Б. В. Чернышев
Специальное
конструкторское бюро Института радиотехники и электроники
им. В.А.Котельникова РАН,
141120, г.
Фрязино Московской области, пл. Введенского, 4
Статья
поступила в редакцию 7 июня 2017 г.
Ключевые слова: симметричная
вибраторная антенна, магнитная антенна, цепь согласования.
Abstract. Matching
circuit based on the Chebyshev bandpass filter and L-shaped matching circuit
are compared in order to provide broadband matching of the shorted antennas with
the feeder. A method for matching antennas is proposed using a two-link
Chebyshev bandpass filter, the elements of a serial loop of which are either a
capacitive component of the resistance of radiation of a shortened dipole antenna
or an inductive component of a magnetic antenna. The calculation of matching circuits
has been carried out for a shortened dipol antenna and a magnetic antenna. The graphs
of AFC and S11 depending on the
frequency are represented. The calculation of active and reactive components of
the input impedance of antennas was carried out with using the two-link
Chebyshev bandpass filter and the L-shaped circuit for output resistance of the
filter matching to the 50-ohm line.
The graphs, based on the
calculations performed, of the dependence of the antenna bandwidth on the
degree of shortening for a shortened symmetrical dipole antenna and for a
magnetic antenna are represented. Calculations of the matching circuits with
using the Chebyshev bandpass filter were carried out and comparison with the
L-shaped circuit was made.
Conclusions:
- matching of the shortened dipol antenna,
with the degree of shortening η = 2, using Chebyshev two-link bandpass
filter allows to increase antenna bandwith as much as 2,5 times as compared to matching
using of the L-shaped matching circuit;
- matching of the magnetic antenna,
with the degree of shortening η = 2, using Chebyshev two-link bandpass
filter allows to increase antenna bandwith as much as 3 times as compared to matching
using of the L-shaped matching circuit.
Keywords: symmetrical
dipol antenna, magnetic antenna, matching circuit.
Ссылка
на статью:
Б. В. Чернышев. Широкополосное
согласование укороченных антенн. Журнал радиоэлектроники [электронный журнал].
2017. №7.
Режим доступа: http://jre.cplire.ru/jre/jul17/1/text.pdf