In the Ka band, the solderless microwave vertical interconnection uses the hairy button as the connecting part, and two back to ground coplanar waveguide (CB CPW) transmission lines are connected by screw assembly. Finally, the passband of the microwave vertical interconnector is 26-37 GHz, the insertion loss is less than 0.4 dB, and the return loss is more than 15 dB
       In recent years, millimeter wave system has been widely used in radar, guidance, communication, recognition and other fields because of its high precision, strong anti-jamming ability, small size and light weight. Ka band active phased array radar is one of the hot spots.
       Three dimensional assembly technology is a new and high technology which has been developed rapidly to meet the needs of small-scale, lightweight, high integration, high reliability and low cost of electronic equipment. The core of three-dimensional assembly is to realize the reliable vertical interconnection between different functional modules and signals between layers. For the transmission of microwave signal, the traditional vertical welding interconnection mode can not meet the requirements of good microwave performance, miniaturization and easy disassembly.
       With the rapid development of active phased array radar technology, the three-dimensional packaging requirements applied to the Ka band T / R module are particularly urgent. There have been some researches on three-dimensional microwave multi chip interconnection at home and abroad, among which the main application direction is to use fuzzy button as the connector.
       This technology not only has excellent high frequency performance and reliable connection, but also has low cost and easy disassembly.
       Finally, the return loss of the connector is more than 15dB and the insertion loss is less than 0.4db in the range of 26 to. 37ghz, and the structure is simple and easy to disassemble.

       Floss Pin®（i.e. Fuzz Button or CIN::APSE） is a patent product of Luoyang Fuzz button Interconnect Technology Co.,Ltd.  It is the most reliable and advanced welding compression-style interconnect technology。It provides the board-to-board advantages for high-speed telecom，stringent military and aerospace，and demanding automotive applications。

      It is the ideal interconnect solution for vertical interconnection of the microwave module，Ideally suited for applications in which high reliability，high-speed signals，tight envelope dimensions，high density，and extreme environmental conditions need to be met。

      We are the first company successfully developed and mass production the Fuzz Button® or CIN::APSE® in the China。The product performance is leading inChina, and the key parameters have reached the level of similar products such as fuzy buttons®  from Custom Interconnects in theUSA.

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