Log Periodic Antenna

娛樂中心／王意馨報導

▲今（14）日是白曉燕逝世25周年，白冰冰清晨在臉書發文思念。（圖／翻攝自白冰冰臉書）

資深藝人白冰冰女兒白曉燕1997年遭陳進興等人綁架撕票離世，讓白冰冰傷心欲絕。今（14）日是白曉燕逝世25周年，每年都會在社群平台上發文思念女兒的白冰冰，清晨在臉書上寫道「燕兒啊～妳好不好？再也未曾入夢探訪…」一字一句讓人看了鼻酸。

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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

面對失去女兒的傷痛，白冰冰至今談及此事時仍會感到不捨落淚，今（14）日是白曉燕離世第25年，白冰冰清晨在臉書PO出昔日母女合照，兩人身穿母女裝對鏡頭笑得燦爛。文中她寫下這25年來的心情，直呼「望著小女的牌位，難免觸及心傷，冗長的歲月，卻是剎那短。皓月當空，無言問月娘，燕兒啊～妳好不好？再也未曾入夢探訪…」更祝福她早已喝過孟婆湯，幸福的生活在某一方。文字流露出滿滿思念。

貼文曝光後，引來許多網友替白冰冰加油打氣，紛紛向她喊話「都過去了、要放下好好照顧自己、平安健康過日子」、「錐心刺骨之痛，要加油」、「勇敢面對一切」、「燕兒一定會過得很好，也最希望媽媽要過得健康快樂幸福」。