banner

新聞中心

2025/04/30

如何挑選最適合的SMA同軸連接器?從頻率到環境,一次搞懂關鍵選擇要點

如何挑選最適合的SMA同軸連接器?從頻率到環境,一次搞懂關鍵選擇要點 

如何挑選最適合的SMA同軸連接器?從頻率到環境,一次搞懂關鍵選擇要點

 

為什麼選對SMA連接器這麼重要?

SMA(SubMiniature version A)同軸連接器,是高頻RF訊號傳輸應用中不可或缺的元件。無論是5G、Wi-Fi、雷達、衛星通訊,還是實驗室測試設備,選對SMA連接器,都能顯著影響整體系統的效能、穩定性與訊號損耗。

但該怎麼選?這篇文章將以工程師實用角度,幫你一一拆解頻率範圍、阻抗、材質、端接方式、耐用性等重要選擇關鍵。

 

 

1. 頻率範圍決定你的起點

標準SMA連接器支援 DC 至 18GHz,某些高階款可達 26.5GHz 甚至更高。根據應用場景不同,對頻率的要求也大不相同:

  • 5G / Wi-Fi 應用:2GHz ~ 6GHz
  • 雷達 / 衛星通訊:12GHz ~ 30GHz
  • 測試與量測設備:18GHz 以上

選擇連接器時,應確保其額定頻率大於實際需求,才能有效減少訊號損耗。

 

 

2. 阻抗匹配是穩定傳輸的基石

  • 50Ω SMA連接器:為大多數RF應用標準配置
  • 75Ω SMA連接器:常見於有線電視與視頻系統

若阻抗不符,容易產生回波損耗(Return Loss),導致訊號反射與系統不穩。

 

 

3. 材質決定連接器的訊號效率與耐用度

選擇材質需根據你的應用環境與訊號需求:

  • 鍍金銅合金:低接觸電阻、高導電性,損耗小
  • 不鏽鋼外殼:耐高溫、高強度,適合嚴苛環境
  • PTFE絕緣材料:具低介電常數,減少訊號衰減

 

 

4. 評估使用環境,決定耐候性與穩定性

  • 耐高溫:軍用或航太應用,需承受 -55°C 到 +200°C
  • 防水防塵等級(如 IP67):適合室外無線基地台或雷達設備
  • 抗震耐衝擊:車載、飛行器設備需防止振動鬆脫

 

 

5. 根據端接方式,選擇最適合的安裝形式

  • 焊接式(Solder Type):信號穩定性高,適合實驗室與測試設備
  • 壓接式(Crimp Type):安裝快速,便於現場施工與量產
  • 夾緊式(Clamp Type):耐震耐振,適合車載與軍規應用

 

 

6. 搭配合適的同軸電纜,才能發揮最大效能

  • RG-316:適合低頻、低損耗應用(5GHz以下)
  • RG-402:可支援高頻18GHz以上,常用於精密測試
  • 半剛性電纜(Semi-rigid):訊號傳輸穩定、精度高,應用於高頻與實驗室環境

 

 

7. 測試與品質驗證是關鍵步驟

選擇連接器時,別忘了確認以下測試項目,確保可靠性:

  • 插入損耗測試(Insertion Loss):評估訊號衰減
  • 回波損耗測試(Return Loss):驗證阻抗匹配與訊號反射情形
  • 耐久性測試:檢查是否能承受 500 至 1000 次插拔週期

 

 

選擇適合的SMA連接器,是提升系統效能的關鍵一步

從頻率需求到安裝環境,每一項選擇都將影響你系統的整體表現。建議依照實際應用場景,挑選符合技術規範的高品質SMA同軸連接器,不僅能穩定訊號,還能延長設備壽命。

若你正在為特定應用尋找可靠的SMA連接器,佳楠精密電子提供多種客製化連接解決方案,滿足嚴苛規格與軍工、醫療、航太等高端應用需求。

 

立即採取行動:

