Log Periodic Antenna

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▲大貓熊「團團」癲癇再發作，園方下午將開記者會說明。（圖／臺北市立動物園 提供）

臺北市立動物園今(19)日發新聞稿指出，大貓熊「團團」在今日凌晨凌晨1點5分、1點56分及3點54分癲癇再度發作，醫療照管團隊施打抗癲癇藥物，但「團團」症狀仍持續間歇性地發作，因此團隊共同決定讓「團團」在麻醉中沉睡、不要再繼續痛苦了，臺北市立動物園將在今日下午3點說明相關細節。

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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

臺北市立動物園指出，「團團」癲癇發作的密度和頻率明顯增加，，醫療照管團隊發現短效型的抗癲癇藥物已無法有效抑制癲癇發作，「團團」的生理和精神狀況都每況愈下；「團團」今日凌晨1點5分、1點56分及3點54分癲癇再度發作，早上好不容易甦醒後，一直趴著休息，顯示身體非常虛弱，更完全無法進食。

醫療照管團隊根據CT及生理指數，研判「團團」的病況已不可逆，即便想辦法讓牠從深度麻醉中甦醒，「團團」也難再有品質地自主生活，因此醫療照管團隊在百般不捨的痛苦中，共同決定讓「團團」在麻醉中沉睡、不要再繼續痛苦了。

臺北市立動物園將在今日下午3點至4點開記者會說明，表示新聞稿一出收到許多媒體電話詢問「因為所有電話集中在同一時間播打，無法一一接聽」，園方明白外界相當關心和心急，相關細節將在記者會上統一說明。