Tag: Ultra-Fine Coaxial Cable

Assembly performance of ultra-fine coaxial cable

The ultra-fine coaxial cable assembly offers stable mechanical structure and supports high-speed signal transmission. With the high flexibility and shielding properties of the ultra-fine coaxial cable assembly, it is highly suitable for electronic products requiring high-capacity data transmission.

Structure of coaxial cable:

Coaxial cable is a multi-layered structure, consisting of a center conductor, insulation layer, outer conductor, and outer covering, known as the ‘coaxial cable’.

Ultra-fine coaxial cable

In coaxial cables, the cables used for high-performance small devices such as laptops, foldable smartphones, and medical equipment are extremely small. Generally, coaxial cables with an outer diameter ≤1mm are referred to as “ultra-fine coaxial cables”

High Flexibility

Ultra-fine coaxial cables are commonly used due to their higher flexibility compared to shielded FPC/FFC. They can maintain stable electrical characteristics even when bent

Excellent Impedance Control

When a high-speed signal is transmitted through a cable, the electrical signal can reflect at impedance discontinuities. Therefore, it is necessary to maintain a constant impedance as much as possible to suppress interference and ensure signal quality. By adjusting the distance between the center conductor and the outer conductor or the insulating material, the impedance of the ultra-fine coaxial cable can be appropriately controlled

Outstanding Shielding Capability

The outer conductor of the ultra-fine coaxial cable serves as electromagnetic shielding, providing excellent resistance to electromagnetic interference (EMI) by preventing the leakage of electromagnetic noise from the signal transmitted through the center conductor. Additionally, it exhibits good immunity to electromagnetic susceptibility (EMS) by effectively protecting against external electromagnetic noise

Ultra-fine Coaxial Cable Assembly Process

By terminating the ultra-fine coaxial cable with connectors, it is possible to create small and flexible assemblies of ultra-fine coaxial cables with excellent electrical characteristics

High-Performance Electromagnetic Compatibility Shielding

By using I-PEX’s EMC shielded connectors (ZenShield®), ultra-fine coaxial cable assemblies can provide significant electromagnetic interference mitigation. Therefore, ultra-fine coaxial cable assemblies with ZenShield® connector series are commonly used in high-performance electronic devices equipped with wireless communication capabilities, which require addressing EMC issues within the system.

Product Assembly Process with High Flexibility Advantage

The flexible cable characteristics of the ultra-fine coaxial cable assembly allow it to be used in various application scenarios, such as situations where the cable needs to pass through rotating components or in narrow and complex structures that make wiring challenging during assembly

Suitable Application Examples

The benefits and advantages of ultra-fine coaxial cable assemblies lie in their capabilities for mechanical and signal transmission. These components can handle high data rates while providing a high degree of flexibility and shielding performance.

Below are application examples that demonstrate the flexibility of ultra-fine coaxial cable assemblies

Product Sales Overview on the JunctionX Platform:

JunctionX specializes in the professional production, distribution, and sales of connectors/authentic substitute connectors, wire harnesses, cable products, and customized injection-molded parts, stamping parts. If you want to purchase or learn more about product solutions, please feel free to contact us through the following methods.

Enterprise -level low -speed cable component

While the data transmission rate is increased, the cable components required by the server are also increasing. Because the printed circuit board has not kept the transmission rate, high -speed cables play a main role. However, the importance of low -speed cable components has not changed. Low -speed components are still often used for power distribution, low -speed signal transmission and auxiliary lines. Low -speed components are rarely defined by industry standards, while high -speed signals are defined by the Standard Committee very frequently. As the density of the server rises, power consumption and heat are also increasing. Therefore, regardless of whether there are standards, all cable components need to be minimized, so that the server system is easy to install and prevent the flow of air flow between the components of the server so as to facilitate heat dissipation.

The advantage of low -speed cables and close -range high -speed cables is that small wire diameters can be used (except, except for power supply). High -density connectors and flexible circuit boards need to use small diameter cables. The smaller the use of the conductor, the more helpful the interconnection density, saving the space required for wiring and cable component connection.

Cable components with small bending radius and easy to wiring

It is essential for high -speed and low -speed internal cables. If the cable can be wiring along the edges or between memory and case, space can be effectively used. Less bending radius can not only reduce the space occupied by the cable, but also effectively use the edge corner of the case.

If the flexibility is insufficient, the component may require a large bending radius to occupy more space. Sometimes the cables need to be wiring along two directions. For example, up and left, the flat cables need to be curved several times, so it is difficult to achieve the steering of the two directions, and the wire beam can easily turn through through the twisting. True connectors are compatible with flexible flexible circuit boards, discrete wires and high -speed impedance control cables. USB or Ethernet is sometimes used as the access interface. They can be wired with low -speed cables.