需要技術支持或更多資訊? 隨時聯絡我們的客服團隊:service@chinnan.com.tw

深入了解SMA連接器頻率範圍,了解如何選擇最佳產品:SMA同軸連接器頻率範圍基礎知識|支援5G、雷達、量測等應用

準備購買SMA連接器? 快速前往我們的購物網站:SMA同軸連接器購買頁面

 


前往LINE官方帳號

登入會員

評分

已送出
謝謝您的評分
OK

We will use cookies on our website for technical, analytical, and marketing purposes. By continuing to browse this website, you agree to our use of cookies. To learn more, read our Privacy Policy.  

同意

PRIVACY POLICY

LEGAL, TERMS & CONDITIONS

Chin Nan respects the privacy rights and interests of each customer. Chin Nan will observe the principles when processing your personal information fairly and lawfully. We take the protection of personal data very seriously. We want you to know when we are storing your data, what data we are storing and how we are using it.

PERSONAL INFORMATION YOU PROVIDE TO US THROUGH OUR SITE.

We may collect and store personal information that you choose to voluntarily provide to us when you provide it through the Site. The types of personal information may include:

  • Company name, contact name, job title, company website, country, business type, email,telephone number, fax number, address.

  • Other personal information you may include in content you submit on the Site.

COOKIE:

There is a technology called "cookie" which is an element of data that a website can send to your browser which may then store on your system. Some Site pages use cookies so that we can better serve you when you return to our Site. You can set your browser to notify you when you receive a cookie, giving the chance to decide whether to accept it.

We use Track ID (cookies) to collect and store information when you visit our website; the information is saved at Amazon Web Services (AWS) and used to identify your browser or device.

Cookies do not harm your computer and do not contain any viruses.

Cookies help make our website more user-friendly, efficient, and secure.

Cookies are small text files that are stored on your computer and saved by your browser. Using cookies enables us to provide you with certain features and provides us with information regarding website visits.

WEB ANALYSIS WITH GOOGLE ANALYTICS

We use Google Analytics to analyze user activity in order to improve the Website. For example, using Google Analytics Cookies we can look at aggregate patterns like the average number of searches that users perform, what keywords users searched, countries and languages. We can use such analysis to gain insights about how to improve the functionality and experience of the website. You can visit Google Analytics’ Privacy Policy at: https://policies.google.com/technologies/cookies

YOUR INFORMATION COLLECTED FROM OTHER TECHNOLOGIES

Besides Cookies, we use other technologies to improve your user experience and the overall quality of our services by collecting the information below:

[site visitor] visited website (URL)

[site visitor] IP Address

[site visitor] Internet Connection Device Brand, Model and OS

[site visitor] Internet Connection Device Browser, Resolution, Color

[site visitor] GeoIP

[site visitor] ISP

INFORMATION, BLOCKING, DELETION

As permitted by law, you have the right to be provided at any time with information free of charge about any of your personal data that is stored as well as its origin, the recipient and the purpose for which it has been processed. You also have the right to have this data corrected, blocked or deleted. You can contact us at any time using the address given in our legal notice if you have further questions on the topic of personal data.

All the collected information is saved for 24 months on Amazon Web Services (AWS) and regularly deleted every month..

THE PROTECTION OF YOUR PERSONAL DATA

Your personal data is stored on Amazon Web Services (AWS). AWS Announces CISPE Membership and Compliance with First-Ever Code of Conduct for Data Protection in the Cloud.

INFORMATION SECURITY

We use standard security technology SSL or HTTPS standard technology for keeping an internet connection secure and safeguarding any sensitive data that is being sent between two systems, preventing criminals from reading and modifying any information transferred, including potential personal details.

CHANGES TO THIS PRIVACY POLICY

We may update this Privacy Policy to reflect changes to our information practices. If we make any material changes we will notify you by email (sent to the e-mail address specified in your account) or by means of a notice on this website prior to the change becoming effective.