Yagi leaky wave antenna based on artificial surface plasmon
An artificial surface plasmon and leaky wave antenna technology, which is applied in the direction of leaky waveguide antenna, antenna, antenna grounding switch structure connection, etc., to achieve the effect of improving antenna gain and efficiency
Inactive Publication Date: 2019-08-02
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology
[0004] For traditional leaky wave antennas, the beam direction changes with frequency, but in many applications, such as satellite communications, a fixed beam and high-gain radiation pattern are required, which cannot be achieved by traditional leaky wave antennas
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[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0017] Such as figure 1 As shown, a Yagi leaky-wave antenna based on artificial surface plasmons includes a dielectric substrate 1, an artificial surface plasmon transmission line 2 arranged on the dielectric substrate 1, a transition 3 from two coplanar waveguides to the transmission line and A plurality of metal Yagi patches 4; the top surface of the dielectric substrate 1 has a metal layer 5, the artificial surface plasmon transmission line 2, the coplanar waveguide-to-transmission line transition 3 and the Yagi patch 4 are all on the top surface of the dielectric substrate 1; The artificial surface plasmon transmission line 2 is located between two coplanar waveguide-to-transmission line transitions 3, and its two ends are respectively connected to the two coplanar waveguide-to-transmission line transitions 3; one end of the coplanar waveguide to transmis...
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The invention discloses a Yagi leaky wave antenna based on an artificial surface plasmon. The Yagi leaky wave antenna comprises a dielectric substrate, an artificial surface plasmon transmission line,two coplanar-waveguide-to-transmission-line transitions and multiple metal Yagi patches which are arranged on the dielectric substrate. Multiple rectangular internal grooves are arranged at equal intervals along the center line of the artificial surface plasmon transmission line. Multiple Yagi patches are equidistantly arranged on the same side of the artificial surface plasmon transmission line.The Yagi patches are composed of long patches and short patches which are arranged in parallel. The coupling strength between the Yagi patches and the artificial surface plasmon transmission line canbe adjusted by adjusting the gap size between the Yagi patches and the plasmon transmission line and the matching and radiation characteristics of the antenna can be adjusted. The single-sided metalantenna is used so that single-beam directional side-emitting square radiation with high gain and high efficiency can be realized.
Description
technical field [0001] The invention relates to a leaky-wave antenna, in particular to a Yagi leaky-wave antenna based on artificial surface plasmons. Background technique [0002] The artificial surface plasmon is a special electromagnetic wave mode excited on the surface of a specific periodic structure in the lower frequency band such as the microwave band or the terahertz band. This mode has the characteristics of high lateral confinement ability, short working wavelength, low loss, and convenient conformal transmission, so it has received extensive attention. With the gradual deepening of artificial surface plasmon research, a series of new transmission lines and functional devices based on artificial surface plasmon design have emerged. [0003] Traditional SPP-based leaky-wave antennas do not have reflectors due to the single-layer structure of SPP. Most of the designed antennas are symmetrical dual-beam antennas, and the beam direction is not along the dielectric su...
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IPC IPC(8): H01Q1/38H01Q1/50H01Q19/30H01Q13/20H01Q19/02
CPCH01Q1/38H01Q1/50H01Q13/20H01Q19/02H01Q19/30
Inventor 刘蕾蕾胡杨君江扬斌
Owner NANJING UNIV OF POSTS & TELECOMM