ROHO CONNECTOR LIMITED

    In the field of wireless communication, microwave RF test cable is a kind of commonly used high-precision system test consumable, which is used in conjunction with test instruments.      Any DUT is located between the signal generator and the analyzer, and the bridge between the DUT and the instrument is the test attachment or test system.Do not neglect these test accessories, when possible, it is best to solidify these test accessories into a standardized measurement system.When the instrument supplier provides the complete machine, the maximum test cable will be provided in accordance with the highest operating frequency of the instrument.However, in the real test process, there will be a variety of different situations that require the use of different attachments, all of which will affect the accuracy of the measurement results, which requires the tester to have an in-depth understanding of the relevant test attachments.     When selecting the specification of the cable in the test system, in addition to considering insertion loss and VSWR, the stability of the cable must be better.In the frequency and microwave frequency bands, the commonly used cables are divided into semi-rigid cables, semi-flexible cables and flexible braided cables.Flexible cable as a "test - level" cable.Compared with semi-rigid and semi-flexible cables, the cost of flexible cables is relatively high, which is because more factors should be considered in the design of flexible cables.Flexible cables that are easy to bend multiple times and still maintain performance are essential for testing cables.Soft and good electrical indicators are a pair of contradictions, is also the main reason for the increase in costs.The flexible cable must be stable in amplitude and phase under bending conditions.     Generally speaking, single-stranded inner conductor cable is conducive to amplitude stability;Multi-strand inner conductor cable is conducive to the stability of the phase, it can be seen that only these two indicators are difficult to complete..Pay attention to the joint and cable connection parts of the process, which will affect the life of the cable.In this area, the traditional cable and connectors between a hard point of contact, it is easy to cause the fracture of the cable, which is most of the test engineer in the use of traditional cable testing the most headache problem in the process, and this is not a simple use heat shrinkable casing can solve, because this kind of fracture is often hard contact test cable after frequent bending, tension by cable transmission to hard contact, aging and rupture caused by hard contact.It is needless to say that the traditional flexible test cable without armoring can not effectively extend the service life of the test cable even if the enhanced heat-shrinkable sleeve is used at the cable and the joint because there is no armoring protection.     However, due to the gap betw...

    From the application field, the largest market segment of RF connector adapters is telecommunications or data communication, consumer electronics and electronic computers and peripheral equipment.The second is automobile, industrial automation and instrumentation.connector adapters are less important in China's domestic market than globally;The third largest market is medical equipment, aerospace military, railway and traffic control, and power supply and distribution equipment.      The importance of RF coaxial connector adapters in electronic systems is often underestimated.Many designers of electronic systems have had similar experiences: using the cheapest connector, but often ending up paying more.Faulty connector selection and use can result in system failure, product recall, product liability cases, circuit board damage, rework and repair, which in turn can lead to sales and customer loss.Therefore, in the design of electronic products, please do not underestimate the importance of connector adapters, or it will only be penny wise and pound foolish.The importance of selecting a suitable connector for electronic devices can be seen.     So, how do you choose a connector adapters?Due to the impact of the economic crisis, cost will be taken into account in the design, but in addition, more attention should be paid to the high quality and stability of the product, as well as the design characteristics of the connector itself.I think the following aspects of the innovative design of ERNI connector can provide some reference for electronic designers:     First: the idea of dual-rod design.In the ERNI connector series, the dual rod design idea runs through the whole process.Figuratively speaking, the double bar design can be described as "kill two birds with one stone".Optimized terminal design ADAPTS to high speed signal transmission and provides higher directional tolerance.In comparison of inductance, capacitance, impedance, etc., the two-bar terminal structure is reduced for high-speed applications and optimized to minimize discontinuity.The dual rod design allows multiple connector adapters to be placed on a single circuit board without plug or short circuit problems, eliminating the need for a large number of signals on a single connector.The simple wiring of the two rods can save space, make the connector smaller and simplify the detection of welding pins.Like 12 on a board.It also reduces rework costs.Practical applications such as telecommunication end-user equipment.     Second: design of pin without depression in assembly process.Traditional stamping will cause bending or deformation pin due to improper handling, the bending process will cause capillary cracks, from the long-term product is not desirable, but also affect the circuit performance and cost.ERNI USES the direct stamping to the bending Angle, the stamping terminal can avoid the capillary crack caused by the ben...

    Main name:     The main nomenclature of the RF coaxial connector adopts the international common nomenclature nomenclature, and the nomenclature of the different structural forms of the specific product is specified by the detailed specification.     Structural form code:     Table 1: classification of structural forms and codes (separated by "-")     Example of model composition of RF connector:     Example 1: SMA-JW3 represents SMA connector bent radio frequency plug, the conductor of the plug is the pin contact, with syv-50-2-1, RG316/RG316D, sff-50-1.5-1 and other radio frequency cables.     Example 2: SMA - 75 JHD said SMB straight type ha ha the impedance of the condensation on the circuit board is 75 Ω radio frequency socket.     Model name and composition of adapter:     Adaptor and impedance adaptor models are derived from the plug or socket models. Generally, the main designation of the adaptor model is indicated by the connector master designation (within the series adaptor) or in the form of a score (between the series adaptor).     Case 1: SMA - JK said adapter in the SMA type 50 Ω series, end of the needle of the side hole for contact and contact.     Case 2: N/SMA - JK says end for N type needle contact element, the other end for SMA type hole contact element, the impedance of 50 Ω adapter.     Example 3: SMB said end of 50 to 50 j / 75 k Ω needle contact element, the other end of the 75 Ω hole contact type of SMB adapter.