Cabline® series connector can use various wires

On the front panel of the server with a low -speed cable component, there will be indicator lights, small display screens, and input/output interfaces such as USB and other input/output interfaces. The cable components used in the low -resolution front panel display contain multiple electronic wires, and there may be several pairs of high -speed cables. The LCD display of the small front panel can be set at any position in front of the case, and sometimes it is also set in the hanging ear. These positions are close to the pillar of the cabinet. Because the server is installed here, there will be many sheet metals here. The space that the cable can occupy is limited, and the narrow distance cable component helps to use limited space.

Low -back, miniaturized application

Extreme coaxial components and electronic wire components can be used for extremely low height design. Whether it is a high -speed or low speed, these components have low cup options to save precious space inside the server. It is often used to focus on saving space and lightweight drones, VR devices, and laptops. I-PEX extremely fine coaxial connector and electronic wire connector

I-PEX offers a variety of narrow-spacing output/input connectors. The I-PEX Cabline® series provides a variety of central lines and chimeric directions. The end -connecting electronic wires, shielding wires, impedance control extremely fine coaxials and dual -core coaxials, and even flexible circuit boards (FPCs). If high -speed is required, high -speed and impedance control cables should be selected. Low -speed cable components can use low -cost cables. Although the Cabline connector can be used for high -speed signal transmission, the link performance of the terminal depends on the cable.

Taking the Cabline®-VS polarity coaxial connector as an example, the spacing is 0.5mm, and 10 to 50 PIN feet can be selected. Due to the right -angle mother seat and straight public seat installed with circuit boards, the interface is parallel to the circuit board after installation. The connected options include electronic wires, shielding cables, extremely fine coales, and dual -core coaxials. More compatible with the FPC version. All wiring options of Cabline®-VSF shared a circuit board to install the mother seat. The FPC is an independent option, and the component only uses FPC. Different wires can be mixed with the same component. Electronic cable components contain some high -speed cables very common. If you need to use high -speed cables, the extremely fine coaxial axis can be used for transmission of differential signals. It also provides a shielding option to provide a 360 -degree shield for the connector to help suppress EMI.

Cabline®-CA IIF is suitable for FPC components, and can be compatible with the standard Cabline® CA-II mother seat

I-PEX has the production experience of the narrow-spacing cable components and connectors for decades. According to the system design needs of customers, provide customers with tailor -made solutions

Product Sales Overview on the JunctionX Platform:

JunctionX specializes in the professional production, distribution, and sales of connectors/authentic substitute connectors, wire harnesses, cable products, and customized injection-molded parts, stamping parts. If you want to purchase or learn more about product solutions, please feel free to contact us through the following methods.

Transmission comparison between ultra-fine coaxial bundle jumper connection and low transmission loss board connection

Are you looking for a solution to extend the required transmission distance while suppressing losses? Our ultra-fine coaxial bundle jumper connection can transmit approximately two to three times the distance compared to using a low transmission loss board at any speed.

1. Refer to the specifications for internal loss values; Budget for losses

With the increasing use of high-capacity storage devices, it is easier to appreciate high-resolution images and videos on consumer products such as personal computers, tablets, and smartphones. Therefore, the amount of information that needs to be processed on these devices has sharply increased, and the signal speed in the devices is becoming faster and faster.

However, the higher the speed of signal transmission, the greater the transmission losses such as conductor loss and dielectric loss that occur in the transmission path, making signal transmission more difficult. Therefore, according to transmission standards, there is a reference specification for internal loss values called loss budgeting.

For example, in the USB4 (* 1) specification Ver In the case of 1.0 [Thunderbolt 4 (* 2)], this is a 20Gbps (10GHz)/Lane high-speed transmission, and the loss budget for device A, cable, and device B is specified as -7.5 dB, as shown in the following figure.

2. Typical internal connection mode of USB4 (20Gbps (10GHz)/Lane)

If high-speed signals can be transmitted over long distances on PCB boards within a loss budget range of -7.5 dB, designers will have greater flexibility in designing their PCB boards. (1) When high-speed signals such as USB4 reach a certain transmission distance, low transmission loss boards can be used for transmission. However, the longer the transmission distance, the greater the loss in the transmission path, making it more difficult to transmit signals within the loss budget. Therefore, if the transmission path is long, measures need to be taken to suppress the losses generated in the transmission path.

