parabolic antenna

简明释义

抛物面天线

英英释义

例句

1.The satellite dish on the roof is a type of parabolic antenna 抛物面天线 that receives signals from space.

屋顶上的卫星碟是一个类型的parabolic antenna 抛物面天线，用于接收来自太空的信号。

2.Engineers designed a new parabolic antenna 抛物面天线 to improve communication for remote areas.

工程师设计了一种新的parabolic antenna 抛物面天线，以改善偏远地区的通信。

3.The parabolic antenna 抛物面天线 focuses radio waves onto a single point, enhancing signal strength.

该parabolic antenna 抛物面天线将无线电波聚焦到一个点上，从而增强信号强度。

4.In modern telecommunications, a parabolic antenna 抛物面天线 is essential for satellite internet services.

在现代电信中，parabolic antenna 抛物面天线对于卫星互联网服务至关重要。

5.At the observatory, scientists use a large parabolic antenna 抛物面天线 to study distant galaxies.

在天文台，科学家们使用一个大型的parabolic antenna 抛物面天线来研究遥远的星系。

作文

The world we live in today is heavily influenced by technology, and one of the essential components of modern communication systems is the parabolic antenna. A parabolic antenna (抛物面天线) is a type of antenna that uses a parabolic reflector to direct radio waves. This design allows for high directionality and gain, making it ideal for various applications, including satellite communications, television broadcasting, and radar systems.The basic structure of a parabolic antenna consists of a parabolic-shaped dish that reflects signals towards a focal point where the feed antenna is located. The shape of the dish is crucial because it ensures that incoming signals are reflected to a single point, enhancing the strength of the received signal. This characteristic makes the parabolic antenna exceptionally efficient in capturing weak signals from distant sources.One of the most common uses of the parabolic antenna is in satellite communications. Satellites orbiting the Earth transmit signals that need to be received by ground stations. The parabolic antenna is perfect for this purpose because it can focus on the satellite's signals, which are often weak due to the vast distance they travel. By using a parabolic antenna, ground stations can maintain stable and reliable communication links with satellites, enabling services such as internet connectivity, television broadcasts, and global positioning systems (GPS).In addition to satellite communications, parabolic antennas are widely used in television broadcasting. Many households use satellite dishes, which are a form of parabolic antenna, to receive television signals from satellites. The design of these antennas allows them to capture signals from specific satellites, ensuring that viewers receive clear and uninterrupted broadcasts. This technology has revolutionized how we consume media, providing access to a wide array of channels and programming from around the world.Moreover, parabolic antennas play a significant role in radar systems. They are employed in various applications, including weather monitoring, air traffic control, and military operations. The ability of a parabolic antenna to focus energy into a narrow beam allows radar systems to detect objects at great distances with high precision. This capability is crucial for tracking aircraft, predicting weather patterns, and ensuring national security.Despite their advantages, parabolic antennas also have some limitations. One of the main challenges is their size; larger dishes can provide better performance, but they may not be practical for all users. Additionally, parabolic antennas require precise alignment to function effectively. Any misalignment can lead to a significant loss of signal quality, which can be frustrating for users who rely on these systems for communication.In conclusion, the parabolic antenna (抛物面天线) is a vital component of modern communication technologies. Its unique design allows it to capture and focus signals with remarkable efficiency, making it indispensable in satellite communications, television broadcasting, and radar systems. As technology continues to advance, the importance and applications of the parabolic antenna will only grow, further enhancing our ability to connect and communicate in an increasingly digital world.