Week 3 Forum ISSC 343 - There are two main types of...

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There are two main types of antennas: Passive and Active. “A passive antenna does not amplify the signal in any way; it can only radiate a signal with the same amount of energy that appears at the antenna connector, after any cable and connector losses.” (Olenewa, 2013, pg. 139). An active antenna is the same thing except with an amplifier that is built into the device. Within those two types of antennas there are also two more types: Directional and Omnidirectional. Omnidirectional antennas are used to transmit and receive signals from all directions with relatively equal intensity. (Olenewa, 2013, pg. 139). A directional antenna is the opposite, it transmit its signal in one direction. There are a few different types of directional antennas as well: Yagi antenna, Parabolic dish antenna, and a Patch antenna. “A yagi antennaemits a wider, less-focused RF energy beam, whereas a parabolic dish antenna emits a narrow, more concentrated beam of RF energy.” (Olenewa, 2013, pg. 140). Patch antennas emit an RF energy beam that is horizontally wide but vertically taller than that of a yagi antenna.
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  • Winter '15
  • George Mikulski
  • Radio frequency antenna types, Yagi antenna, Directional antenna, parabolic dish antenna, Mobile Mark

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