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What should I consider when choosing an RFID antenna?
Because RFID antennas radiate and receive RF waves, polarization is an important factor to consider when choosing an RFID antenna. Polarization applies to waves and is basically the geometrical direction of the wave’s oscillation.
Where does the RF signal come from on a RFID reader?
Current RF transmitters send the signal in a broad pattern that radiates from the tip of the reader’s antenna. As a result, much of the signal is wasted. Honeywell engineers designed an inexpensive, reconfigurable antenna that concentrates all the RF power generated by the reader in a single direction.
When to use a linear polarized RFID antenna?
Since the RFID antenna continuously emits a wavelength the rotational field will eventually cover any tag that is in its path. This is best to use when tag orientation is unknown, but you lose at least 3dB when compared to a linear polarized antenna.
Is there such a thing as an isotropic RFID antenna?
An isotropic antenna is one which emits an RF field uniformly in all directions. A perfect isotropic RFID antenna, or one that emits radio waves in general, doesn’t exist because the concept violates Maxwell’s equations.
What kind of antenna does Laird connectivity use?
Laird Connectivity’s RFID Antennas are engineered for high-capacity and long-range tracking in dense applications. Our industry renowned design methodology achieves maximum efficiency and performance across the entire RFID antenna’s frequency band. RFID applications and requirements can vary significantly.
Can a far field antenna read from a near field antenna?
Near-field antennas usually cannot read more than a foot away at the most because their magnetic field and the tag antenna’s magnetic field must be close enough to send and receive information. Far-field antennas use backscatter to communicate.
What kind of RFID antenna does zebra use?
The AN720 compact RFID antenna is designed for indoor and outdoor environments, and is impact and vibration resistant. Detect and record the movement of RFID-tagged inventory from the moment it enters your backroom or warehouse to the moment it leaves with the Zebra SR5502 Backroom/Warehouse Antenna.