dish aerial
Học thuậtThân thiện
Definition
- Noun:
- A directional antenna consisting of a parabolic reflector, typically dish-shaped, used for transmitting or receiving microwave or radio frequency radiation, such as for satellite communications or television.
Usage
- The term "dish aerial" is used to describe the physical antenna structure. It is synonymous with "satellite dish" or "parabolic antenna" in common usage.
- It functions by focusing incoming radio waves onto a receiver or directing outgoing waves from a transmitter.
Examples
- Noun:
- We installed a new dish aerial on the roof to get better satellite TV reception.
- The observatory uses a large dish aerial to collect radio signals from space.
Advanced Usage
- Technical Context: In engineering and telecommunications, a "dish aerial" is valued for its high directivity and gain, making it essential for point-to-point communication links.
- "To dish" (slang, unrelated): Note that the verb "to dish" (e.g., to gossip or serve food) is not related to the noun "dish aerial."
Variants and Related Words
- Satellite dish (n): A common term for a dish aerial used specifically for receiving broadcast signals from a communication satellite.
- Parabolic antenna (n): The more technical term for a dish aerial, emphasizing its parabolic reflector shape.
- Dish (n, informal): A shortened, casual form of "dish aerial" or "satellite dish."
- Can you adjust the dish? The signal is weak.
Synonyms
- Parabolic reflector: Highlights the key reflective component.
- Microwave antenna: Describes its common use with microwave frequencies.
Related Phrases
- To have a dish installed: A common phrase meaning to get a satellite television service set up at one's home.
- We decided to have a dish installed to access more channels.
Noun
- directional antenna consisting of a parabolic reflector for microwave or radio frequency radiation