CN105490016A - Broadband directional antenna based on resonant reflector - Google Patents

Abstract

The invention discloses a broadband directional antenna based on a resonant reflector, which is mainly composed of a broadband antenna body layer, a resonant reflector layer and a director layer; the resonant reflector layer is located directly below the broadband antenna body layer; The sensor layer is located directly above the broadband antenna body layer. The broadband antenna body layer includes a body dielectric substrate, a main radiation patch and a metal loading ring attached to the body dielectric substrate. The resonant reflector layer includes a resonant medium substrate and a metal resonant ring attached to the resonant medium substrate. The director layer includes a guide medium substrate and a metal guide ring attached to the guide medium substrate. The present invention has dual advantages because it not only overcomes the high section required for the antenna to load the traditional metal reflector, but also overcomes the large area and narrow frequency band required for the antenna to load the AMC structure.

Description

Broadband Directional Antenna Based on Resonant Reflector

technical field

The invention relates to the field of broadband antennas and directional antennas, in particular to a broadband directional antenna based on a resonant reflector.

Background technique

With the progress of society and technology, wireless communication technology has been developed rapidly, and the bandwidth of signals is also continuously improved. Ultra-Wideband (Ultra-Wideband) antennas, as the core components in broadband communication systems, have also been greatly developed. However, UWB antennas have some general disadvantages, such as having to sacrifice gain in order to increase bandwidth; and the pattern will deteriorate at high frequencies, and so on. These shortcomings seriously affect the communication quality. Moreover, ultra-wideband antennas usually radiate omnidirectionally or bidirectionally. With more and more antennas on modern carrier systems, electromagnetic compatibility is a big problem; in fields that require high confidentiality and high immunity The application value is not great. A simple and economical solution to these deficiencies is to use ultra-wideband antennas with directional radiation.

Directional antennas are generally divided into microstrip antennas, log-periodic antennas, Yagi antennas, parabolic antennas, horn antennas, Vivaldi antennas, and antennas using metal reflectors. The above antennas all have high directivity, but unfortunately, they all have their own shortcomings: the microstrip antenna can achieve good directivity because the metal layer is covered on the other side of the dielectric substrate as the floor, but the metal layer The existence of the microstrip antenna leads to a very narrow impedance bandwidth, usually only about 5%; the Yagi antenna usually has a forward gain of more than 10dBi, but its inherent narrow frequency band and end-fire characteristics limit its application range; logarithmic period Antennas and Vivaldi antennas are frequency-invariant antennas. They have a wide impedance bandwidth and can maintain relatively stable directivity throughout the passband. However, their large size and end-fire characteristics make them suitable for portable applications. There is no advantage at all; parabolic and horn antennas are also limited in application due to their relatively large size. The directional antenna using the metal reflector uses a metal conductor (which can be equivalent to an ideal conductor, Perfect Electric Conductor, PEC) as the reflector on the broadband antenna. According to the boundary conditions of the PEC surface, the tangential component of the electric field is zero, so the reflected wave will produce a phase difference of 180°. Therefore, it is necessary to ensure that the distance between the antenna and the metal reflector is a quarter wavelength, so that the reflected wave and the direct wave can be superimposed in the same phase in the far field. The requirement that the distance between the antenna and the metal reflector is a quarter wavelength makes the antenna very thick in low-frequency applications, and the bandwidth of the antenna is not wide; in addition, in order to obtain a better size of the directional reflector also requires Larger, not conducive to miniaturization. Moreover, except for the microstrip antenna, none of the other antennas mentioned above belong to the low-profile structure.

In recent years, with the development of electromagnetic metamaterials, a class of directional antennas using artificial magnetic conductors (Artificial Magnetic Conductor, AMC) as reflective surfaces has emerged. AMC is an artificial electromagnetic material that periodically arranges strong resonant structures to simulate the characteristics of an ideal magnetic conductor (Perfect Magnetic Conductor, PMC), so that zero-phase reflection can be achieved at a specific frequency. Due to the zero-phase reflection characteristic of AMC, if the metal conductor reflective surface is replaced with AMC, the distance between the antenna and AMC can be infinitely close in theory, so a directional antenna with a low profile can be realized. Moreover, some AMC structures, such as the mushroom-shaped electromagnetic band-gap (EBG) structure proposed by American scholar D. Sievenpiper in 1999, have the same zero-reflection phase frequency band as the high-impedance band-gap frequency band, so it is used as The reflective surface also has the characteristics of suppressing surface waves and improving side lobes and back lobes. However, the AMC surface also has its disadvantages. First, the frequency band of this surface is very narrow, and it is difficult to obtain broadband characteristics, let alone ultra-wideband; second, the AMC surface is a periodic structure, which requires multiple cycles to achieve good functions. Third, the distance between the AMC structure and the antenna is very close, and the coupling between the two is very strong, which makes the design and optimization efficiency of the antenna low.

