Golden Navigation: Introduction to SMA RF connector related content

   Shenzhen Jinhangbiao Electronics Co., Ltd.(SHENZHENKING HELMELECTRON CO., LTD.) was established in 2007. It is a national high-tech and dual-software certified enterprise, a senior member of the "China Satellite Navigation Association", an enterprise that has obtained the ISO9001 (04617Q13625ROS) quality management certification system, and is improving the IATF16949 automotive quality management system. The main business is the R&D, production and sales of Beidou satellite navigation and Internet of Things terminal application hardware, and the provision of www.BDS666.com logistics information intelligent system solutions.

So, next, the editor of Jinhangbiao will talk to you:SMA RF connectorRelated content introduction

SMA connector is a widely used high-precision ultra-small RF and microwave connector, especially suitable for!

Connect RF cables or microstrip lines in RF loops of microwave equipment and digital communication systems.

SMA connectors come in many forms, male, female, straight, right angle, bulkhead fittings and more, making them able to meet most requirements. Its ultra-small size also enables its use even in relatively small electronic devices.

Although well established now, the use of SMA connectors is likely to expand as many new RF systems see their operating frequencies extend well into the microwave region.

The SMA connector is an ultra-small coaxial cable connector, and its name comes from the Sub-MiniatureA connector. It finds many applications for providing connections for RF components within equipment that require coaxial connections. It is commonly used to provide RF connections between circuit boards. Many microwave components including filters, attenuators, mixers and oscillators use SMA connectors.

The impedance of the SMA connector is constant, with an impedance of 50 ohms. SMA connectors were originally designed and specified for operation up to 18GHz, although some versions have a top frequency of 12.4GHz and some are specified at 24 or 26.5GHz. Higher upper frequency limits may require operation with higher return losses. The actual specifications of a given connector depend greatly on the manufacturer and type - several different quality/performance grades are available. It's best to double check the connector specifications. Typically, SMA connectors have a higher reflection coefficient than other connectors up to 24GHz. This is due to the difficulty of securing the dielectric supports accurately, but despite this difficulty, some manufacturers have managed to overcome this problem appropriately and are able to specify their connectors for 26.5GHz operation.

With flexible cables, the frequency limit is usually determined by the cable rather than the connector. This is because the cables accepted by SMA connectors are small, and their losses are naturally much greater than those of the connector, especially at the frequencies they are likely to be used at.

In some cases, the power rating of an SMA connector may be important. The key parameter that determines the average power handling capabilities of a mated coaxial connector is its ability to deliver high currents and maintain thermal rise to moderate temperatures. The heating effect is primarily caused by contact resistance, which is a function of the contact surface area and the way the contact pads come together. One critical area is the center contacts - these must be formed correctly and fit together well. It should also be noted that flat

The average power rating decreases with frequency because resistive losses increase with frequency.

The above is the relevant content introduction brought to you by the editor of Laijin Navigation. I hope it will be helpful to you. Thank you for reading!