KR101092846B1 - A series slot array antenna - Google Patents

Abstract

PURPOSE: A serial slot array antenna is provided to generate a linear polarization wave with a fixed angle and to avoid a grating lobe, thereby preventing a phantom phenomenon. CONSTITUTION: An upper plate(601) includes at least one pair of slots which are made of an inductive non-resonant slot and a capacitive non-resonant slot. A lower plate(609) faces the upper plate. The lower plate comprises a jig coupling etching pattern(610). A serial slot array antenna includes a dielectric substrate(606).

Description

Serial slot array antenna {A SERIES SLOT ARRAY ANTENNA}

The present invention relates to a serial slot array antenna, and more particularly, to a serial slot array antenna using substrate integrated waveguide technology (SIW).

In general, a single slot antenna is an antenna in which a thin long space, that is, a slot or a slit, is drilled on the side parallel to the electric plane of a wide metal plate (waveguide) to excite and radiate radio waves therein. , Slot or slit antenna.

Such single slot antennas may use parallel two-wire or coaxial feedlines, and radio waves are radiated from the slots when traversed so as to interfere with the pipe wall current of the waveguide. When feeding on a coaxial feeder, feed at the point that moves slightly from the center to the end to match. It is a magnetic dipole and vertical polarization is radiated in the horizontal slot and horizontal polarization in the vertical slot. Directing characteristics are the same as those of complementary dipoles, which are maximal in the direction perpendicular to the conductor tube, and become unidirectional if a shielding cavity is provided at the rear.

In contrast, a slot array antenna is an antenna that penetrates a half-wave resonant slot obliquely to the side surface parallel to the electric field of the waveguide, arranges it as a slot antenna array, and obtains the required directivity and gain. Feeding is done at the center or at one end of the antenna. It is covered with a radome of the dielectric for water resistance, prevention, salt prevention and strength reinforcement.

In the slot array antenna, when the electromagnetic wave propagates through the waveguide in the TE10 mode, the tube wall current of the waveguide is cut by the slot so that an electric field is generated in the slot to radiate radio waves. In addition, the strength of the electric field is proportional to the inclination angle.

The slotted array antenna is small in size, light in weight, low in wind pressure, easy to balance with respect to the rotation center, and has good electrical characteristics. In addition, the slotted array antenna has fewer side lobes, has high efficiency, and is easy to achieve high gain.

However, in the case of the conventional slotted array antenna, linear polarization having an arbitrary angle cannot be generated, and the purity of the linear polarization is low because the ratio of co-polarization / cross-polarization is low. do.

In addition, the spacing between the radiating slots is wider than the half wavelength in the air, which may result in grating lobes, which intensify the ghost effect, resulting in overlapping of the acquired image signal. There is a problem that occurs.

In addition, there is a problem that it is difficult to form a broadside radiation beam and additional termination impedance is required at the end of the array antenna, and it is difficult to design a slot pair array antenna considering the mutual coupling impedance. Difficulty in controlling slot electric field strength and phase has a problem in that it is difficult to control the main beam and the side lobe.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and in particular, it aims to generate high-purity linear polarization at an arbitrary angle and to avoid grating lobes to improve the directivity and gain of the antenna.

Another object of the present invention is to remedy the disadvantage that the conventional slot array antenna is made of a heavy metal waveguide, which requires a lot of space for system integration.

Another object of the present invention is to provide an antenna which is light in weight and miniaturized by using a substrate integrated waveguide (SIW) technology applicable to a millimeter wave operating frequency band.

Another object of the present invention is to provide an antenna to be used for monopulse radar and synthetic aperture radar (SAR) for target tracking.

In order to achieve the above object, an example of a serial slot array antenna according to the present invention is an inductive load non-resonant slot having a length shorter than the resonant length, and a capacitive load ratio longer than the resonant length. A top plate including a radiator including at least one resonance slot pair; A lower plate having a structure corresponding to the upper plate and further comprising a jig bond etching pattern; And a dielectric substrate inserted between the upper and lower plates to electrically connect the upper and lower plates.

In this case, the inductive non-resonant slot and the capacitive non-resonant slot of the top plate may be arranged periodically and the interval between each slot may be constant.

The dielectric substrate may include a plurality of short-circuit vias and a plurality of side-vias that electrically connect the upper plate and the lower plate.