At present, domestic research on broadband directional antennas is mostly Yagi antennas, parabolic antennas, horn antennas, and antennas using metal reflectors. For example, the Chinese invention patent application with the notification number CN103825091A discloses "ultra-wideband directional antenna"; the Chinese invention patent application with the notification number CN102544721A discloses "a flat-printed broadband directional antenna"; the Chinese invention patent application with the notification number CN102738572A discloses The "Broadband Directional Microstrip Patch Antenna" and the "Broadband High Efficiency Indoor Directional Antenna" disclosed in the Chinese invention patent application with the notification number CN101752669A. Although the above-mentioned studies have produced a certain degree of orientation through certain methods, their front-to-back ratios are not particularly high, and all these methods are slightly complicated in design. This increases the design cost and is not applicable in some occasions. Also, these patents cannot meet the requirements of low-profile and miniaturized antennas.

Contents of the invention

What the present invention aims to solve is that the traditional metal reflector for antenna loading requires a higher section and the AMC structure for antenna loading requires a larger area and narrower frequency band, and provides a broadband directional antenna based on a resonant reflector.

In order to solve the above problems, the present invention is achieved through the following technical solutions:

A broadband directional antenna based on a resonant reflector, mainly composed of a broadband antenna body layer, a resonant reflector layer and a director layer; the resonant reflector layer is located directly below the broadband antenna body layer; the director layer is located Just above the broadband antenna body layer. The above-mentioned broadband antenna body layer includes a body dielectric substrate, a main radiation patch and a metal loading ring; the main radiation patch and the metal loading ring are simultaneously attached to the same side surface of the body dielectric substrate, and the metal loading ring is ring-shaped and surrounds the The relative outer side of the main radiation patch; the center of the main radiation patch is provided with a feeding point. The above-mentioned resonant reflector layer includes a resonant medium substrate and a metal resonant ring; the metal resonant ring is ring-shaped and attached to one side surface of the resonant medium substrate. The above-mentioned director layer includes a guide medium substrate and a metal guide ring; the metal guide ring is ring-shaped and covered on one side surface of the guide medium substrate.

In the above scheme, the main radiation patch and the metal loading ring are simultaneously attached to the upper surface of the body dielectric substrate, the metal resonant ring is attached to the lower surface of the resonant dielectric substrate, and the metal guide ring is attached to the upper surface of the leading dielectric substrate. .

In the above scheme, the broadband antenna body layer further includes a microstrip tapered impedance transformer, which is placed vertically below the body dielectric substrate, and the upper end of the microstrip tapered impedance transformer is connected to the main radiation. The feed point of the chip is connected.

In the above solution, the distance between the resonant reflector layer and the broadband antenna body layer is greater than the distance between the director layer and the broadband antenna body layer.

In the above scheme, the distance between the resonant reflector layer and the broadband antenna body layer is 0.07λ～0.11λ, and the distance between the director layer and the broadband antenna body layer is 0.03λ～0.05λ, where λ is the main radiation patch The starting frequency of the working frequency band corresponds to the wavelength.

In the above solution, the centers of the main radiation patch, the metal loading ring, the metal resonating ring and the metal guiding ring are all on the same vertical straight line.

In the above solution, the metal loading ring, the metal resonating ring and the metal guiding ring are all circular.

In the above solution, the main radiation patch is in the shape of a fan-shaped bow tie.

In the above solution, the size of the metal resonant ring matches the size of the metal loading ring, and the size of the metal guide ring matches the size of the main radiation patch.

Compared with prior art, the present invention has following characteristics:

1. By placing a resonant reflector layer under the broadband antenna body layer, the electromagnetic waves of a wider frequency band are reflected back, and superimposed in phase with the direct wave of the antenna body above the antenna, thereby obtaining broadband directional radiation waves.

2. The reflector is a resonant structure with a small size, and only one reflector can achieve good directivity over a wide frequency band, so the antenna structure is compact;

3. The reflection phase at the resonant reflector layer is smaller than 180° of the metal floor reflector, and the distance between the antenna body and the reflector can be much smaller than a quarter wavelength, so the antenna has the characteristics of low profile.

