SU849345A1

SU849345A1 - Aerial device

Info

Publication number: SU849345A1
Application number: SU792824818A
Authority: SU
Inventors: Анатолий Тимофеевич Гаврилин; Анатолий Иванович Гречихин; Лев Алексеевич Торопов
Original assignee: Горьковский Ордена Трудового Крас-Ного Знамени Научно-Исследователь-Ский Радиофизический Институт
Priority date: 1979-09-28
Filing date: 1979-09-28
Publication date: 1981-07-23

Description

Изобретение относится к радиотехнике и может использоваться в приемных и передающих устройствах стационарных и подвижных радиостанций.The invention relates to radio engineering and can be used in receiving and transmitting devices of stationary and mobile radio stations.

Известно антенное устройство, содержащее вертикальную рамку и расположенный в плоскости рамки вертикальный вибратор, подключенные к сумматору через блоки сопряжения £1^ Однако известное устройство имеет сравнительно невысокую пространственную избирательность.A known antenna device containing a vertical frame and a vertical vibrator located in the plane of the frame is connected to the adder via couplers £ 1 ^. However, the known device has a relatively low spatial selectivity.

Цель изобретения - повышение пространственной избирательностиsThe purpose of the invention is to increase spatial selectivity

Для этого в известное устройство дополнительно введен второй вертикальный вибратор, подключенный к первому через вновь введенный инвертор, .при ₂этом вибраторы размещены симметрично относительно вертикальной оси рамки на расстоянии много меньше рабочей длины волны.To this end, a second vertical vibrator is additionally introduced into the known device, connected to the first through a newly introduced inverter, while ₂ the vibrators are placed symmetrically with respect to the vertical axis of the frame at a distance much shorter than the working wavelength.

На чертеже приведена структурная электрическая схема предлагаемого устройства.The drawing shows a structural electrical diagram of the proposed device.

Антенное устройство содержит вертикальную рамку 1, вертикальные вибраторы 2 и 3, инвертор 4, блоки 5 и 6 сопряжения и сумматор 7.The antenna device contains a vertical frame 1, vertical vibrators 2 and 3, an inverter 4, blocks 5 and 6 of the pair and the adder 7.

Устройство работает следующим образом.The device operates as follows.

При работе на прием в точке приема создается суммарное электромагнитное поле, являющееся суммой поля зоны индукции источника полезного сигнала (на чертеже не показан) и полей волновой зоны множества источников мешающих сигналов, находящихся на различных направлениях. Суммарное поле наводит в вертикальной рамке 1 напря7 женйе сигнала в вертикальном вибраторе 2 - напряжение сигнала ~ АЕ^ и в вертикальном вибратореWhen working at the reception at the receiving point, a total electromagnetic field is created, which is the sum of the fields of the induction zone of the source of the useful signal (not shown in the drawing) and the fields of the wave zone of many sources of interfering signals located in different directions. The total field induces in the vertical frame 1 the voltage of the signal in the vertical vibrator 2 - the signal voltage ~ AE ^ and in the vertical vibrator

- напряжение сигнала Ё^ = АЕ^ , где Н - напряженность магнитной компоненты суммарного поля ц центре верти, 3 849345 кальной рамки 1,С,А- коэффициенты, зависящие от действующих высот вертик-альнои⁴ рамки 1 и вертикальных вибраторов 2 и 3 соответственно,Е^, напряженности электрических компонент суммарного поля вдоль осей вертикальных вибраторов 2 и 3 соответственно. . Инвертор 4 изменяет фазу сигнала ^2. ^на противоположную так, что на вход блока 6 поступает разность сигналов ....is the signal voltage E ^ = AE ^, where H is the magnetic component of the total field and the center of the vertical, 3,849,345 cal frames 1, C, A are the coefficients depending on the effective heights of the vertical ⁴ frames 1 and the vertical vibrators 2 and 3, respectively , E ^, the electric field strength of the total field along the axes of the vertical vibrators 2 and 3, respectively. . Inverter 4 changes the phase of the signal ^ 2. ^{on the} opposite so that the input of block 6 receives the difference of the signals ....

5' . Ч S-i *5' . H S-i *

Сигнал^ от вертикальной рамки 1 через блок 5 и разностный сигнал через блок 6 поступает на сумматор 7, где формируется суммарный выходной сигнал ,&Λδ/ = и ⁺ Ке> ί где Ц_н·, Ць - составляющие выходного сигнала, .обусловленные воздействием полей от источников в зоне индукции и в волновой зоне соответственно:The signal ^ from the vertical frame 1 through block 5 and the difference signal through block 6 is fed to the adder 7, where the total output signal is formed, & Λδ / = and ⁺ Ке> ί where Ts _n , and Ts are the components of the output signal, due to the action of fields from sources in the induction zone and in the wave zone, respectively:

~ коэффициенты передачи блоков 5 и 6 соответственно. .~ transmission coefficients of blocks 5 and 6, respectively. .

