HORN ANTENNA CALIBRATION
1.) The dual-polarization (HQ-Series or HR-Series) antenna has an electronic switch that may simultaneously test horizontal and vertical or +-45deg polarization, as well as a couple that can test circular polarization.
2.) The dual-polarized antenna (HQ-Series or HR-Series) is mounted on the chamber's bracket or wall (this is the way to test the antenna)
3.) If the dual-polarized antenna is being used for something else and calibration is needed, we can certainly assist.
4.)Single-polarized antennas (HA-Series, HB-Series, and other antennas) are commonly used to replace the antenna method's calibration antenna. When HA calibration is utilized, the calibration site is lost (patch loss uses a network analyzer) Enter the antenna's gain (minus the gain of the antenna, equal to the address of the object under test, return to zero)
5.) There is only one technique to compute antenna gain. The path loss patch loss subtracts the antenna's gain and substitutes the antenna under test to obtain the antenna's gain.
6.) Rotate the object under test after calculating the antenna route loss and gain calibration numbers (requires a rotating table, 2D test)
7.) If you want to read the horizontal and vertical antenna patterns at the same time with a dual-polarized antenna, an RF electronic switch, and a 3D rotating table, you can get the antenna pattern of the antenna (3D testing requires the use of HA-Series calibration twice, Horizontal and vertical or +-45deg),
8.) Antennas can be tested in a variety of methods (if you have any questions, you can provide simple photos or hand-drawn pictures, and we can assist you in the test plan)
9.) To ensure that the test value of the antenna is in compliance with international standards, all Horn products developed by FT-RF have passed internal calibration and testing in collaboration with external national research institutions, as well as third-party confirmation tests.
10.)In most ISO systems, we will demand external calibration of our test items every three years and internal self-calibration every other year. You can use the network with a set of HA-Series antennas. Calculate the path's loss using an analyzer (but usually at least three antennas can be used for internal correction, we can do internal correction by replacing the three antennas in turn)
11.)The antenna can be shipped back to Taiwan for calibration once every three years (you must know the shipping cost and the economic impact), or you can purchase a fresh set of calibrated antennas (we will calibrate the antenna internally).
11.)The antenna can be sent back to Taiwan for calibration once every three years (you must know the cost of shipping and the economic impact), or you can purchase a new set of calibrated antennas (we will calibrate the antenna internally or It is externally corrected and then sent to the customer)
12.) Antenna calibration is mostly done by an external calibration unit that must bear the ISO17025 and TAF logos.
13.)For the difference comparison test, you can use internally calibrated antennas, self-calibration, and ISO17025 antennas; this approach is frequently used in the ISO9001 series.
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
水利局說明：市府目前轄管60站抽水站220部抽水機組，各機組設備平日皆委由專業廠商進行例行性維護保養及辦理一年一度歲修大保養作業，除能夠延長機組壽命及節省長期汰舊更新成本外，亦能於面對颱風豪雨所帶來的各種考驗中，在最短時間內按標準作業程序及需求操作，以最佳的應變能力通過各項考驗，其中部分抽水站建站之初礙於經費需求，先運用臺北市及新北市汰舊抽水機組整修再利用，機組機齡約20~30年，加上早期抽水站使用至今亦超過15年以上，許多機組多已停產無法取得零件維修增加防汛風險，因此，為確保抽水機組妥善性及抽水穩定性並降低發生異常風險，縣市合併以來已汰換30部，今年汛期前將再完成8部，總計汰換38部老舊抽水機。
水利局表示：自黃偉哲市長上任以來，針對已無修繕效益的機組設備逐年進行汰舊換新，已投入超過4.5億元更新19部老舊機組(抽水量94.3CMS)，今年已有永康區永康分洪抽水站於2月完成1、2號機組更新，其餘仁德區田厝抽水站、安平區安平抽水站及學甲區下溪洲抽水站，計8部21CMS抽水量更新工作進行中，機組拆裝皆考量防汛需求排定於非汛期期間施作，避免出現防汛空窗，並都將於汛期前完成更新發揮防洪效益，以保障居民之生命財產安全。
水利局最後表示：面對極端氣候，多一分準備就多一分保障，市府將定期檢討既有設備抽水效能，有計畫性主動更新機組達到抽排效率最佳化，目前超過15年以上機組尚有約38部，後續將持續爭取經費逐年汰換，讓臺南成為一個宜居城市。
