Anritsu has been granted a patent for a signal generation apparatus that includes a signal generation unit, DA converter, variable attenuators, and a measurement unit. The system features a switch for internal and external signal paths and a control unit for calculating correction values of attenuation amounts. GlobalData’s report on Anritsu gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Anritsu, Wireless network optimization was a key innovation area identified from patents. Anritsu's grant share as of July 2024 was 51%. Grant share is based on the ratio of number of grants to total number of patents.
Signal generation apparatus with variable attenuators and measurement unit
The granted patent US12074580B2 describes a signal generation apparatus designed to produce and manage radio frequency signals. The apparatus includes a signal generation unit that creates a digital signal, which is then converted into an analog signal by a digital-to-analog (DA) converter. This analog signal is subsequently attenuated by multiple variable attenuators. A measurement unit detects the level of the attenuated signal, which can pass through semiconductor components. The system features a switch that allows for the selection between an internal path, directing the signal to the measurement unit, and an external path, which outputs the signal from an output terminal. A control unit is responsible for calculating a step error value, which serves as a correction for the attenuation amount across various steps, taking into account the impact of impedance changes due to the switch's operation.
The patent further elaborates on the methods employed by the control unit to calculate step errors for two distinct variable attenuators. The first variable attenuator, less affected by impedance changes, utilizes the internal path for its calculations, involving a series of initial and iterative error calculation processes. Conversely, the second variable attenuator, which is more sensitive to impedance variations, relies on the external path for its step error calculations. The detailed processes for both variable attenuators include setting reference values based on the gain of the signal generation unit and the attenuation amounts, followed by iterative adjustments to refine the step error values. This structured approach aims to enhance the accuracy and reliability of signal generation and measurement in various applications.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
