The three characteristics of waves that can be modulated are phase, frequency, and this.
What is amplitude?
100
LF and HF passive tags use this kind of coupling method.
What is inductive.
100
A hypothetical antenna radiating the same intensity of radio waves in all directions.
What is isotropic?
100
The effect on RF signals in metal is this.
What is reflection?
100
Gen 2 tags operate in the UHF range which is what?
What is 860 MHz to 960 MHz?
200
ASK is an acronym for this type of modulation.
What is Amplitude Shift Keying.
200
The size of the tag is dependant on the size of this.
What is the antenna?
200
In this antenna, the direction of the coil determines its polarization.
What is helical?
200
The combination of a substrate, an antenna, and an IC make up this.
What is an inlay?
200
The Gen 2 frequency allocation is this range.
What is 902 MHz to 928 MHz?
300
With this encoding, the timing problem is solved by having a transition occur at both the start and at the end of every bit. If the bit is a zero, an additional transition occurs in the middle of the bit.
What is FM0 Encoding?
300
The three main components of an RFID tag are the chip, antenna, and this.
What is the substrate?
300
This is known as the principle of changing the direction of the magnetic field.
What is polarization?
300
The effect on RF signals in glass is this.
What is attenuation?
300
Gen 2 tags are restricted to the 26-MHz wide range in North America has this many channels.
What is 50 channels?
400
This is defined as representing binary 1s and 0s by forcing transitions in a waveform.
What is encoding?
400
UHF passive tags use this type of coupling.
What is backscatter?
400
This kind of dipole antenna consists of two or more straight electric conductors that are connected in parallel.
What is folded?
400
The effect on RF signals on the human body is this.
What is absorption; detuning; reflection? (one of three is ok)
400
In this environment, no other reader is within range.
What is a single interrogator environment?
500
This type of modulation occurs when there is a sudden 180° phase shift in the carrier waveform.
What is Phase Shift Keying?
500
A beacon is this kind of a tag?
What is an active tag?
500
This type of antenna has a straight electric conductor, usually made of copper. There are at least 4 varieties.
What is dipole?
500
The effect on RF signals on corrugated cardboard is this.
What is absorption?
500
The tag modulates the reflected carrier, producing this on either side of the carrier.