The approach employed in the ME7838A takes less time, is less tedious, and more accurate than the conventional method of adjusting power level in the millimeter band through the use of electronically controlled mechanical attenuators and power linearity correction tables.
The VectorStar broadband system provides an accurate and fast real-time method to sweep power for compression measurements. The result is that the ME7838A performs the most accurate gain
compression measurements on high-frequency active devices in the industry.
With the ME7838A design, mmWave modules can be mounted close to or directly on the wafer probe. This advantage, as well as the fact that the ME7838A transitions at 54 GHz, gives the broadband VNA the widest dynamic range in its class – 107 dB at 110 GHz and 92 dB at 125 GHz.
The ME7838A is the first broadband VNA to provide good raw directivity throughout the entire frequency range, due to its innovative design and elimination of the MUX combiners used in traditional systems.
Best-in-class raw performance allows the ME7838A to offer engineers and designers improved calibration and consistent measurement stability of 0.1 dB magnitude and 0.5 degree phase across the entire 70 kHz to 110 GHz frequency range over a 24-hour period. Measurement speed is 55 ms for 201 points at 10 kHz IF bandwidth, 10 times faster than comparable broadband VNA systems.
The design of the ME7838A provides users with configuration advantages, as well. Its use of smaller, lighter RF and mmWave modules reduces the need for large bulky positioners that add expense. The modules are also more cost-efficient, and free bench space that can be used for other probes and devices necessary for wafer measurements.
By TelecomLead.com Team
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