High-power-capacity dual-band elliptical patch reflective array antenna

Abstract

The invention discloses a high-power-capacity dual-band elliptical patch reflective array antenna, and relates to the technical field of microwave communication. Compared with a traditional high-power-capacity antenna, the antenna adopts elliptical patches, which are different in frequency band size and are arranged in a staggered mode, as radiation patches. The limitation of low aperture utilization rate caused by narrow bandwidth of a traditional high-power-capacity antenna is overcome, the radiation of high-power-capacity microwaves can be realized in double frequency bands, the arrangementof a reflection array is flexible and easy to conform, the limitation of antenna efficiency caused by insertion loss is eliminated, and the efficiency of the antenna is higher. Compared with an existing dual-band patch reflective array antenna, the antenna adopts the elliptical patch antenna units as the radiation units, so field intensity concentration caused by patch slotting and seam protruding deformation structures is avoided. And meanwhile, the radiation patches are buried in the same dielectric layer in the dielectric plate, and the power capacity of the reflective array antenna is improved.

Description

technical field [0001] The invention relates to the technical field of microwave communication, in particular to a high-power-capacity dual-band elliptical patch reflective array antenna. Background technique [0002] The role of the high power capacity microwave antenna is to radiate the energy output by the high power microwave source into free space in a phased manner, and it is a key component of the high power microwave system. With the development and application of high-power microwave technology, high-power-capacity array antennas have been extensively studied. Generally speaking, these studies are mainly devoted to improving the antenna operating frequency [C.-W.Yuan, S.-R.Peng , T.Shu, Z.-Q.Li, and H.Wang,"Designs and Experiments of a Novel RadialLine Slot Antenna for High power Microwave Application,"IEEE Trans.AntennasPropag.,vol.61,no.10,pp. 4940-4946,2013.], Improving antenna power capacity [Y.Liang, J.Zhang, Q.Liu, and X.Li,"High power Dual-Branch Helical Ant...

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Problems solved by technology

Among them, the more representative single-layer dual-frequency antennas are: a slotted double-loop antenna that rotates the inner and outer rings to achieve high and low frequency phase adjustment [T.Smith, U.Gothelf, O.S.Kim, and O.Breinbjerg,"Design, Manufacturing, and Testing of a 20 / 30-GHzDual-Band Circularly Polarized Reflectarray Antenna, "IEEE Antennas WirelessPropag. Lett., vol.12, pp.1480-1483, 2013.], adding a rectangular ring that changes the side length of the rectangle for phase modulation Slotted Rectangular Patch Antenna [Z.Hamzavi-Zarghani and Z.Atlasbaf,"A New BroadBand Single-LayerDual-Band Reflectarray Antenna in X-and Ku-Bands,"IEEE Antennas WirelessPropag.Lett.,vol.14,pp.602 -605,2015.], Adjusting the length of the phase delay line to achieve high and low frequency phase modulation slotted circular patch plus dual phase delay line antenna [R.S.Malfajani and Z.Atlasbaf, "Design and Implementation of a Dual-Band Single Layer Reflectarray in X and K Bands,"IEEE Trans.Antennas Propag.,4425-4431,2014.], these antennas have achieved dual-band directional radiation, but due to the sudden patch structure, it is easy to cause local field concentration, resulting in antenna The low power capacity limits the application of dual-band patch antennas in the microwave field with high power capacity

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