Steering the Focus: Programmable Phase Shifters

Posted by Scott Blanchard on Oct 5, 2016 9:00:00 AM

Phase shifters are used in countless applications, with one of the most popular being phased array antennas. These antennas do not require a gimbal to keep the beam stabilized. Without this technology the antenna and/or satellite would have to physically adjust itself in three dimensions to simply stay on target―which can prove to be a difficult task, especially where some applications require accuracy within a fraction of a degree. Instead, beams are formed by shifting the phase of the signal emitted from each radiating element in the structure. This provides interference to steer the beams in the desired direction. 

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Topics: Phase Shifters

Q & A with Vaunix: Using Lab Brick Phase Shifters Over Wide and Varying Temperature Ranges

Posted by Scott Blanchard on Dec 1, 2015 10:00:00 AM

In our Q & A blog series, we’ve addressed some of the most important and technical questions about our Lab Bricks. We hope these answers give you a better understanding of how our products work.

Q. We would like to connect 48 Lab Brick LPS-402 phase shifters to a computer via an Ethernet-to-USB hub while operating over a wide range of temperatures. What are the operating temperatures and environmental constraints for the LPS-402, what is their operating lifetime, and how fast can they be switched?

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Topics: Phase Shifters, Lab Brick, Q & A

Q & A with Vaunix: Phase and Accuracy of Lab Brick Phase Shifters

Posted by Scott Blanchard on Nov 17, 2015 10:00:00 AM

In our Q & A blog series, we’ve addressed some of the most important and technical questions about our Lab Bricks. We hope these answers give you a better understanding of how our products work.

Q. What is the phase accuracy and repeatability of Lab Brick phase shifters?

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Topics: Phase Shifters, Lab Brick, Q & A

Q & A with Vaunix: Controlling Lab Brick Phase Shifters Using Linux

Posted by Scott Blanchard on Nov 3, 2015 10:00:00 AM

In our Q & A blog series, we’ve addressed some of the most important and technical questions about our Lab Bricks. We hope these answers give you a better understanding of how our products work.

Q. Can Lab Brick phase shifters be controlled using Linux?

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Topics: Phase Shifters, Lab Brick, Q & A

Q & A with Vaunix: Antenna Testing using Lab Brick Phase Shifters

Posted by Scott Blanchard on Oct 20, 2015 10:00:00 AM

In our Q & A blog series, we’ve addressed some of the most important and technical questions about our Lab Bricks. We hope these answers give you a better understanding of how our products work.

Q. We would like to use Lab Brick phase shifters to measure the radiation pattern of a four-element antenna array in a beam forming configuration. The set-up would include one signal generator, one 1-to-4 splitter, four phase shifters, and a four-port antenna. Vaunix specifies phase shift accuracy as +-2.5 deg., so in our scenario using four phase shifters does each one apply a phase shift with an error of +-2.5 deg. or will all have the same error (that is, all having +1.3 deg.)? Also, is phase stable over time or does it oscillate around the programmed value by +-2.5 deg., and will all four oscillate equally? Finally, does the phase shifter introduce a delay? If so, is it the same for all devices? 

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Topics: Phase Shifters, Lab Brick, Q & A

Getting to Know Lab Brick Part Four: Attenuators

Posted by Scott Blanchard on Mar 10, 2015 11:07:49 AM

Few instrument set-ups are complete without attenuators, as without them your ability to evaluate the performance of your device under different conditions would be severely limited. Our Lab Brick attenuators combine both the performance and the configurability you need to provide a wide range of measurement flexibility, and setting them up is performed the exact same way as all of our products – from a single display. (If you're unfamiliar with our Windows-based Lab Brick software, start with the first post in this series to learn more.)

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Topics: Software, Phase Shifters, Lab Brick, attenuators, digital attenuators

Getting to Know Lab Brick Part Three: Phase Shifters

Posted by Scott Blanchard on Feb 18, 2015 5:00:00 PM

My first blog in this series described the value and capabilities of Lab Brick software and the second described the function of our Lab Brick signal generators, so now let’s look into our Lab Brick phase shifters.

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Topics: Software, Phase Shifters