RF Glossary: 0-9 | Terms Starting with 0-9

0-9

3 dB Point — The frequency at which the power response of a device is half (-3 dB) of its maximum value. Defines bandwidth in filters and amplifiers.

3G (Third Generation) — The third generation of mobile telecommunications technology, supporting data rates up to 2 Mbps using WCDMA and CDMA2000 standards.

4G LTE (Fourth Generation Long Term Evolution) — The fourth generation of mobile network technology using OFDMA to deliver data rates up to 100 Mbps, operating in frequency bands from 700 MHz to 2.6 GHz.

5G NR (Fifth Generation New Radio) — The fifth generation mobile standard operating in sub-6 GHz and mmWave bands (24-100 GHz), supporting data rates exceeding 10 Gbps with massive MIMO and beamforming.

50 Ohm — The standard characteristic impedance for most RF and microwave systems, coaxial cables, and test equipment. Chosen as a compromise between minimum loss (77 ohm) and maximum power handling (30 ohm).

60 GHz (V-Band Unlicensed) — An unlicensed frequency band near 60 GHz with very high atmospheric oxygen absorption (~15 dB/km), used for short-range high-bandwidth links like WiGig (802.11ad/ay).

75 Ohm — The standard characteristic impedance for video, cable television, and broadcast systems. Offers lower loss than 50 ohm for receive-only applications.

77 GHz — The frequency band used by automotive radar systems for adaptive cruise control, collision avoidance, and autonomous driving sensors.

802.11 (WiFi Standard) — The IEEE standard family for wireless local area networks operating at 2.4 GHz, 5 GHz, and 6 GHz with successive generations (a/b/g/n/ac/ax/be).

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