7787527
Description
Flashcards by Amit Pindoria, updated more than 1 year ago
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Created by Amit Pindoria
about 7 years ago
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| Question | Answer |
| Takes data provided and modifies the AC signal using a Modulation technique | Transmitter |
| Collects the AC signal received from the Transmitter and directs or radiates it out. | Antenna |
| Takes the carrier signal received from the antenna and translate the modulated signals into 1s and 0s | Receiver |
| Power measured at the connector that provides the input to the antenna | Intentional Radiator (IR) |
| - Transmitter - All cables - Connectors - Any other equipment (grounding, lightning arrestors, amplifiers, attenuators) between the transmitter and the and antenna | Components of Intentional Radiator (IR) |
| Highest RF signal strength that is transmitted from a particular antenna | Equivalent Isotopically Radiated Power (EIRP) |
| Relative expression used to represent a difference between two values | Decibel (dB) |
| Used to compare the output of one antenna to another | dBi |
| decibel gain relative to a dipole antenna | dBd |
| Doubles the distance of the usable signal | +6dB |
| Halves the distance of the usable signal | -6dB |
| Modulated or unmodulated Background level of radio energy on a specific channel | Noise Floor |
| Difference in decibels between the received signal and the background noise level | Signal-to-Noise Ratio (SNR) |
| The lower the power level that a receiver can successfully process the better the | Receive sensitivity |
| Power level of an RF signal required to be successfully received by the receiver radio | Received Signal Strength Indicator |
| Sum of all the planned and expected gains and losses from the transmitting radio, through the RF medium, to the receiver radio | Link Budget |
| Level of desired signal above what is required and is Normally used for outdoor WLAN bridge links | Fade Margin / System Operating Margin |
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