4. The antenna optimization efficiency is high, which saves system resources; it is suitable for broadband, miniaturization and low-profile directional radiation systems.

Description of drawings

Fig. 1 is a front view of a radiation layer of a broadband directional antenna based on a resonant reflector;

Fig. 2 is a kind of front view of the director layer-by-layer of the broadband directional antenna based on the resonant reflector;

Fig. 3 is a front view of a reflector layer of a broadband directional antenna based on a resonant reflector;

4 is an overall side view of a broadband directional antenna based on a resonant reflector;

Fig. 5 is the S11 curve of the antenna;

Fig. 6 is the reflection phase of the resonant reflector layer of the antenna at the antenna body;

Figure 7 is the radiation pattern of the antenna at 2.0GHz;

Figure 8 is the radiation pattern of the antenna at 3.0GHz;

Figure 9 is the radiation pattern of the antenna at 4.2GHz;

Figure 10 shows the variation of antenna front lobe and back lobe with frequency;

Figure 11 shows the variation of the front-to-back ratio of the antenna with frequency;

Labels in the figure: 1, broadband antenna body layer; 1-1 body dielectric substrate; 1-2, main radiation patch; 1-3, metal loading ring; 1-4, microstrip gradient impedance converter; 2, resonant type Reflector layer; 2-1, resonant medium substrate; 2-2, metal resonant ring; 3, director layer; 3-1 guide medium substrate; 3-2, metal guide ring.

detailed description

A broadband directional antenna based on a resonant reflector, as shown in Figure 1-4, the antenna has three layers, from top to bottom are director layer 3, broadband antenna body layer 1 and resonant reflector layer 2 , that is, the resonant reflector layer 2 is located directly below the broadband antenna body layer 1 ; the director layer 3 is located directly above the broadband antenna body layer 1 . In a preferred embodiment of the present invention, the director layer 3, the broadband antenna body layer 1 and the resonant reflector layer 2 are supported by plastic rods. The distance between the resonant reflector layer 2 and the broadband antenna body layer 1 is greater than the distance between the director layer 3 and the broadband antenna body layer 1 . The reflection phase of the resonant reflector layer 2 is less than 180° of the traditional metal reflector (PEC), and is approximately between 90° and 150°. Therefore, the distance between the resonant reflector layer 2 and the antenna can be less than 0.25λ required by the metal reflector (PEC) to obtain a low antenna profile; however, the distance between the resonant reflector layer 2 and the antenna is greater than The required zero distance of AMC thus weakens the coupling between the antenna body and the reflector, improves the design efficiency, and can obtain a wider frequency band; properly select the distance between the resonant reflector layer 2 and the broadband antenna body layer 1 The distance can make the direct wave and the reflected wave superimpose in phase. In this embodiment, the director layer 3 only plays the role of focusing in the present invention, and the distance from the antenna body does not have a great influence on the bandwidth of the antenna. In a preferred embodiment of the present invention, the distance between the resonant reflector layer 2 and the broadband antenna body layer 1 is 0.07λ～0.11λ, and the distance between the director layer 3 and the broadband antenna body layer 1 is 0.03λ～0.05λ , where λ corresponds to the wavelength corresponding to the starting frequency of the operating frequency band of the main radiation patch 1-2.

