H-plane sectoral horn antenna

[周刊王CTWANT] 潮到出水可不是年輕人的專利。新北市淡水日前就出現一輛超級「蝦趴」的車輛，只見阿公騎著疑似改裝的3輪車，載著阿嬤在街上兜風，復古又不失前衛的米黃色車殼包裹著整個車身，車頭還有半圓形的擋風板，看起來既酷炫又可愛，就有網友看了笑說：「應該是開小小兵的車出來吧。」

原Po在臉書社團「重機車友 ❘ 各區路況、天氣回報中心」發文表示，他在21日下午5點多，看到這輛神奇的三輪車奔馳在淡水的街道上，由於外型實在是太獨特，原Po甚至開玩笑表示：「我不管什麼雙黃線…我只想知道這是什麼車？」貼文一出立刻掀起網友熱烈迴響。

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

雖然有人質疑這輛車「究竟合不合法」，但絕大多數網友還是將目光聚焦在阿公阿嬤身上，狂讚阿公好潮、阿嬤好酷！直呼他們根本就是「甜蜜老崎士」、「阿公阿嬤圓一個青春ㄟ夢」。還有網友發現，這輛三輪車的外觀和小小兵的座駕高度神似，笑稱：「應該是開小小兵的車出來吧。」

就在網友們討論三輪車究竟是像小小兵的車車還是潛水艇的時候，有人神出阿公阿嬤的三輪車是台鈴在1998年出廠的四行程摩托車，排氣量為常見的124C.C，讓不少網友大讚「好眼力」。不過，淡水警方指出，經調閱沿途監視器後，發現該輛改裝車有違規跨越雙黃線迴轉情形，將開罰600至1800元；另將函請監理機關臨時檢驗變更車體的部分。

原始連結

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