In addition, the short-circuit vias and the side-vias may be arranged to contain the radiator of the upper plate to be joined.

In addition, the short-circuit vias and the side-array vias may adjust diameters and spacings of the vias so that the internal magnetic field components do not leak and the dielectric loss and the conductor loss are minimized.

Further, the cut-off frequency of the dielectric substrate may be determined by the spacing between the side array vias that determine the width of the dielectric substrate.

And the spacing of the lateral array vias can be adjusted such that the antenna operates in TE10 mode between the cutoff frequency and TE20 mode.

In addition, the short-circuit vias may be located at a half wavelength (λg / 2) separation distance between the last radiation slot of the upper plate and the tube wavelength.

The short array via may be operated by a standing wave array antenna mechanism.

In addition, each of the radiating slots may be positioned at half-wavelength spacings (λg / 2) of the intra-wavelength wavelength inside the dielectric substrate, and may be operated by a standing-wave array antenna mechanism.

The radiator may be arranged such that the inductive load non-resonant slot and the capacitive load non-resonant slot cross each other.

In addition, the upper plate may further include a signal processor etching pattern used for coupling with the lower plate.

According to the invention,

First, a radar antenna design for dual polarization is possible.

Second, it is possible to generate a high degree of linear polarization of any angle, avoid the grating lobe can suppress the phantom phenomenon, it is easy to improve the directivity and gain of the antenna.

Third, it is advantageous in miniaturization, light weight, and low cost than a slotted array antenna having a conventional metal waveguide structure.

Fourth, there is an effect that no additional termination impedance is required as the slotted array antenna of the standing wave type.

Fifthly, it can be applied to antennas used for searchers mounted on guided missiles, synthetic aperture radar (SAR) radar antennas mounted on unmanned aerial vehicles (UAVs), and 45 ° polarized wave millimeter wave antennas used in collision avoidance systems for vehicles. have.

Sixth, the design of a circularly polarized wave (left-turn and priority-turn) generating antenna is easy by combining a dual polarized antenna using the antenna of the present invention and an additional phase shift feeder.

1 is a view illustrating a parallel slot antenna structure in connection with the present invention;
2 is a view illustrating a serial slot array antenna structure having a cross rotation angle in relation to the present invention;
3 is a view illustrating a serial slot array antenna structure having the same rotation angle in relation to the present invention;
4 is a view illustrating a structure of a traveling-wave serial slot array antenna in relation to the present invention;
FIG. 5 is a view illustrating a slot pair serial slot array antenna structure in connection with the present invention; FIG.
6 is a three-dimensional exploded perspective view illustrating to illustrate an example of a cross serial slot array antenna according to the present invention;
7 is a plan view illustrating an example of a radiating part of a cross serial slot array antenna according to the present invention;
FIG. 8 is a diagram illustrating an example of an equivalent circuit of the cross serial slot array antenna illustrated in FIGS. 6 to 7;
9 is a view for explaining the return loss characteristics of the radiation slots shown in FIGS.
10 is a view for explaining the radiation pattern characteristics of the radiation slots shown in FIGS.
FIG. 11 is a view for explaining the distribution characteristic of the electric field size induced in the radiation slots shown in FIGS. 6 to 7;
FIG. 12 is a diagram for explaining the electric field phase distribution characteristic induced in the radiation slot shown in FIGS. 6 to 7; and
13A to 13B are diagrams for explaining another embodiment of a serial slot array antenna structure according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible, even if shown on different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, the following will describe a preferred embodiment of the present invention, but the technical idea of the present invention is not limited thereto and may be variously modified and modified by those skilled in the art.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a serial array slot antenna, and more particularly, to a serial array slot antenna using Substrate Integrated Waveguide (SIW) technology.

Here, in the present specification, for the sake of understanding of the present invention and for the convenience of the applicant, the radar antenna according to the present invention uses millimeter wave as an example. In addition, the millimeter wave radar antenna according to the present invention will be described using a serial slot array antenna as an example. However, the scope of the present invention is not limited to the illustrated serial slot array antenna, and may implement various types of radar antennas, for example, a parallel slot array antenna or a parallel / parallel array antenna, in the same or similar manner. Even in that case, it belongs to belonging to the scope of the present invention in advance.

1 is a view illustrating a parallel slot antenna structure in relation to the present invention.

1 illustrates a slotted array antenna equivalent to a parallel connection as a typical and popularly used waveguide array antenna structure.