Although the transmission distance can be extended by using ultra-low transmission loss boards, this may lead to a significant increase in the cost of mass production of products. Other measures to extend the required transmission distance while suppressing losses may be: (2) using jumper transmission paths suitable for high-speed transmission, or (3) using Retimer ICs to correct the attenuated signal waveform and reproduce the original waveform.

In this section, we conducted transmission loss comparison tests on (1) low transmission loss boards and (2) extremely fine coaxial line jumpers

3. Transmission comparison test results of the connection between ultra-fine coaxial bundle jumper and low transmission loss board

3.1 Comparison of transmission losses

CABLINE ®- VS II Very Fine Coaxial Bundle Jumper<Low Transmission Loss Board

3.2 Transmission Distance (USB4 (Thunderbolt 4) Specification (20Gbps (10GHz)/Lane)

CABLINE ®- VS II ultra-fine coaxial bundled jumper>low transmission loss board

3.2.1 Transmission using extremely fine coaxial bundle jumpers: 2 inches, 4 inches, 8 inches, 10 inches

3.2.2 Low loss board transmission: 2 inches, 4 inches

Based on the above measured results, calculate the maximum transmission length for each transmission path with a loss of -7.5 dB (for reference)

At any transmission speed, CABLINE ®- The transmission distance of the VS II ultra-fine coaxial bundle jumper is approximately 2 to 3 times that of using a low transmission loss board.


4. Test conditions

4.1 Dielectric constant: 3.7

(Generally, the dielectric constant of FR-4 board is about 4.7~5.0)

4.2 Specification of very fine coaxial bundle:

Transmission method: differential transmission

Test equipment: Network analyzer Keysight technologies E5071C

Measurement frequency: 20MHz~20GHz

Tested position: 1,2,3,4 (G, S, S, G)

Sample image

Produce low transmission loss boards and CABLINE of different lengths (2, 4, 8, and 10 inches) ®- VS II extremely fine coaxial bundle jumper and compare insertion losses.

Sample photos

Product Sales Overview on the JunctionX Platform:

JunctionX specializes in the professional production, distribution, and sales of connectors/authentic substitute connectors, wire harnesses, cable products, and customized injection-molded parts, stamping parts. If you want to purchase or learn more about product solutions, please feel free to contact us through the following methods.

Why is heat shrink tubing used for electronic wire harnesses? There are five benefits!

Wire harnesses are electrical components formed by combining and connecting various electrical elements such as cables, wires, and harnesses in fields like electronics, telecommunications, aviation, automotive, and medical industries. When manufacturing wire harnesses, heat shrink tubing is commonly used for protection and reinforcement. Here are the benefits of using heat shrink tubing for wire harnesses:

1.Wire Protection: The wires within the wire harness can be susceptible to damage due to contact or external friction. Heat shrink tubing effectively protects the wires from external interference and damage, thereby enhancing the stability and reliability of electronic devices.

2.Short Circuit Prevention: Heat shrink tubing effectively prevents short circuits between wires, reducing the risk of damage to electronic devices.

3.Waterproof and Moisture-resistant: Heat shrink tubing provides excellent waterproof and moisture-resistant properties, protecting the wires from damage caused by water and moisture.

4.Enhanced Appearance: After being wrapped with heat shrink tubing, wire harnesses have a more aesthetically pleasing and neat appearance, improving the overall look and perceived quality of electronic products.

5.Convenient Maintenance: In case of wire failures or replacements within the wire harness, the heat shrink tubing can be easily cut open to access and replace the wires, facilitating maintenance and replacement procedures. In summary, using heat shrink tubing for wire harnesses offers advantages such as protection, waterproofing, enhanced appearance, and convenient maintenance. It is a crucial material for the protection of electronic equipment.

Product Sales Overview on the JunctionX Platform:
JunctionX specializes in the production, distribution, and sales of various brands of connectors, wire harnesses, cable products, as well as offering custom processing for injection molded parts, stamped parts, and mold projects. If you wish to purchase or learn more about our product solutions, please feel free to contact us using the following methods.

How to reduce the likelihood of electronic wire harness damage? Here are 5 points to consider!

Electronic wire harness is an important component that connects electrical components in electronic devices. It consists of numerous small wires that need to pass through various mechanical parts. Therefore, improper installation or inadequate maintenance of the wire harness can lead to damage and disrupt the normal operation of the equipment. Here are several methods to reduce the likelihood of electronic wire harness damage:

1.Conduct rigorous inspections before installation: Prior to wire harness installation, a thorough inspection should be conducted to check for any breaks, wear, insulation damage, or other issues, ensuring that the wire harness meets the required quality standards.

