Standard Gain Horn Antenna

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Standard gain horn antennas are used as calibration devices that measure the gain of other antennas.

These antennas are made up of a combination of a Waveguide to Coax Adapter and Standard Gain Horn with Waveguide Input. It is a kind of simple combination but with great care and attention to create an antenna with accurate and suitable specs.

FT-RF Standard gain horn antenna product series includes waveguide sizes WR28, WR42, WR51, WR62, WR75, WR90, WR112, WR137, WR159, WR187, WR229, WR284 and WR340, WR430, WR510, WR650, WR770, WR975, WR1150, WR1500, WR1800, WR2100, WR2300, with broadband waveguide horn antennas have frequency capabilities ranging from 320Mhz to 40 GHz depending on type and style. with the gain of 10dBi, 15dBi, 20dBi and 25dBi.

Standard Gain Horn Antenna Applications:

- Antenna measurement
- Radar Detection System
- Wireless Communication
- Spectrum Monitoring
- Electromagnetic interference Testing (EMI test)

每到冬天，天氣一轉冷，許多人第一時間就會把發熱衣拿出來穿，但不少人也發現，明明穿了發熱衣，身體卻還是覺得冷。其實，發熱衣不夠保暖，原因不一定出在氣溫，有時反而和衣服本身有關。對此，Uniqlo Taiwan指出，發熱衣其實是有使用年限的機能衣物。隨著穿著時間拉長與清洗次數增加，衣料的機能會逐漸下降，保暖效果也會跟著打折。當發熱衣無法有效留住體溫，即使層層穿搭，仍可能覺得不夠暖。

對此，Uniqlo Taiwan也分享快速檢查2個重點，就能判斷手上的發熱衣是否已經影響保暖表現，該不該考慮汰換。

1、先看衣標上的數字

發熱衣的保暖效果，來自纖維吸收水氣後產生熱能。但隨著穿著、清洗次數增加，纖維結構會逐漸老化，吸濕發熱能力也會下降。

一般建議，穿滿約 3 年就可以考慮汰換。換上新的發熱衣，貼身度與保暖感受，真的會差很多。