RF Academy–Wireless

Learn about relevant wireless standards such as WLAN, GSM, UMTS, and LTE/LTE-A. Watch videos that illustrate common test procedures and review application notes that include background on each standard as well as detailed test procedures.

Download the in-depth application notes

  • Effects of Quadrature Impairments on 802.11ac EVM
    Learn how IQ gain imbalance, quadrature skew, and DC offset affect modulation quality of 802.11ac signals.
  • Using Noise Compensation to Improve ACLR
    Learn how to make WCDMA measurements using the vector signal transceiver.
  • How to Test LTE Devices
    Learn how to measure power, spectral emissions, and modulation quality.
  • How to Test WLAN Devices
    Learn how to test and analyze 802.11ac, the wireless standard that's pushing the limits of test instruments.
  • Interpreting the CCDF Display
    Watch as we analyze the power characteristics of a two-tone signal and waveforms for wireless standards such as UMTS and LTE.
  • LTE In-Band Emissions Measurement
    Discover how quadrature impairments in direct upconversion transmitters can introduce in-band spectrum emissions.
  • Take Best-in-Class ACLR Measurements
    Watch the PXIe-5668R measure better than 86 db ACLR performance on a WCDMA signal.
  • Measure Harmonics up to 26.5 GHz
    Simplify harmonics measurements using the new RFmx measurement API.
  • RF to DC Synchronization in Envelope Tracking PA Measurements
    Discover how factors such as DC to RF synchronization can affect measurement quality when testing envelop tracking (ET) power amplifiers (PAs). In addition, see how you can use digital predistortion (DPD) techniques to correct for AM-AM/PM distortion and improve PA performance.
  • Introduction to Memory Poloynomial DPD Algorithm
    Learn how to apply digital predistortion (DPD) techniques such as the memoryless AM-AM/PM lookup table and memory polynomial model when correcting power amplifier (PA) behavior. This video explains how each of these algorithms corrects for various nonlinear behaviors such as AM-AM distortion and memory effects.

Application Notes

LTE/LTE-A

Get an introduction to LTE and LTE-A. Topics include the fundamentals of OFDMA, SC-FDMA, physical channel definitions, and an introduction to MIMO. This application note also provides an introduction to transmitter and receiver measurements and specification limits.

WLAN

Learn more about the 802.11 standard from 802.11a through 802.11ac. This application note provides insight into the structure of the physical layer and introduces both the measurement procedures as well as the test limits for each of the transmitter and receiver measurements.

Bluetooth

Learn more about the Bluetooth standard from version 1.0 through 4.2.2 of the Bluetooth specification. This application note provides insight into the structure of the Bluetooth physical layer, covers transmitter and receiver measurements, and includes details on measurement configurations and specification test limits.

GSM

Read about the fundamentals of the GSM standards including modulation schemes, physical channels, and the evolution to EDGE. Also learn about typical GSM transmitter and receiver measurements and specification limits.

UMTS

Learn the nuts and bolts of the UMTS standard, from the fundamentals of wideband CDMA to its evolution to HSPA+. This application note covers each of the transmitter and receiver measurements and includes details on measurement configurations and specification limits.

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Learn at Your Own Frequency

Whether you’re a seasoned engineer looking to solve new RF challenges or a new engineer hoping to understand the fundamentals, RF Academy can help. Check out all the whiteboard-style tutorials, “how-to” videos, and in-depth application notes.

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