A 3.00 m diameter university communications satellite dish receives TV signals that have a maximum electric field strength (for one channel) of 7.60 µV/m. (See the figure below.) What is the intensity (in watts per meter squared) of this wave? What is the power received (in watts) by the antenna? If the orbiting satellite broadcasts uniformly over an area of 1.50 1013 m2 (a large fraction of North America), how much power (in watts) does it radiate?
A 3.00 m diameter university communications satellite dish receives TV signals that have a maximum electric field strength (for one channel) of 7.60 µV/m. (See the figure below.) What is the intensity (in watts per meter squared) of this wave? What is the power received (in watts) by the antenna? If the orbiting satellite broadcasts uniformly over an area of 1.50 1013 m2 (a large fraction of North America), how much power (in watts) does it radiate?
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ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
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A 3.00 m diameter university communications satellite dish receives TV signals that have a maximum electric field strength (for one channel) of 7.60 µV/m. (See the figure below.) What is the intensity (in watts per meter squared) of this wave? What is the power received (in watts) by the antenna? If the orbiting satellite broadcasts uniformly over an area of 1.50 1013 m2 (a large fraction of North America), how much power (in watts) does it
Transcribed Image Text:**Satellite Dish Diagram**
The diagram illustrates a satellite dish receiving signals. The components and processes are explained in detail below:
- **Parabolic Reflector**: The large, concave dish made of metal or a similar conductive material. Its parabolic shape is crucial for focusing incoming electromagnetic waves (depicted as blue squiggly lines) onto a central point.
- **Feed Horn**: Positioned at the focal point of the parabolic reflector, this small device collects the focused signals. It is usually attached to the support arms that extend from the edges of the dish.
- **Support Structure**: The frame and arms that hold the feed horn in place and connect it to the parabolic reflector. Made of sturdy materials to withstand various weather conditions.
- **Base and Mounting Pole**: Provides stability to the satellite dish, allowing it to stand upright. The mounting mechanism often allows for adjustments in height and angle to optimize signal reception.
- **Signal Representation**: Blue squiggly lines represent the radio waves or signals coming from a satellite in space, converging toward the focal point of the reflector where the feed horn is located.
This setup enables the satellite dish to receive data from communication satellites, facilitating television broadcasting, internet connectivity, and other telecommunications services. The precise alignment of the dish is crucial for optimal signal reception.
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