The broadband antenna body layer 1 includes a body dielectric substrate 1-1, a main radiation patch 1-2, a metal loading ring 1-3 and a microstrip tapered impedance transformer 1-4. The main radiation patch 1-2 is in the form of a broadband patch to obtain broadband characteristics. The metal loading rings 1-3 are used to further improve the impedance characteristics and at the same time greatly improve the radiation characteristics of the antenna. Both the main radiation patch 1-2 and the metal loading ring 1-3 are attached to the upper surface of the body dielectric substrate 1-1, and the metal loading ring 1-3 is ring-shaped and surrounds the main radiation patch 1-2. Relatively outside. The center of the main radiation patch 1-2 is provided with a feeding point. The microstrip gradually changing impedance converter 1-4 is placed vertically below the body dielectric substrate 1-1, and the upper end of the microstrip gradually changing impedance converter 1-4 is connected to the feed point of the main radiation patch 1-2, and the microstrip gradually changing The lower ends of the impedance converters 1-4 can be vertically suspended between the broadband antenna body layer 1 and the resonant reflector layer 2, or can pass through holes opened on the resonant reflector layer 2 vertically. In a preferred embodiment of the present invention, the main radiation patch 1-2 is located in the middle of the body dielectric substrate 1-1, the outer boundary of the metal loading ring 1-3 coincides with the edge of the body dielectric substrate 1-1, and the main radiation patch 1 -2. The metal loading ring 1-3 and the body dielectric substrate 1-1 are in the same center. The present invention is not strictly limited to the structure of the main radiation patch 1-2, which can be the existing radiation antenna structure in the prior art with the feed point at its center, such as an Archimedes spiral antenna, a circular Shaped patches, elliptical patches, triangular patches, trapezoidal patches, or their deformations, but must be symmetrical structures. In a preferred embodiment of the present invention, the main radiation patch 1-2 is in the form of a fan-shaped bow tie, so that the antenna has better impedance characteristics. The main radiation patch 1-2 is composed of two fan-shaped metal patches arranged oppositely, and the centers of the two fan-shaped metal patches are opposite to form a feed point. The main radiation patch 1-2 adopts a fan-like bow-tie shape, and its fan-shaped radius r ₀ determines the low-frequency cutoff frequency of the broadband antenna. However, the general fan-shaped bow-tie antenna has a fatal shortcoming, that is, the reverse current on the patch will split the pattern at high frequencies. In the present invention, the shape of the metal loading ring 1-3 can be square, flower-shaped, or other ring structures symmetrical about the center, but in the preferred embodiment of the present invention, the metal loading ring 1-3 is circular. By loading a circle of metal loading ring 1-3 on the outside of the main radiation patch 1-2, the metal loading ring 1-3 is equivalent to two half-wave oscillators, and the metal loading ring 1-3 corresponds to low-frequency radiation, The main radiation patch 1-2 radiates a higher frequency to obtain a more consistent current in the entire frequency band, thereby improving the radiation characteristics of the entire antenna, and at the same time significantly improving its impedance characteristics. The microstrip tapered impedance transformers 1-4 are used to feed power to the broadband antenna body layer 1 . The microstrip tapered impedance converters 1-4 are 75Ω-50Ω microstrip line tapered balanced-unbalanced converters, namely microstrip tapered baluns, to transform the antenna impedance from 75Ω to 50Ω. The microstrip gradually changing impedance transformer 1-4 adopts the existing structure of the prior art. Since the technology of the microstrip gradually changing impedance transformer 1-4 used for impedance transformation and balanced to unbalanced transformation is mature, it will not be discussed too much here. .

The above-mentioned resonant reflector layer 2 includes a resonant medium substrate 2-1 and a metal resonant ring 2-2. The metal resonant ring 2-2 is annular and attached to the lower surface of the resonant medium substrate 2-1. In a preferred embodiment of the present invention, the resonant medium substrate 2-1 and the metal resonant ring 2-2 have the same center, and the outer boundary of the metal resonant ring 2-2 coincides with the edge of the resonant medium substrate 2-1. In the present invention, the shape of the metal resonant ring 2-2 can be square, flower-shaped, or other ring structures symmetrical about the center, but in a preferred embodiment of the present invention, the metal resonant ring 2-2 is circular. The role of the metal resonant ring 2-2 is to reflect back a section of wide-spectrum electromagnetic waves with a low-frequency cut-off wavelength approximately equal to its circumference with a certain reflection phase, and add a certain distance between the resonant reflector layer 2 and the broadband antenna body layer 1. The distance is small, and the space phase compensation introduced makes the reflected wave and the direct wave of the antenna body superimposed in the same phase in the far field of the upper half space, forming stronger radiation; in this way, the bidirectional or omnidirectional radiation electromagnetic wave of the broadband antenna body layer 1 is transformed into is a directional radiation wave. In addition, the resonant reflector layer 2 of the present invention only needs one resonator, and its size is much smaller than the artificial magnetic conductor (Artificial Magnetic Conductor, AMC) that needs a periodic structure, so it has double advantages.

