H-plane sectoral horn antenna

體育中心／賴禹蓉報導

▲林書豪擔任美好+1傳播官。（圖／翻攝自林書豪微博）

北京首鋼在CBA季後賽首輪就爆冷出局，面對吉林東北虎2連敗慘遭淘汰無緣8強，連2場決勝時刻都被教練團換下場冷凍的美裔台籍球星林書豪已低調返回北京，沉默多日後終於首度在個人微博發聲了。

北京首鋼在例行賽對吉林東北虎取得4連勝，外界看好首鋼能挺進8強，不過首戰飆出23分的林書豪，卻在決勝時候被換下場，第2戰表現不盡理想，只拿下11分，首鋼爆冷出局後引發北京球迷不滿，罵聲四起，林書豪也成為網友砲轟的對象，不過仍有許多支持者在網上替他加油。

沉默多日後林書豪終於在微博發聲，延續自己「三分心」公益活動，秀出一段教小朋友用手指轉動籃球的教學影片，希望能透過寶藏課程的錄製讓兒童能接觸到更多有趣的事物，以及得到陪伴，同時也搭配貼文寫道，「我是美好+1傳播官林書豪，今年我的三分心捐款是13.5萬元，但籌款仍在繼續。請大家與我共同關注城市流動兒童成長，為『寶藏小屋』的孩子們錄制寶藏課堂，並貢獻愛心。」

寶藏課程的推動也受到廣大的回響，JJ林俊傑就錄製影片教導小朋友「如何畫自畫像」，而吳建豪則是上傳了一段「Juggling雜技教學」，林書豪看到後也隔空向好友們致意，「謝謝好兄弟林俊傑的寶藏課堂。太cool了！謝謝JJ教我們怎麼畫自畫像，支持三分心和流動兒童。你太有愛心了！」，而對於吳建豪的教學，他也搞笑回應「這個太好笑了，你教會了我很多東西，比如用我的平台去幫助別人。但是我不確定我是否要和你學這個雜耍哈哈！一起來為城市流動兒童貢獻愛心吧。」

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