A Broadband Antenna with Half Space Coverage Function

Abstract

The invention discloses a broadband antenna with a half-space coverage function, which comprises a metal base plate, a rectangular parallelepiped dielectric body and an inverted trapezoidal metal plate, the rectangular parallelepiped dielectric body has long sides, wide sides and high sides, and the rectangular parallelepiped dielectric body The body is placed flat on the upper surface of the metal bottom plate, and the short side of the inverted trapezoidal metal plate is vertically inserted into the rectangular parallelepiped dielectric body from above and is separated from the metal bottom plate by a distance g 0 , the inverted trapezoidal metal plate is perpendicular to the long side of the rectangular parallelepiped dielectric body. In the present invention, by combining the dielectric resonant antenna and the monopole antenna, the antenna can meet the half-space coverage of the pattern in a very wide frequency band, and the pattern characteristics of the antenna are basically stable, that is, as the operating frequency of the antenna The change of the antenna pattern characteristic changes little.

Description

technical field [0001] The invention belongs to the field of antenna design, and in particular relates to a broadband antenna combined with a dielectric resonant antenna and a knife-shaped monopole 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 requ...

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] In addition, since the frequency of communication between aircraft is not fixed, it is not enough to meet half-space coverage on a single frequency

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