The director layer 3 includes a guide dielectric substrate 3-1 and a metal guide ring 3-2. The metal guide ring 3-2 is ring-shaped, and is attached to the upper surface of the guide dielectric substrate 3-1. In a preferred embodiment of the present invention, the guide dielectric substrate 3-1 and the metal guide ring 3-2 are concentric, and the outer boundary of the metal guide ring 3-2 is smaller than the edge of the guide dielectric substrate 3-1. The shape of the metal guide ring 3-2 can be square, flower-shaped, or other ring structures symmetrical about the center, but in a preferred embodiment of the present invention, the metal guide ring 3-2 is circular. The metal guide ring 3-2 can be used to focus the electromagnetic wave at high frequency, that is, to guide the electromagnetic wave at the high end of the passband frequency to the main radiation direction of the antenna to improve the front-to-back ratio at high frequency, and to increase the directivity of the antenna , and let the forward lobe angle decrease to a certain extent, which improves the gain,

The present invention has little effect on the antenna on which side of each dielectric substrate the main radiation patch 1-2, the metal loading ring 1-3, the metal resonator ring 2-2 and the metal guide ring 3-2 are printed on. The preferred embodiment of the present invention is only a preferred solution. In the present invention, the centers of the main radiation patch 1-2, the metal loading ring 1-3, the metal resonant ring 2-2, and the metal guide ring 3-2 are relative or allowed to have a certain deviation in the vertical direction, but in order to To obtain the best performance, the centers of the main radiation patch 1-2, the metal loading ring 1-3, the metal resonant ring 2-2 and the metal guide ring 3-2 are all on the same vertical line, and the vertical The straight line is perpendicular to the body dielectric substrate 1-1, the resonant dielectric substrate 2-1 and the leading dielectric substrate 3-1 at the same time. The size of the metal resonant ring 2-2 matches the size of the metal loading ring 1-3, that is, the central ring diameter of the metal resonant ring 2-2 is equal to the central ring diameter of the metal loading ring 1-3. The size of the metal guide ring 3-2 matches the size of the main radiation patch 1-2, that is, the central ring diameter of the metal guide ring 3-2 is smaller than or equal to the outer diameter of the main radiation patch 1-2.

Combined with the accompanying drawings, the specific data of a broadband directional antenna based on a resonant reflector is now given. The main radiation patch 1-2 is a fan-shaped butterfly shape, and the fan-shaped angle of its two fan-shaped metal patches is 120°, and the fan-shaped radius r ₀ is 20mm, the gap between the two fan-shaped metal patches is 1mm, and the input impedance of the main radiation patch 1-2 is approximately 75Ω. The metal loading ring 1-3 is circular, with a central ring diameter r1 of 25 mm and a ring width w1 of 2 mm. The metal resonant ring 2-2 is circular, and its size is consistent with that of the metal loading ring 1-3. Its central ring diameter r2 is 25 mm, and its ring width w2 is 2 mm. The distance hr between the resonant reflector layer 2 and the broadband antenna body layer 1 and the distance hd between the director layer 3 and the broadband antenna body layer 1 are 12mm and 5mm respectively, where hr is only 0.08λ (λ antenna low-frequency cut-off wavelength), It is much smaller than the 0.25λ required by traditional metal reflectors to achieve isotropic reflection. The body dielectric substrate 1-1, the resonant dielectric substrate 2-1 and the leading dielectric substrate 3-1 are made of the same material and have the same size, and the relative dielectric constant of the dielectric substrate is 2.65.

Figure 5 is the S11 curve of the antenna. It can be seen from the figure that the S11 of the antenna is less than -10dB within 2.0GHz _-- 4.2GHz, and the impedance matching characteristic is good. Figure 6 shows the reflection phase of the resonant reflector layer 2 of the antenna at the antenna body. It can be seen from the figure that the reflection phase is between -90° and +90° in the entire antenna frequency band, which is consistent with the far-field reflected wave and the direct wave. The requirement of in-phase superposition of waves can achieve good in-phase superposition in the far field, and at the same time, the antenna gain is significantly improved. Figure 7, Figure 8, and Figure 9 are the antenna pattern at 2.0GHz, 3.0GHz and 4.2GHz respectively. It can be seen from the figure that the E-plane and H-plane pattern at the three frequency points all show obvious directional radiation characteristics, and the pattern is very stable, and there is no split lobe and main beam deviation at high frequencies. Figure 10 is the change curve of the front lobe and back lobe of the antenna with frequency, and Figure 11 is the change of the front-to-back ratio of the antenna with frequency. It can be seen from the figure that in the entire antenna working frequency band, the front-to-back ratio of the antenna is greater than 4dB, and the highest energy Reaching 10dB, the front-to-back ratio is very stable in the entire working frequency band, which meets the communication requirements in certain specific environments. This broadband directional antenna overcomes the high profile required for the antenna to load the traditional metal reflector, and overcomes the shortcomings of the larger area and narrower frequency band required for the antenna to load the AMC structure. Therefore, the broadband directional antenna has dual Advantage.

