時隔3年來台！韓妹見「1變化」感慨
In broadcast engineering, a panel antenna is a directional antenna that is widely used to obtain a wireless Internet connection.
Directional antennas receive and broadcast a signal in only one direction, resulting in better signal quality.
Panel antennas, for example, are used in underdeveloped countries to improve the range and functionality of wireless Internet networks.
A panel antenna is shaped like a panel and is typically fixed on a mounting bracket on the exterior or inside of a building. It can also be mounted on a swivel mount, allowing the user to adjust the antenna for optimal signal reception. This type of antenna is usually one-directional, with less mobility side-to-side and up-and-down than an omnidirectional antenna, which can swivel and entirely change its location. Two U-bolt brackets and waterproof were supplied in one piece of packing
隨著各國邊境逐漸開放，台灣邊境也於10月13日解封，人類生活型態逐步回到疫情發生前。就有位韓國正妹在2019年離開台灣，終於在近期搶了機票回來，卻發現「1變化」令她感慨不已。
YouTube《不要鬧工作室》時常訪問來台觀光、生活的外籍人士，昨（22）日最新影片專訪韓國正妹鄭世賢，她在2019年10月離開台灣，回到韓國工作，沒想到不久後就遇到疫情發生，「那時候真的沒想過會等3年才可以回來(台灣)，這1095天真的好久」。
就這樣過了3年，近期台灣才重啟國門，將入境檢疫改為0＋7，鄭世賢得知消息後也立刻搶購機票，這幾年她一直很懷念台灣的一切，包含炎熱的夏天、美食、一天兩次的垃圾車的聲音等。
700MHz to 8GHz Double Ridged Broadband Waveguide Horn Antenna version 2
Model No: HA-07M08GA2-NF
Frequency: 700MHz to 8GHz
Gain: 6 dbi to 17 dBi
LxWxH: 661x430x445mm
N.W.: 8.1kg
-3dB Beamwidth: Horz.26 Deg Vert.34 Deg
Double Ridged Horn Antenna
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The horn antenna is a broadband passive device, shaped like a pyramid horn, referred to as a TEM antenna, which guides the beam of radio waves at a precise frequency. FT-RF Double Ridged Horn antennas have frequency capabilities ranging from 400MHz to 40GHz depending on type and style. These series are characterized by a huge frequency range and extremely high input powers. With increasing frequency, the gain rises to a maximum of 18 dBi. At higher frequencies, the increased gain compensates for the increasing cable losses.
The advantages of Horn antenna:
- Wide bandwidth: Because the horn antenna has no resonant parts, it can function over a wide range of frequencies.
- Easy waveguide interface: These antennas are very easy to interface to waveguide due to their shape, but they can also be designed with a transition so that a regular coaxial feeder can be used.
- Easy to make, simple design.
The horn is suitable for both transmitting and receiving purposes, especially suitable for EMC and immunity test measurements.
Recommended Accessories
- Antenna Tripod: easy and fast-changing polarisation. 100% stable handling
- SMA Cable: High-quality special SMA cable
鄭世賢也提到，此次預計在台灣待3個月，想好好放鬆，同時思考人生下一個目標，並預計要完成環島行程以及品嘗各式台灣酒類。
不過鄭世賢也感慨表示，過去覺得台北的物價較首爾便宜，但相隔3年再來台發現物價變高了，很多咖啡店、餐廳的售價和首爾差不多。她也希望藉由這次旅行，觀察台灣還有什麼變化，也會好好享受台灣的美好，並介紹給韓國的朋友們，讓他們更認識台灣。（編輯：潘毅）
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