INCREASE OF THE UNIFORMITY OF PHASE-FREQUENCY CHARACTERISTICS OF BROADBAND MATCHING DEVICES AND FILTERS OF THE MODIFIED APPROXIMATION FUNCTIONS
Article Sidebar
Main Article Content
Abstract
Described the possibility of increasing the linearity characteristics fazachastotnoy in the broadband matching and filtering using a modification of the classical approximation functions. The results of the modified Chebyshev approximation function of the fifth order by the maximum group delay linearity. The analysis of the modified fifth-order Chebyshev function and its comparison with the classical fifth-order Chebyshev function under the same conditions . It is shown how the implementation of the modified fifth-order Chebyshev filter. It is noted that the modified Chebyshev function of order 5 with respect to the classical Chebyshev function has less unevenness in the band matching (filtration), a smaller value of the approximation error on the integral criterion, a lower level of non-uniformity (PFC) in the band of negotiation (filtration).
Article Details
This work is licensed under a Creative Commons Attribution 4.0 International License.
References
Software tool for the design of narrow band band – pass filters / A. Garcıa Lamperez [et al.] // Microwave Symposium Digest, 2001 IEEE–MTT–S International. – 2001. – Vol. 3. – P. 2103–2106.
Hisham, L. Generalized Chebyshev-like Approximation for Low-pass Filter / L. Hisham // Electrical and Electronic Engineering. – 2011. – Vol. 3, № 1. – P. 5–8.
Бойкачев, П.В. Метод модификации аппроксимирующих функций для синтеза фильтров и согласующих цепей / П.В. Бойкачев, Г.А. Филиппович // Вестн. Воен. акад. Респ. Беларусь. – 2012. – № 3(36).
Бойкачев, П.В. Широкополосный синтез согласующих устройств на основе модифицированной аппроксимации функции передачи / П.В. Бойкачев // Вестн. БелГУТ. – 2013. – № 2(25).
Ланнэ, А.А. Оптимальный синтез линейных электрических цепей / А.А. Ланнэ. – М.: Связь, 1969. – 37 с.