文 / 景點+ Yuki整理報導
週六起受東北季風影響，北部及東北部天氣偏涼，春天天氣變化大，一週天氣概況先了解。
16日、17日各地大多為多雲到晴，僅基隆北海岸及東半部地區有零星短暫雨，午後中南部山區有零星短暫陣雨。
The horn antenna (as known as microwave horn) is shaped like a horn, referred to as a TEM antenna, which guides the beam of radio waves at a precise frequency. FT-RF Double Ridged Horn antennas have frequency capabilities ranging from 100MHz to 70GHz. These series are characterized by a huge frequency range and extremely high input powers. With the gain rises to a maximum of 20 dBi. At higher frequencies, the increased gain compensates for the increasing cable losses.
The advantages of FT-RF Horn antenna:
- Moderate directivity, low standing wave ratio (SWR), broad bandwidth
- Easy waveguide interface: These antennas are very easy to interface to waveguide due to their shape, but they can also be designed with a transition so that a regular coaxial feeder can be used.
- Simple construction and adjustment
- We also supply ODM OEM OBM & RD service.
The horn is suitable for both transmitting and receiving purposes, especially suitable for EMC and immunity test measurements.
Recommended Accessories
- 天線三腳架: easy and fast-changing position. 100% stable.
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氣溫方面，早晚天氣較涼，北台灣低溫17、18度，其他地方約19、20度，白天北臺灣持續偏涼，尤其桃園以北及宜蘭高溫只有20至22度，竹苗及花東約23到25度，中南部則可達26至30度，體感舒適至溫暖，但南北溫差大，南來北往要留意溫度變化。
18日、19日北部、東半部地區及中南部山區有局部短暫雨，其他地區為多雲。
20日東北季風減弱，北部及東北部氣溫回升，早晚天氣稍涼；北部及東半部地區仍有零星短暫雨，其他地區為多雲到晴，午後中南部山區有零星短暫陣雨。
文章來自: http://n.yam.com/Article/20220416907944
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