Frequency selectable RF power sensor extends to 70 GHz

September 22, 2016 // By Graham Prophet
Claimed as a technology first by Anritsu, the Power Master MA24507A mmWave power analyzer provides frequency coverage up to 70 ghz with high dynamic range, and comes in a format that the company describes as ‘ultraportable’.

The millimetre wave power analyzer enables simple, numeric, frequency based measurement of RF power from 9 kHz to 70 GHz. The first frequency selectable RF power analyzer, the Power Master MA24507A employs Anritsu’s Shockline technology to address the growing number of test requirements in mmWave applications, including test of 802.11ad, Wireless HD, and E-band products, at every stage of the product lifecycle.

 

As signal frequency increases, attenuation due to the air or cabling grows, which can make power measurements particularly difficult at mmWave frequencies. The Power Master MA24507A’s ultraportable size overcomes this challenge by enabling users to place it directly at the signal source, including on-wafer measurements. When system losses are unavoidable, the MA24507A can make measurements as low as -90 dBm at 70 GHz, making it a superior alternative to large benchtop instruments, which can be unwieldy in the field. USB-powered (the interface is USB 3), and consuming 900 mA max, the Power Master MA24507A measures 155 x 84 x 27 mm and weighs 282g – somewhat bigger than a smartphone. It can be used to make measurements on antenna towers or with an extension pole to measure small cell signals from the ground.

 

Because the Power Master MA24507A enables frequency selective power measurements, users can differentiate intended signals from unintended signals for the first time. With spans from 1 kHz to full span over the entire frequency range, the Power Master MA24507A can zero in on a signal of interest in harsh environments, including those with unintended signals that can impact power readings. This enables measurements such as channel power and adjacent channel power to be made, while avoiding spurs and harmonics.

 

No reference calibration is required. The power analyzer can stay connected to a test system constantly, eliminating the need to disconnect and reconnect it between test procedures. Added features include a Power Hunter mode to identify the six highest CW amplitudes and their