TIMES MICROWAVE SYSTEMS produces the MILTECH TM family of hermetically sealed flexible RF and microwave transmission line assemblies optimized for military and other demanding applications. These cables exhibit extremely long life in the rigorous envir

TIMES MICROWAVE SYSTEMS produces the MILTECH TM family of hermetically sealed flexible RF and microwave transmission line assemblies optimized for military and other demanding applications. These cables exhibit extremely long life in the rigorous envir MILTECH ^™
High Performance Cable Assemblies

TIMES MICROWAVE SYSTEMS produces the MILTECH ^™ family of hermetically sealed flexible RF and microwave transmission line assemblies optimized for military and other demanding applications. These cables exhibit extremely long life in the rigorous environments found in airborne, shipboard, and ground based applications.

   TMS Assembly      Cable Diameter      Loss @ 2 GHz       Loss @ 18 GHz     
  Specification         inches (mm)         (dB/ft)             (dB/ft)       

  
  MILTECH 210          .210 (5.3)            .16                 .48          

  MILTECH 230          .230 (5.8)            .12                 .38          

  MILTECH 265          .265 (6.7)            .10                 .32          

  MILTECH 340          .340 (8.6)            .07                 .22          

  MILTECH 480          .480 (12.2)           .05            .13 (at 10 GHz)

Detailed information regarding the performance of these sealed transmission lines is found in the individual TMS specifications.

TYPICAL PERFORMANCE SPECIFICATIONS

Electrical Characteristics

Tested Frequency Range       .5 to 18 GHz (10GHz for MILTECH 480)         

Characteristic Impedance     50 Ohms                                  

VSWR                         1.4:1 maximum; add .05 per angle         

Insertion Loss                per TMS Detail Specification            

Velocity of Propagation       per TMS Detail Specification            

Maximum Operating Voltage    2500 Volts (1000 volts with SMA)         

RF Leakage                   -90 dB maximum  per foot over Tested     
                             Frequency Range including connectors     

Insertion Loss Stability     In accordance with MIL-T-81490           

VSWR Stability               In accordance with MIL-T-81490

Mechanical Characteristics

Operating Temperature Range       -55 to +150 degrees C                    
                                  (200 C maximum available on request)     

Chemical Resistance               In accordance with MIL-T-81490 and       
                                  MIL-C-87104                              

Flexure                           In accordance with MIL-C-87104           

Salt Fog                          In accordance with MIL-T-81490 and       
                                  MIL-C-87104                              

Humidity                          In accordance with MIL-T-81490 and       
                                  MIL-C-87104                              

Abrasion Resistance               In accordance with MIL-T-81490 and       
                                  MIL-C-87104 /  .020" edge                

Cable Connector Tensile Strength  per TMS Detail Specification             

Vapor Leakage                     1x10-5 cc/sec/ft  of Helium maximum      
                                  including connectors                     

Vibration                         In accordance with MIL-T-81490           

Shock                             In accordance with MIL-T-81490

MILTECH ^™ ASSEMBLY PERFORMANCE OVERVIEW

Electrical Characteristics - All of the MILTECH cable assemblies noted above provide true low loss, low VSWR - and inherently stable - performance. These sealed transmission line products provide the longest service life available.

Mechanical Characteristics - These cable assemblies are designed, manufactured, and tested to provide reliable interconnections in the most demanding installations and environments. This unparalleled combination of bending, torque, and tensile strengths guarantee a long service life.

Insertion Loss - Each TMS detail specification presents a graph of loss vs. frequency for the assembly. Also included are a table of losses at various frequencies, and an equation to be used for calculating losses at specific frequencies.

Testing - Each Cable Assembly is measured for Insertion Loss and VSWR over the Test Frequency Range per the TMS detail specification.

Connectors - All of the connectors used in these cable assemblies are of a precision Stainless Steel design which meet or exceed the requirements of MIL-C-39012. They are uniquely designed to provide maximum electrical, mechanical, and environmental performance.

Connector materials include: Gold Plated Beryllium Copper for Contacts, PTFE (Polytetrafluoroethylene) Dielectrics, and Bodies and Coupling Nuts of Stainless Steel.

Replaceable Front End Connector Types thread onto a factory installed Universal Intermediate Section. This design approach provides for easy replacement of a connector in the event of damage, or when the need arises to change to a different type of interface or angular configuration.

Cable Construction and Materials - The vapor sealed cable materials include: Silver Plated Copper strips and round wires for the Conductors, Polytetrafluoroethylene Tape for the Dielectric Core, Aluminum Backed Tape Interlayer Seals, Outer Vapor Seals of FEP / Composite Tapes, and an Outer Jacket of Nomex^®.

ORDERING INFORMATION

Creating a complete TMS part number is described in the applicable TMS specification.

Cable assemblies with special requirements are issued distinct TMS part numbers.

Contact your Times Microwave Systems representative for additional information.