A Broadband Vertically Polarized Antenna with Half Space Coverage

Abstract

The invention discloses a broadband vertical polarized antenna with a half-space coverage function. The antenna comprises a metal bottom plate, a disc cone-shaped metal body vertically arranged abovethe metal bottom plate, and a spiral linear metal belt spirally wound on the periphery of the disc cone-shaped metal body; the disc cone-shaped metal body is an inverted truncated cone; the radius ofthe lower circle of the metal body is smaller than that of the upper circle of the metal body; a distance g is reserved between the lower circle and the metal bottom plate; a gap s is formed between the spiral metal belt and the disc cone-shaped metal body; one end of the spiral metal belt is in contact with the metal bottom plate; and the other end of the spiral metal belt spirally extends upwards out of the disc cone-shaped metal body. The gain of the antenna on an upper half plane can be all greater than -3.5 dBi, and therefore, the half-space coverage of the radiation pattern of the antenna can be realized. The antenna provided by the invention has the advantages of small size and strong stability, and can meet installation and use requirements on a fighter plane.

Description

technical field [0001] The invention belongs to the field of antenna design, in particular to a broadband vertically polarized antenna with a half-space coverage function. Background technique [0002] Communication between aircraft is an important requirement in the design of airborne antennas. The azimuth, pitch and roll angles between two aircraft often change greatly, especially for fighter platforms, when doing various tactical maneuvers, the relative position between the two aircraft often changes within a short period of time. Make a huge difference. In this situation, it is very important to ensure the normal communication between the aircraft. If there is a problem with the communication between the aircraft during this period, it may lead to serious consequences. This puts forward very high requirements on the communication antenna between aircrafts, that is, the pattern of the antenna is required to have a large spatial coverage, so as to ensure the normal commu...

AI Technical Summary

Problems solved by technology

But this antenna has poor coverage on the pitch plane of the aircraft, which is a consequence of the characteristics of the antenna itself

After preliminary simulation calculations, with a gain of -3dBi as the standard, the monopole antenna can only cover about 60% of the space angle above the aircraft, and the gain of the antenna is extremely low directly above the aircraft, which is completely unable to meet the needs of the aircraft. normal communication needs

[0004] However, it is not enough to satisfy the half-space coverage of the antenna

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