio remote control products (PMR), such as professional radio intercom, wireless microphone, wireless telephone CTO, CT1, CT1+… ISDN (digital telephone product), DECT (enhanced digital cordless telephone), GSM, CDMA…. Etc.
3.2g /3G /4G communication products
4. Base station and repeater station
RF testing items:
Spectrum template (SEM)
Conduction spurious (CSE)
The output spectrum
Radiation dispersion (RSE)
Bandwidth Usage (OBW)
The frequency error
Band edge
Phase error
Launch intermodulation
Modulation accuracy (EVM)
The sensitivity
Transmission power
throughput
The code field power
High input level
Power spectral density
Bad frame indication (BFI)
Open loop Power control (OLPC)
Co-channel interference
Closed loop Power Control (CLPC)
Adjacent-channel interference
Transmit switch time template
Receiver intermodulation
Time envelope
Receiver blocking
Adjacent channel leakage ratio (ACLR)
Electromagnetic compatibility immunity
RF testing standards:
3GPP TS 51.010-1 EN 300 328
3GPP TS 34.121-1 EN301893
3GPP TS 34.122 EN 301 511
3GPP TS 36.521-1 EN 300 440
FCC CFR TITLE 47 PART 2 / 22 / 24 / 27 EN 301 908 -1 / 2 / 13
RSS- GEN / 130 / 132 / 133 / 139