2.Maintain cleanliness around the wire harness: The environment surrounding the wire harness should be kept clean to prevent contamination from dust, grease, and other impurities, which can potentially cause damage or aging of the wire harness.

3.Proper arrangement of the wire harness: The wire harness should be arranged in a reasonable manner to avoid unnecessary bending, stretching, and other operations that may subject the wire harness to excessive tension, leading to damage.

4.Use high-quality wire harness materials: The quality of the wire harness materials is a critical factor affecting the lifespan of the wire harness. Therefore, when selecting a wire harness, it is important to choose high-quality materials and avoid using inferior ones.

5.Use appropriate tools: When repairing or replacing the wire harness, it is essential to use appropriate tools and avoid excessive force or improper methods that may cause damage to the wire harness.

 In conclusion, maintaining cleanliness, properly arranging the wire harness, choosing high-quality materials, and using appropriate tools can effectively reduce the likelihood of wire harness damage and prolong the lifespan of electronic devices.

What is a coaxial cable?

1.Basic structure of the cable

A cable with a simple structure and a conductor wrapped with a layer of coating is called an electronic wire. The cable with multi-layer structure, the center conductor is wrapped with an insulating layer, the outer conductor and the outer layer are called ultra-fine coaxial cables. The outer conductor of the coaxial cable plays the role of electromagnetic shielding, and the electrical signal transmitted through the central conductor is not easily affected by external electromagnetic waves (electromagnetic noise).

2.What is Micro Coaxial Cable?

The size of the center conductor used in the coaxial cable adopts the American Wire Gauge (AWG) standard, and the larger the AWG number, the smaller the size of the center conductor.
In general, coaxial cables with an outer diameter (OD) of 1 mm or less are referred to as “micro-coaxial” cables. Ultra-thin coaxial cables are widely used for signal transmission between internal module boards of personal computers, tablet computers, smart phones and other equipment, as well as signal transmission between precision instruments such as medical, industrial, automotive and aviation.

Why is ultra-fine coaxial cable the preferred choice for high-speed applications?

1.Characteristics and Applications of Ultra-fine Coaxial Cable

With the increasing use of high-speed internet and high-capacity storage devices, it has become easier for us to enjoy high-quality images and videos on consumer products such as personal computers, tablets, and smartphones. The amount of information that needs to be processed in these devices has dramatically increased, and the signal speeds (transmission standards) within the devices are becoming faster.

Cables and FPC/FFC (Flexible Printed Circuit/Flexible Flat Cable) are primarily used as jumper connections for signal and power transmission between module boards in devices. The choice between cables and FPC/FFC is determined to some extent by the signal speed (signal transmission standards) and transmission distance.
The above-mentioned coaxial cables include ultra-thin coaxial cables and twin-core cables.

With the increasing signal transmission speed in recent years, the application of ultra-thin coaxial cables in jumper devices has become increasingly widespread.

2.The signal transmission advantages of ultra-thin coaxial cables.

The signal transmission characteristics are influenced by several parameters, including impedance, insertion loss, return loss, and crosstalk. Here are some key reasons why ultra-thin coaxial cables are generally considered to have signal transmission advantages in high-speed signal transmission.

2.1Reduce return loss: The center conductor, insulation material, and outer conductor of ultra-thin coaxial cables are properly matched, resulting in stable performance at a specific impedance. The matched and stable impedance results in low return loss.

2.2Reduce insertion loss: Compared to FPC/FFC, ultra-thin coaxial cables can ensure a larger cross-sectional area of the center conductor when matching a specific impedance, thereby minimizing insertion loss to the maximum extent possible.

2.3Improve shielding performance: The outer conductor plays a role in electromagnetic shielding, thereby reducing the susceptibility of the electrical signals transmitted through the center conductor to external electromagnetic waves (electromagnetic noise). Additionally, the shielding effect of the outer conductor helps reduce crosstalk between signals.

3.Mechanical advantages of ultra-fine coaxial cables.

The reason for commonly using ultra-fine coaxial cables is their higher flexibility compared to shielded FPC/FFC, allowing them to maintain stable electrical characteristics even when bent.

Flexible ultra-fine coaxial cables are suitable for devices with rotating shafts where cables need to be routed within the device, such as in laptops, tablet hinges, and moving cameras on drones. With the increasing demand for applications including high-definition cameras and displays, along with faster signal transmission speeds, ultra-fine coaxial cables that combine high-speed signal characteristics with mechanical advantages have become the preferred solution.