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THE ARDENT
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Week of September 5, 2016                                                                                                                          Issue No. 14
Defense/Aerospace Products 
Ardent’s patented interconnect technologies including mezzanine connectors are tested and qualified for mil-spec applications. As an engineer designing defense and security applications, you need an interconnect solution that can stand up to the harshest environments. Count on Ardent to design and build your military grade mezzanine connector solutions that meet event the smallest, tightest, highest density requirements. We are proud to be American based and take pride in our ability to deliver reliable, robust components to an industry so vital to our country’s security. Our engineering team is ready to work with you to ensure that the reliability and performance of your board to board connectors including mezzanine connectors exceeds all specifications. 
  • Shock and vibration to 25 Gs with no disconnect
  • Consistent DC resistance over extreme temperature ranges
  • An ultra-reliable compression interface with NO SOLDER JOINTS
  • Custom interconnect systems with virtually ZERO MECHANICAL FAILURE issues.
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CA Series™: Connectors & Interposers
Ardent’s CA Series™ high performance 32 Gbps compression mount connectors & interposers offer exceptional signal integrity and high density for applications like high speed backplane, mezzanine, edge card, and optical at a 0.4mm pitch in a pure vertical interface – no offset required. Reliable under extreme conditions CA Series™ connectors can stand up to the most demanding environmental factors. Custom configurations are available in a wide array of pitch, density, stack height, and orientation.
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In the News: Qualcomm and AT&T Are Joining Forces on a New Drone Project
If drones are going to take to the skies en masse, there needs to be a way for all those flying robots to link up to a network. Besides being able to keep track of drones so they don’t smash into buildings, a network connection could make it easier for the drones to transmit data, such as aerial photography, back to a company’s data centers or cloud computing services.
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CROSSTALK, NEAR AND FAR
Written by: Stephen Cristaldi, Applications Engineer
When talking about signal integrity, many engineers usually refer to (3) major components; Insertion loss, return loss, and crosstalk. Today we will briefly discuss crosstalk. Crosstalk simply refers to the action of a signal causing noise on an adjacent transmission line. The name “crosstalk” originally comes from analog telephones, were one could hear other voices due to nearby lines. Crosstalk is typically expressed in dB over a frequency range, as shown below.In high speed circuitry, there are usually two forms of crosstalk worth mentioning, and that is near end crosstalk (NEXT) and far end crosstalk (FEXT).  Near end crosstalk (NEXT) refers to the amount of crosstalk closest to the driving source of the signal. Far end crosstalk (FEXT) refers to the amount of crosstalk closest to the receiving source of the signal. Commonly, most folks are more concerned with far end crosstalk (FEXT) when designing high speed circuits.  An example of how the far end crosstalk is measured is shown below.
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