▲111年國中教育會考僅19.9萬人報考，創下歷史新低。
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
（資料照）
111年國中教育會考將於5月21及5月22日辦理，根據全國試務會統計，總計19萬9318人報名，比110年減少逾3000人，也是首度跌破20萬人，創歷史新低。
教育部國民及學前教育署今（13）天新聞稿指出，111年國中會考已於3月12日完成報名，經全國試務會統計，全國18個考區及大陸考場報名人數總計19萬9318人（集體報名19萬8001人、個別報名1317人）。
其中，報名人數最多的3考區，分別為中投考區3萬805人、新北考區3萬764人、高雄考區2萬2028人。
全國試務會提醒，111年國中教育會考考試日期為5月21日及5月22日，4月15日寄發准考證，集體報名者，由就讀國中轉發准考證，個別報名者，由各考區試務會寄發准考證。
全國試務會指出，考生收到准考證後應詳細檢查，如有錯誤須在4月18、4月19日提出申請更正，集體報名考生向就讀國中提出勘誤需求，個別報名考生向考區試務會提出勘誤需求。
全國試務會表示，會考特殊身分考生包含原住民、派外人員子女、蒙藏考生、回國僑生、港澳考生、退伍軍人、境外優秀科技人才子女，總報名人數7716人；各類特殊身分考生於各項入學管道報名時，須再繳交相關證明文件，以供審核。
另外，身心障礙及重大傷病考生總報名人數8572人，全國試務會指出，報考資格已於報名時審查，但考生申請特殊應考服務，仍須經考區試務會邀集身心障礙相關領域學者專家、特殊教育專業人員及其他相關人員組成審查小組，審查後再通知考生審查結果。
