CN211556133U

CN211556133U - Medium-feed high-gain omnidirectional microstrip array antenna

Info

Publication number: CN211556133U
Application number: CN202020340144.2U
Authority: CN
Inventors: 陈素杰; 金颖; 王勇; 马玉新
Original assignee: SHAANXI TURN ELECTRONIC TECHNOLOGY CO LTD
Current assignee: SHAANXI TURN ELECTRONIC TECHNOLOGY CO LTD
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-09-22
Anticipated expiration: 2030-03-17

Abstract

The utility model discloses a well present high gain qxcomm technology microstrip array antenna, including dielectric substrate, front irradiator, back irradiator and feeder, the feed point has widened the bandwidth when solving the directional skew of in-band beam in the centre of the microstrip is presented to the cluster. The utility model discloses a well present the problem that the directional skew of in-band beam has been solved to the mode, and its beam is directional at the directional horizontal direction of whole frequency channel, can not take place the directional skew of beam, has realized the bandwidth of antenna and has widened.

Description

Medium-feed high-gain omnidirectional microstrip array antenna

Technical Field

The utility model belongs to the technical field of the antenna, a well present high-gain qxcomm technology microstrip array antenna is related to, can be applied to unmanned aerial vehicle communication equipment.

Background

With the rapid development of unmanned aerial vehicles, the unmanned aerial vehicles are widely applied to national defense and civil use; in the aspect of national defense, the unmanned aerial vehicle is used for mapping, information reconnaissance, relay communication and the like; in civilian aspect, unmanned aerial vehicle is used for aviation shooting, commodity circulation express delivery etc.. Generally, an unmanned aerial vehicle establishes a connection with the unmanned aerial vehicle by means of a ground station, the ground station generally adopts a high-gain directional antenna, and the unmanned aerial vehicle adopts an omnidirectional antenna.

In wireless communication, an antenna is an important device for transmitting and receiving electromagnetic waves, and a microstrip antenna has many applications and developments with the advantages of small size, light weight, low cost, easy integration and matching, and is widely used in many fields. Not only need compact structure and the size of antenna limited, still need the antenna gain height, the skew does not take place in the directional frequency band of wave beam, just can guarantee that unmanned aerial vehicle communication effect is far away. In the traditional microstrip series-fed antenna, the low-frequency band beam is downward inclined and the high-frequency band beam is upward tilted due to the fact that the feed point is arranged at the bottom; for another example, chinese patent No. CN201610197088 discloses an omnidirectional microstrip array antenna applied in a wireless lan, which also has the above problem of in-band beam pointing offset.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve the defect that above-mentioned prior art exists, provide a well and present high-gain qxcomm technology microstrip array antenna for solve the problem of the directional skew of current antenna in-band beam.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a medium-feed high-gain omnidirectional microstrip array antenna comprises a dielectric substrate, a front radiator, a back radiator and a feeder line, wherein a feed point is arranged in the middle of a series-feed microstrip, and the bandwidth is widened while the problem of directional deviation of an in-band beam is solved.

Preferably, the front radiator is composed of a first microstrip patch, a second microstrip patch, a third microstrip patch, three microstrip lines with unequal lengths and unequal widths, and a feed connection feed line outer skin hole.

Preferably, the back radiator is composed of a first microstrip patch, a second microstrip patch, a third microstrip patch, three microstrip lines with unequal lengths and unequal widths, and a feed line connection inner core hole.

Compared with the prior art, the utility model, have following advantage:

1. the utility model adopts the feed network combining series connection and parallel connection, and capacitive reactance or inductive reactance is absolutely introduced to counteract the original inductive reactance or capacitive reactance, thereby widening the bandwidth of the antenna; the absolute bandwidth of the utility model is 1GHz, the resonance frequency is 4.7GHz, the relative bandwidth reaches 21.3%, the relative bandwidth of the prior art is only 10%, and the bandwidth broadening of the antenna is realized;

2. the utility model discloses a directional horizontal direction in whole frequency channel of beam is directional, the directional skew of beam can not take place.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural view of the front radiator of the present invention;

fig. 3 is a schematic structural diagram of the middle back radiator of the present invention;

in the figure, 1-a dielectric substrate, 2-a front radiator, 3-a back radiator, 4-a feeder, 21-a first microstrip patch, 22-a second microstrip patch, 23-a third microstrip patch, 24-a feeder connection feeder skin hole, 31-the first microstrip patch, 32-the second microstrip patch, 33-the third microstrip patch, and 34-a feeder connection feeder inner core hole.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

As shown in fig. 1-3, the mid-feed high-gain omnidirectional microstrip array antenna includes a dielectric substrate 1, a front radiator 2, a back radiator 3, and a feed line 4; the feed point of the medium-feed high-gain omnidirectional microstrip array antenna is arranged in the middle of the series-feed microstrip, the problem of in-band beam pointing offset is solved by adopting a medium-feed mode, and the bandwidth is widened while the in-band beam pointing offset is solved.

Specifically, the front radiator 2 is composed of a first microstrip patch 21, a second microstrip patch 22, a third microstrip patch 23, three microstrip lines with different lengths and different widths, and a feed connection feed line outer skin hole 24; three microstrip patches with different sizes improve current distribution, and three microstrip lines with different lengths and widths can adjust impedance matching.

Specifically, the back radiator 3 is composed of a first microstrip patch 31, a second microstrip patch 32, a third microstrip patch 33, three microstrip lines with unequal lengths and unequal widths, and a feed line inner core hole 34; like the front radiator 2, three microstrip patches with different sizes improve current distribution, and three microstrip lines with different lengths and different widths can adjust impedance matching.

It can be understood that the utility model has reasonable design and unique structure, and because the feed network combining series connection and parallel connection is adopted, capacitive reactance or inductive reactance is absolutely introduced to counteract the original inductive reactance or capacitive reactance, thereby widening the bandwidth of the antenna; the absolute bandwidth of the utility model is 1GHz, the resonance frequency is 4.7GHz, the relative bandwidth reaches 21.3%, the relative bandwidth of the prior art is only 10%, and the bandwidth broadening of the antenna is realized; the beam pointing direction of the medium-feed high-gain omnidirectional microstrip array antenna points to the horizontal direction in the whole frequency band, and beam pointing deviation cannot occur.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims

1. The utility model provides a microstrip array antenna of high gain qxcomm technology of well feed, includes dielectric substrate, front radiator, back radiator and feeder, its characterized in that: the feed point is in the middle of the series feed microstrip, so that the bandwidth is widened while the problem of in-band beam pointing offset is solved.

2. The mid-feed high-gain omnidirectional microstrip array antenna of claim 1, wherein: the front radiator is composed of a first microstrip patch, a second microstrip patch, a third microstrip patch, three microstrip lines with unequal lengths and unequal widths and a feed connection feed line outer skin hole.

3. The mid-feed high-gain omnidirectional microstrip array antenna of claim 1, wherein: the back radiator is composed of a first microstrip patch, a second microstrip patch, a third microstrip patch, three microstrip lines with unequal lengths and unequal widths and a feed line connection inner core hole.