Method for Increasing the Linearity of The Phase in The Approximation Phase On 5G Antennas Using Modified Functions of The Subtractors
Assel Yerzhan, Balausa Nakisbekova, Zhanat MANBETOVA, P.V. Boikachev, Arailym Nussibaliyeva · Trudy Universiteta · 2024
The possibility of reducing the phase distortion of the signal spectra in the input paths at the stage of approximation of frequency characteristics is shown. Noticeable progress in the technology of satellite and mobile telecommunications systems, as well as in radar systems, is largely associated with the use of broadband and ultra-broadband signals. Thus, in 2012-2013, the development of Wideband High Frequency (WBHF) radio technology (hereinafter referred to as broadband HF (HF) radio communication) took place in the direction of increasing data transmission rates over HF (HF) radio channels to meet the needs of subscribers of the armed forces of NATO countries. The development of broadband HF (HF) radio communication has led to the revision of the following NATO standards and their release in a new edition: - MIL-STD-188-110C «Interoperability and operational requirements for data modems», 03.01.2012; - MIL-STD-188-141C «Functional compatibility and operational requirements for medium and high frequency radio frequency systems», 12/27/2011. The work carried out experiments to compare frequency characteristics. The changes are also related to the introduction of broadband HF (HF) radio communication technology, which defines a family of broadband modulation types for a radio channel with the necessary bandwidth of the end-to-end amplitude-frequency response (AFC) of the transceiver path from 3 kHz to 24 kHz in 3 kHz increments.