Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)"
]
}
}
臺南綠衣天使眼尖助人 即時扶起摔倒老翁 蕃新聞
Log Periodic Antenna (LPDA)
Log Periodic Antenna (LPDA)
本文引用自: https://n.yam.com/Article/20240228341330
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.
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.
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臺南綠衣天使眼尖助人 即時扶起摔倒老翁
勁報/
2024.02.28 02:26
【勁報記者于郁金/臺南報導】臺南白河郵局郵務士陳韋志今年2月15日騎車到後壁無米樂社區後廍里送信時,瞥見一名老翁在家門前倒地不起,他立即停下郵車,趕緊幫忙扶起,關懷傷勢,家屬事後獲悉,近日特申謝忱。
老翁的女兒黃小姐事後得知,不僅致電郵政客服中心讚揚陳員熱心協助外,老翁的妻子還特別準備豬腳麵線親自送到白河郵局給陳員,並雙手握著他,感謝之情溢於言表,溫馨畫面成為白河郵局最美麗風景。
黃小姐表示,父親年事已高,當時摔倒躺在地,無法起身,家裡只剩老弱阿嬤與幼孩,如果不是郵務士路見即時幫忙扶起,真不知如何是好;對於郵務士援手扶助後,當日中午投遞中還特別返回她家再探望、持續關心他父親狀況,家人備感窩心。
臺南郵局長李英傑表示,郵務士深入鄉里,透過送信過程中關心長者與弱勢,個個「綠衣天使」穿梭在鄉間小道,照顧、關懷著「咱的鄉親」;郵政對此善行,將予以嘉勉表揚,讓郵愛的種子持續散播到社會每一個角落,繼續溫暖著你我。(臺南郵局提供照片)
本文引用自: https://n.yam.com/Article/20240228341330
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.
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.