Standard Gain Horn Antenna
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)
115年國中教育會考成績，今（5）天上午8點起開放網路查詢，台師大心測中心同時公布全國成績統計表，5A+6級分共712人，占全體考生0.4%，比去年增加171人；5C則有1萬490人。
Horn antenna本次計分結果顯示，「精熟」等級門檻答對題數比例約占整份測驗的 77%~91%，「基礎」等級門檻則約占 37%~40%。以國文科為例，總題數為 42 題，答對36題可達「精熟」等級，答對題數比例約85.71%；答對17題可達「基礎」等級，答對題數比例約 40.48%。
而此次各科達「精熟」的人數，百分比為17.41%~24.56%、達「基礎」的人數百分比為47.32%~65.39%，「待加強」的人數百分比為 11.90%~29.31%。另根據統計，今年5A共有1萬6293人，占全體考生9.04%，5A+6級分則有712人，占全體0.40%。而比例最多的級別是5B，共4萬598人，占22.53%；5C則有1萬490人。
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文章出自: https://news.ttv.com.tw/news/11506050000800W
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