IPEX MHF RF178 (20278-111R-18) coaxial connector has 2.5mm Max. mated height, the relevant micro coaxial cables is  RG178 , the length of the cables can be customized.

         We also supply IPEX I-IPEX MHF Plug:
                  20279-001E-01(MHF I,II Receptacle)
　           　20278-111R-13, 20278-111R-32, 20278-111R-37, 20278-111R-18
　　           20311-011R-08(MHF II)
　　           20367-001R(MHF III)  
         The only 2.5mm mated height and frequency of 6GHz, IPEX MHF Coaxial Connector / Cable is the most popular coaxial connector / cable in global market. IPEX MHF Coaxial Connector can mate with Hirose U.FL Coaxial Connector well, and has been generally applicated to various electronic products.
          IPEX MHF cable transmit RF signal for two different PCBs or between PCB and Antenna. Both end MHF connectors or one end MHF plug to RF Coaxial Connector like SMA, SMB, FME, MMCX, MCX, TNC, RP type are easy to be found in our product lines.
         Just advise clear specification of both end connectors, cable group with length, and quantity, we will offer the best price and lead time as soon as we can.