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What is gain in RFID?

  • Administrator
  • 12/20/2025

Gain (usually of an antenna) or power gain measures how effectively the antenna directs RF energy in a particular direction compared with a reference (isotropic). Higher gain can increase communication range and signal quality.

What is receiver sensitivity?

  • Administrator
  • 12/20/2025

Receiver sensitivity is the minimum RF signal level at which a receiver can reliably decode incoming data. Higher (more negative) sensitivity means better ability to detect weak signals, extending read range and performance.

What factors affect RF wireless communication in RFID?

  • Administrator
  • 12/20/2025

Key factors include:
  • RF signal attenuation (distance and obstacles)
  • Tag and reader antenna orientation and design
  • Materials near tags (metals, liquids)
  • Environmental interference
These influence read range and reliability.

What are the main components of RF wireless communication?

  • Administrator
  • 12/20/2025

Typical RF systems include:
  • Oscillator (generates RF signals)
  • Modulator/demodulator
  • Transmitter/receiver antennas
  • Filters and amplifiers (e.g., low-noise amplifiers)
  • Power amplifier and RF front-end circuitry
These parts work together to send and receive RF signals.

What are the types of RF communication technologies?

  • Administrator
  • 12/20/2025

Common RF technologies include:
  • Bluetooth
  • Wi-Fi
  • NFC (Near Field Communication)
  • RFID (Radio Frequency Identification)
  • Zigbee, LoRa, and other LPWAN tech
  • Cellular (LTE, NB-IoT)
These differ in range, power, modulation, and application areas.

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