Таким образом, диаграмма направленности антенного устройства имеет '· нулевые значения во всех азимутальных направлениях волновой зоны. При работе антенного устройства на передачу при пассивных блоках 5 и 6 и пассивном инверторе 4 справедлив принцип взаимности. Поэтому электромагнитные поля в волновой зоне, обусловленные излучением вертикальной рамки 1 и вертикальных вибраторов 2 и 3, взаимно компенсируются независимо от азимутальных направлений в горизонтальной плоскости. В зоне индукции такой компенсации не будет вследствие того, что в поле индукции вертикальной рамки 1 преобладает магнитная компонента Н , а в поле индукции вертикальных вибраторов 2 и 3 - электрическая компонента Ё.Thus, the radiation pattern of the antenna device has' · zero values in all azimuthal directions of the wave zone. When the antenna device is in transmission with passive blocks 5 and 6 and passive inverter 4, the principle of reciprocity is true. Therefore, the electromagnetic fields in the wave zone due to the radiation of the vertical frame 1 and the vertical vibrators 2 and 3 are mutually compensated regardless of the azimuthal directions in the horizontal plane. In the induction zone, such compensation will not be due to the fact that the magnetic component H prevails in the induction field of the vertical frame 1, and the electric component Ё dominates in the induction field of vertical vibrators 2 and 3.

Предлагаемое антенное устройство обеспечивает пространственную избирательность по дальности и позволяет повысить пространственную избирательность антенного устройства в целом.The proposed antenna device provides spatial selectivity in range and improves spatial selectivity of the antenna device as a whole.

Вследствие того, что блоки 5, и 6 обеспечивают выполнение условияDue to the fact that blocks 5, and 6 ensure that the condition

Ч₅ А ~-~С ь где d - расстояние между вертикальными вибраторами 2 и 3;Ч ₅ А ~ - ~ С b where d is the distance between the vertical vibrators 2 and 3;

Λ - длина волны;Λ is the wavelength;

2_О — волновое сопротивление свободного пространства, составляющая выходного сигнала, обусловленная воздействием полей от всех ис~ 40 точников волновой зоны, равна нулю, а компенсации сигналов от источников в зоне индукции не происходит. В результате на.выходе сумматора 7 напряжение обусловлено только воздействием 45 поля от источника зоны индукции.2 _О - wave resistance of free space, component of the output signal, caused by the action of fields from all ~ 40 sources of the wave zone, is zero, and signal compensation from sources in the induction zone does not occur. As a result, at the output of adder 7, the voltage is caused only by the action of field 45 from the source of the induction zone.

Claims

The invention relates to radio engineering and can be used in receiving and transmitting devices of fixed and mobile radio stations. An antenna device is known, which contains a vertical frame and a vertical vibrator located in the plane of the frame, connected to the adder via interface blocks. However, the known device has a relatively low spatial selectivity. The purpose of the invention is to increase the spatial selectivity of i Dna. In this device, a second vertical vibrator is additionally introduced, connected to the first via a newly introduced inverter, while the vibrators are placed symmetrically relative to the vertical axis of the frame at a distance much longer than the working wavelength. The drawing shows a structural electrical circuit of the proposed device. The antenna device comprises a vertical frame 1, vertical vibrators 2 and 3, an inverter 4, matching blocks 5 and 6, and an adder 7. The device operates as follows. When working at a reception, a total electromagnetic field is created at the reception point, which is the sum of the field of induction of the source of the useful signal (not shown) and the fields of the wave of many sources of interfering signals located in different directions. The total field induces in the vertical frame 1, eg 7 signal 2, :: 6n, in the vertical vibrator 2 - the voltage of the signal 4, GAU, and in the vertical vibrator 3 - the voltage of the signal, -АЕ. where H is the intensity of the magnetic component of the total floor of the center of the vertical, 38 with a tracing frame 1, C, L are coefficients, depend on the effective heights of the vertical height of the floor and 1 and the vertical vibrators 2 and 3, respectively axes of vertical vibrators 2 and 3, respectively. Inverter 4 reverses the phase of signal 2 so that the difference of signals arrives at the input of block 6 .... V4 - Sa Signal / from vertical frame 1 through block 5 and the difference signal through block 6 goes to adder 7, where it is formed total output signal where the components of the output signal, due to the effect of fields from sources in the induction zone and in the wave zone are: transfer coefficients of blocks 5 and 6, respectively. Due to the fact that blocks 5 and 6 ensure that the condition where c (is the distance between the vertical vibrators 2 and 3j is the length of the WAVE} ZQ is the free-space impedance constituting the output signal, due to the effect of fields from all sources of the wave zone, equal to zero, and no compensation of signals from sources in the induction zone occurs. As a result, the voltage on the output of the adder 7 is due only to the effect of the field from the source of the induction zone. Thus, the radiation pattern of the antenna device Zero values in all azimuthal directions of the wave zone. When the antenna device operates on transmission with the passive blocks 5 and 6 and the passive inverter 4. The principle of reciprocity is valid. Therefore, electromagnetic fields in the wave zone caused by the radiation of the vertical frame 1 and vertical vibrators 2 and 3 are mutually compensated regardless of the azimuthal directions in the horizontal plane. In the induction zone, such compensation will not be due to the fact that in the induction field of the vertical frame 1 the component H, and in the field of induction of vertical vibrators 2 and 3, the electrical component of E. The proposed antenna device provides spatial selectivity in range and allows to increase the spatial selectivity of the antenna device as a whole. Claims of the invention Antenna device comprising a vertical frame and a vertical vibrator located in the plane of the frame, connected to an adder via interface blocks, characterized in that, in order to increase spatial selectivity, a second vertical vibrator is additionally connected to the first through a newly introduced inverter The vibrators, however, are arranged symmetrically about the vertical axis of the frame at a distance much shorter than the working wavelength. Sources of information taken into account during the examination 1. Kukes, IS, Old Man, ME Basically you are radio direction finding. M., Sov.radio, 1964, p.109-113 (prototype).