Finally, it should be noted that the specific parameters in the embodiments are only for clearly expressing the inventor's invention verification process, and are not used to limit the scope of patent protection of the present invention; although the present invention has been described in detail with reference to the foregoing embodiments Those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the corresponding technical solutions The essence deviates from the scope of the technical solutions of the various embodiments of the present invention.

Claims (9)

1. based on the broadband beam antenna of resonant mode reflector, it is characterized in that: form primarily of broad-band antenna body layer (1), resonant mode reflector layer (2) and director layer (3); Resonant mode reflector layer (2) is positioned at immediately below broad-band antenna body layer (1); Director layer (3) is positioned at directly over broad-band antenna body layer (1);

Above-mentioned broad-band antenna body layer (1) comprises bulk medium substrate (1-1), primary radiation paster (1-2) and Metal loading ring (1-3); Primary radiation paster (1-2) and Metal loading ring (1-3) post in surface, the same side of bulk medium substrate (1-1) simultaneously, and Metal loading ring (1-3) in the form of a ring, and be looped around the opposite exterior lateral sides of primary radiation paster (1-2); The center of primary radiation paster (1-2) is provided with distributing point;

Above-mentioned resonant mode reflector layer (2) comprises resonator, dielectric substrate (2-1) and metal resonant ring (2-2); Metal resonant ring (2-2) in the form of a ring, and posts the side surface in resonator, dielectric substrate (2-1);

Above-mentioned director layer (3) comprises guides medium substrate (3-1) into and metal guides ring (3-2) into; Metal guides ring (3-2) in the form of a ring, and posts the side surface in guiding medium substrate (3-1) into.

2. according to claim 1 based on the broadband beam antenna of resonant mode reflector, it is characterized in that: primary radiation paster (1-2) and Metal loading ring (1-3) post the upper surface in bulk medium substrate (1-1) simultaneously, metal resonant ring (2-2) posts the lower surface in resonator, dielectric substrate (2-1), and metal is guided ring (3-2) into and posted upper surface in guiding medium substrate (3-1) into.

3. according to claim 1 based on the broadband beam antenna of resonant mode reflector, it is characterized in that: described broad-band antenna body layer (1) also comprises a micro-band gradual change impedance transformer (1-4) further, this micro-band gradual change impedance transformer (1-4) is vertically placed in the below of bulk medium substrate (1-1), and the upper end of micro-band gradual change impedance transformer (1-4) is connected with the distributing point of primary radiation paster (1-2).

4. according to claim 1 based on the broadband beam antenna of resonant mode reflector, it is characterized in that: the distance between resonant mode reflector layer (2) and broad-band antenna body layer (1) is greater than the distance between director layer (3) and broad-band antenna body layer (1).

5. according to claim 1 or 4 based on the broadband beam antenna of resonant mode reflector, it is characterized in that: the distance between resonant mode reflector layer (2) and broad-band antenna body layer (1) is 0.07 λ ~ 0.11 λ, director layer (3) is 0.03 λ ~ 0.05 λ with the distance of broad-band antenna body layer (1), and wherein λ is the working band initial frequency corresponding wavelength of primary radiation paster (1-2).

6. according to claim 1 based on the broadband beam antenna of resonant mode reflector, it is characterized in that: described primary radiation paster (1-2), Metal loading ring (1-3), metal resonant ring (2-2) and metal guide the center of ring (3-2) into all in same vertical line, its this vertical line is simultaneously vertical with guiding medium substrate (3-1) into bulk medium substrate (1-1), resonator, dielectric substrate (2-1).

7. according to claim 1 based on the broadband beam antenna of resonant mode reflector, it is characterized in that: described Metal loading ring (1-3), metal resonant ring (2-2) and metal are guided ring (3-2) into and be circular.

8. according to claim 1 based on the broadband beam antenna of resonant mode reflector, it is characterized in that: described primary radiation paster (1-2) is fan-shaped bow tie.

9. according to claim 1 based on the broadband beam antenna of resonant mode reflector, it is characterized in that: the size of metal resonant ring (2-2) and the size of Metal loading ring (1-3) match, the size of size and primary radiation paster (1-2) that metal guides ring (3-2) into matches.