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
哈爾濱的冰雪大世界有各式冰雕，不過因為疫情，參觀人數不如以往；示意圖。（東方IC）
一年一度的哈爾濱冰雪節在1月5日開幕，作為哈爾濱每年的重心旅遊項目，今年園方為了配合北京冬奧來臨，更推出以奧運為主題的冰雕，但受到新冠疫情影響，活動規模不得不減少，而中國民眾也興趣缺缺，參觀人數不如以往。
俄羅斯的克里姆林宮、墨西哥的太陽金字塔，全都化成一座座的冰雕，冰雕上顯示零下20度，哈爾濱的冰雪大世界有各式冰雕，因為冬天的哈爾濱可讓這些冰雕維持至少2個月，也讓這座冰雕主題公園成為哈爾濱的熱門景點。
園方有7大主題區，除了賞冰雕，更有不同的遊樂設施，今年為了宣傳冬奧，園方特別打造出冰雪奧運聖火的雪雕塔，還有奧運五環形狀建造的立體迷宮等，讓今年的冰雕展充滿奧運風，冰雕展一直是哈爾濱重點旅遊項目，相關旅遊收益更高達新台幣867億元。
冰雪大世界行銷部副總監孫澤民表示：「我們認為哈爾濱冰雪大世界放在今天經歷了23年，已經是成為我們哈爾濱冬季旅遊的『名片』。」璀燦煙火在上空施放，園方砸重金卻碰上新冠疫情重臨，冰雕展已經連續兩年，因為疫情減少活動規模。
加上當局實施預約制，沒預先登記的訪客也無法參觀，白天冷冷清清，就連冰淇淋車也沒開，就算到了晚上，燈都亮了起來，民眾跳舞狂歡，但人潮明顯不如以往。北京旅客劉先生表示：「也可能疫情結果吧，但這幾年相當不容易，今年的（人潮）比我上2次來（還少），可能是時間不對吧。」
園方拒絕透露參觀人數，但只要疫情仍在，哈爾濱的冰雕再美，也難以回復往日吸引百萬遊客的光景。
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