CN2549599Y - Logarithmic periodic plate oriented antenna - Google Patents

Abstract

The utility model discloses a new logarithmic periodic plate oriented antenna, comprising a logarithmic periodic vibrator. The utility model is characterized in that the logarithmic periodic vibrator is arranged on a metal reflecting plate. As the logarithmic periodic vibrator is arranged on the metal reflecting plate, the utility model has the advantages of the logarithmic periodic antenna and the plate oriented antenna, including simple structure, high efficiency, great control of half-power angle and high front-to-rear ratio. According to test, when the half-power angle of the utility model is 90 DGE, the front-to-rear ratio is more than 30 dB, therefore, a better choice is available in the choosing of signal coverage.

Description

The tabular directional antenna of a kind of novel logarithm period

Technical field:

The utility model relates to a kind of logarithm period directional antenna.

Background technology:

As directional antenna, especially tabular directional antenna, it has simple in structure, gain is high, half-power angle is controlled well, and front and back are than higher characteristics, wherein before and after than being one of the measurement antenna very important index, be directly connected to energy (i.e. gain), form when the sub-district covers whether can disturb other antenna in addition to previous irradiation.

Existing tabular directional antenna, the symmetrical dipole of employing is generally arranged as radiating doublet row battle array, its half-power angle is mainly controlled by base plate width, by the size restrictions half-power angle, its half-power angle can not be taken into account simultaneously with the front and back ratio, when general half-power angle was 65 °, the front and back ratio was 25dB, during 90 ° of half-power angles, before and after than being 23 dB, half-power angle is big more, requires reflecting plate narrow more, and ratio is just more little before and after it.Adopt micro-strip oscillator in addition, or the microband paste oscillator, its other performance has improvement clearly, but its front and back are than all not reaching very high.

Existing logarithm periodic antenna also is to belong to a kind of directional antenna, and its advantage is, frequency bandwidth is very wide, but its gain is low, even size is very big, gain can be high, and be difficult for installing, and the transmitting antenna during the Chang Zuowei test uses.

Summary of the invention:

For addressing the above problem, the purpose of this utility model is to provide a kind of gain higher, and half-power angle is controlled well, and its front and back are than the high a kind of novel tabular directional antenna of logarithm period

For achieving the above object, the utility model has adopted following scheme:

The tabular directional antenna of a kind of novel logarithm period has comprised the logarithm period oscillator, it is characterized in that this logarithm period oscillator is installed on the metallic reflection plate.

Advantage of the present utility model is described below: because the logarithm period oscillator is installed in the metallic reflection plate, make the utility model have the advantage of logarithm periodic antenna and tabular directional antenna simultaneously, as simple in structure, gain is high, and half-power angle is controlled well, compares advantages of higher before and after it, after tested when its half-power angle during at 90 °, before and after ratio＞30dB, make when selecting signal to cover, more than again a kind of better choice.

Description of drawings:

Fig. 1: structural representation of the present utility model;

Fig. 2: the structural representation of logarithm period oscillator;

The A-A cutaway view of Fig. 3: Fig. 2.

As Fig. 1, Fig. 2 and Fig. 3, the tabular directional antenna of a kind of novel logarithm period described in the utility model is made up of metallic reflection plate 1, logarithm period oscillator 2 and feeder cable 3, and wherein logarithm period oscillator 2 has oscillator sheet 4 and oscillator sheet 5 again.

Claims (1)

1. The tabular directional antenna of a kind of novel logarithm period has comprised the logarithm period oscillator, it is characterized in that this logarithm period oscillator is installed on the metallic reflection plate.

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