這款iPhone要大改版！「2大升級」搶先看

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

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

記者谷庭／台北報導

▲ 傳出第四代iPhone SE會有重大變革。（圖／資料照）

傳出蘋果將推出的第四代iPhone SE會有重大變革，尺寸不延續小款4.7吋，而是改為6.1吋，另外也不會有實體Home 按鍵，此舉可能會讓iPhone SE 消費族群重新洗牌。

知名分析師Ross Young最新爆料消息稱，取得供應鏈消息，蘋果目前考慮將第四代iPhone SE改為6.1吋OLED面板，或是螢幕尺寸介於5.7吋至6.1吋LCD面板，不過目前尚未定案，但兩款尺寸都比原先主打小尺寸的4.7吋升級不少，另外備受果粉喜歡的實體Home 按鍵也要取消，改為前螢幕瀏海凹槽。

外觀上也會類似iPhone XR，搭載機身邊框的Touch ID的電源按鍵，所以也就是即便有瀏海前螢幕，但仍不具備Face ID臉部解鎖功能，不過由於會購買iPhone SE的用戶主要就是喜歡小尺寸跟實體Home 鍵，若這兩大優勢都取消，勢必會衝擊到原先的購買族群，加上升級也會帶動成本提高，讓售價上漲，屆時iPhone SE 評價定位也許也會跟入門款iPhone變得模糊。

雖然目前蘋果都尚未證實是否有這些變革，但 iPhone SE 初代的設計是基於 2013 年的 iPhone5s，而iPhone SE2 與 3 設計是基於 2017 年 iPhone 8，也讓第四代iPhone SE有很高機率，依循iPhone XR做出改變。