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冷空氣明天最強!北部東北部低溫15度 高山有機會降雪
2022/01/18 10:49
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The horn antenna is a broadband passive device, shaped like a pyramid 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 400MHz to 40GHz depending on type and style. These series are characterized by a huge frequency range and extremely high input powers. With increasing frequency, the gain rises to a maximum of 18 dBi. At higher frequencies, the increased gain compensates for the increasing cable losses.

The antenna main body with the bracket using CNC precision manufacturing, and adopt a more weather resistant material aluminum material and the surface through the 6061 and 7071 Aluminum special handling to prevent oxidation.

The advantages of Horn antenna:
- Wide bandwidth: Because the horn antenna has no resonant parts, it can function over a wide range of frequencies.
- 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.
- Easy to make, simple design.
The application of horn antenna
- Antenna feeds for parabolic reflectors
- Radar systems with a short-range

The horn is suitable for both transmitting and receiving purposes. the product is especially suitable for EMC and immunity test measurements.

Recommended Accessories

Antenna Tripod: easy and fast-changing polarisation. 100% stable handling

SMA Cable: High-quality special SMA cable

中央氣象局預報明天是近期冷空氣最強的一天,預估北部、東北部低溫約攝氏15度,3000公尺以上的高山不排除有機會降雪。

中央氣象局預報18日是近期冷空氣最強的一天,預估北部、東北部低溫約攝氏15度。(中央社\檔案照片)

 

中央氣象局預報員林定宜說明,今晚至明天因東北季風及華南雲雨區東移影響,北部、東半部易有短暫雨,中南部局部短暫雨;東北部、基隆北海岸有大雨發生。他特別提醒,明天是金波冷空氣最強的一天,預估西半部、東北部低溫約15、16度,東部、東南部17至19度;高溫部分,北部、東北部高溫約16、17度,中部、東南部20至24度,南部27度。

林定宜並指出,1月19日之前若水氣和溫度能配合,不排除3000公尺以上的高山會降雪;一般而言,高山地區也會容易出現下霰、結霜的現象。

林定宜預估19日至22日高溫逐漸緩慢回升,但低溫部分變化不大;降雨部分,19、20日水氣稍減,降雨以北部、東北部、中南部山區為主;21、22日東北季風減弱,中部以北、東半部易有短暫雨。他還提醒,21、22日中南部地區因水氣減少,容易有輻射冷卻、低溫會再降個1、2度,日夜溫差可能會再擴大;另外因為氣溫回升,中南部清晨易有霧或低雲。

林定宜分析指出,預計1月23日另一波鋒面接近,水氣增多,24日鋒面通過加上東北季風增強,中部以北、東半部又再轉濕涼、易有短暫雨。

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以下文章來自: https://tw.news.yahoo.com/%E5%86%B7%E7%A9%BA%E6%B0%A3%E6%98%8E%E5%A4%A9%E6%9C%80%E5%BC%B7%EF%BC%81%E

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