H-plane sectoral horn antenna

體育中心／賴禹蓉

▲世界羽球聯盟（BWF）在官方Instagram接連貼出戴資穎、李洋以及王齊麟的照片。（圖／翻攝自BWF官方IG）

湯優盃世界羽球團體賽8日即將在泰國點燃戰火，台灣羽球好手們日前已經陸續抵達會場展開訓練，世界羽球聯盟（BWF）6日在官方Instagram發布限時動態，接連貼出了戴資穎、李洋以及王齊麟的照片，讓網友們又驚又喜！

台灣羽球一姐戴資穎4日抵達泰國後隔天開始展開訓練，6日小戴轉發了一則BWF官方發布的限時動態，文中捕捉到戴資穎在賽會現場的身影還搭配上泰國國旗，用中文字寫下「看看誰來了！」並標註戴資穎帳號，透過溫馨可愛的方式，熱烈歡迎選手們的到來。

The log-periodic antenna as known as LPDA is a wideband directional antenna that provides gain and directivity combined over a wide band of frequencies.
Both Log-Periodic Antennas and Yagi antennas are high gain directional antennas. The main difference between these antennas is that Log-Periodic Antennas support wider frequency bandwidths and are physically much larger than Yagi antennas.
The log-periodic dipole array typical VSWR is 2:1 and operates over a much wider bandwidth and will have a lower gain for an equivalent number of elements.
In terms of its specification, a typical log periodic antenna might provide between 3 and 6 dB gain over dipole for a bandwidth of 2:1 while retaining a VSWR level of better than 1.3:1. With this level of performance, it is ideal for many applications, although a log-periodic antenna will be much larger than a Yagi of an equivalent gain.

EMC/EMI pre-compliance test antenna.
Very high gain over the full frequency range.
 Meets latest EMC standards up to 7GHz.
Suitable even for immunity measurements

點進到BWF官方帳號後，還有彩蛋！官方接連捕捉到「黃金男雙」李洋和王齊麟的身影，李洋開心比出「耶」的手勢，王齊麟則是比出第一名NO.1的手勢，透過BWF在現場的紀錄，也讓網友們看到他們私底下可愛的一面，期待這次在泰國湯優盃，中華男團和女團都能再創佳績。