3.5mm Precision Adapter ,DC-33GHz, Low Standing Wave, Low Insertion Loss, Customized Production

PublishTime： 2025-01-27 Article Source：Juncoax official website

1 Introduction

As a key component in the field of RF and microwave communication, the 3.5mm series adapter's development history and diverse adapter forms are of great significance in meeting the needs of modern communication equipment.

The 3.5mm series adapter is a key component used to connect RF and microwave coaxial cables, characterized by small size, light weight, wide frequency range, and excellent electrical performance. With the rapid development of modern communication technology, this series of adapters has been widely used in fields such as radar, satellite communication, mobile communication, and testing instruments, as well as various forms of adapters derived from different needs.

2 3.5mm Series Precision Adapter

The origin of the 3.5mm series adapter can be traced back to the mid-1970s, when it was jointly launched by Hewlett Packard and Amphenol in the United States. This is one of the earliest RF coaxial connectors available in the millimeter wave band, designed to achieve high reliability physical interfaces with conventional SMA sizes for thousands of repeated connections and up to 33GHz.

With the development of technology, this series of adapters has gradually become an important component in the fields of RF and microwave communication. The inner diameter of its outer conductor is 3.5mm, the characteristic impedance is 50 Ω, and the interface is 1/4-36UNS-2 imperial thread, which makes it perform well in high-frequency transmission.

The 3.5mm adapter uses air medium, and the outer conductor of the connector is thicker than that of the SMA connector, resulting in better mechanical strength than the SMA connector. At the same time, its electrical performance is superior to SMA connectors, and its mechanical durability and repeatability of performance are higher than SMA connections. These features have made coaxial 3.5mm adapters widely used in the testing industry.

In order to meet the needs of different application scenarios, we provide various interconversion forms of 3.5mm series adapters, including but not limited to the following models:

In addition to the common adapter forms mentioned above, the 3.5mm series adapter can also be connected to other types of interfaces, such as SMP, BNC, TNC, MCX, MMCX, SMB, etc. These adapters not only meet the different needs of users, but also further expand the application range of coaxial 3.5mm adapters.

3 Application Cases

Radar system: In radar systems, 3.5mm adapters are widely used for connecting components such as antennas, transmitters, and receivers. Its high-frequency performance and stability ensure that the radar system can accurately receive and transmit signals, thereby achieving precise positioning and tracking of targets.

Satellite communication system: Satellite communication systems require the transmission of large amounts of data and information, and have extremely high requirements for the performance and stability of connectors. The 3.5mm adapter plays a crucial role in connecting components such as antennas and transceivers in satellite communication systems due to its excellent electrical performance and mechanical stability.

Mobile communication base station: Mobile communication base stations are an important component of wireless communication networks and need to support multiple frequency bands and signal formats. The 3.5mm adapter is used in mobile communication base stations to connect antennas and transceivers of different frequency bands, ensuring that the base station can operate normally and provide high-quality communication services to users.

Testing instruments: In the field of RF and microwave testing, 3.5mm adapters are widely used for connecting testing instruments and devices under test. Its high-frequency performance and stability ensure the accuracy and reliability of test results, providing strong support for the debugging and optimization of RF and microwave circuits.

4 Test report

N-3.5-KK-J-3

02.02.ZJ06350

3.5-KK-J-4

02.02.ZJ05500

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