Here, all the radiation slots 101 to 104 have a length and an offset corresponding to resonance, and various parallel susceptances depending on the offset distance away from the center of the waveguide.

In addition, each radiation slot is spaced apart by a half wavelength (λ _g / 2) distance of the guide wavelength in the waveguide tube so that the electric field vector induced in each radiation slot has the same phase and has a high purity linear polarization. It can radiate.

However, in the case of the parallel slot antenna structure of FIG. 1, there is a limitation in that linear polarization having an arbitrary angle cannot be generated.

2 is a view illustrating a serial slot array antenna structure having a cross rotation angle in relation to the present invention.

The single radiating slot of FIG. 2 has a length corresponding to resonance and various series resistances depending on the angle of rotation.

Here, each of the radiating slots 201 to 204 is arranged at a half wavelength distance of the guide wavelength in the waveguide tube.

However, in the case of the serial slot array antenna having the cross rotation angle of FIG. 2, not only the electric field vector direction induced in each radiation slot is not uniform, but also the Co-polarization / cross-polarization ratio is lowered, resulting in relatively low purity. Emits a linear polarization of.

3 is a view illustrating a serial slot array antenna structure having the same rotation angle in relation to the present invention.

The single radiating slot of FIG. 3 has a length corresponding to resonance and various series resistances depending on the angle of rotation.

Here, each of the radiation slots 301 to 302 is disposed apart by one wavelength distance of the wavelength in the waveguide tube, and all the radiation slots have the same electric field phase information.

Accordingly, the electric field vector directions induced in each of the radiating slots 301 to 302 are the same to generate high-purity linear polarization.

However, in the single radiating slot of FIG. 3, the spacing between each radiating slot is wider than half wavelength in air, that is, a grating lobe occurs as the distance between each radiating slot increases, resulting in the directivity of the radar antenna. ) And gain may be reduced.

4 is a diagram illustrating a traveling-wave serial slot array antenna structure in relation to the present invention.

The traveling wave serial slot array antenna of FIG. 4 has a structure in which the spacing between radiating slots is not constant and having different spacings.

In addition, the traveling wave array antennas 401 to 404 of FIG. 4 are terminated by the characteristic impedance load of the waveguide at the last slot 404, that is, at the end of the slot array.

However, in the case of the traveling wave slot array antenna of FIG. 4, phases induced in the electric field of each slot are not the same and are used for beam scanning at an arbitrary angle. Therefore, it is difficult to form a broadside radiation beam, and as shown in FIG. 4, an additional termination impedance is required at the end of the array antenna.

FIG. 5 is a diagram illustrating a slot pair serial slot array antenna structure in relation to the present invention.

The radar antenna of FIG. 5 is an antenna structure in which two radiating slots form a pair and are arranged in series.

Here, the radar antenna as shown in Figure 5, the spacing between the radiating slots (501 to 502, 503 to 504) is very narrow, must take into account the mutual coupling impedance (mutual coupling impedance), it is possible to design only through iterative calculation The design is very tricky.

In addition, in the radar antenna of FIG. 5, it is difficult to control the slot electric field strength and phase so that it is difficult to control the main beam and the side lobe.

In this regard, the following describes a radar antenna capable of generating high-purity linear polarization at any angle and avoiding grating lobes to improve the directivity and gain of the antenna in accordance with the present invention.

In addition, the conventional slotted array antenna is made of a heavy metal waveguide, which requires a lot of space for system integration. In the present specification, light weight and miniaturization using a substrate integrated waveguide (SIW) technology applicable to a millimeter wave operating frequency band The radar antenna described above will be described.

Thus, as described above, according to the present invention, it can be used for the manufacture of antennas to be used for monopulse radar and synthetic aperture radar (SAR) for target tracking.

FIG. 6 is a three-dimensional exploded perspective view illustrating an example of a cross serial slot array antenna according to the present invention, and FIG. 7 is a view illustrating an example of a radiator of the cross serial slot array antenna according to the present invention. One floor plan.

An example of a slotted array antenna according to the present invention includes at least one pair of inductive load non-resonant slots having a length shorter than the resonance length, and at least one pair of capacitive load non-resonant slots having a length longer than the resonance length. A top plate comprising a radiator; A lower plate having a structure corresponding to the upper plate and further comprising a jig bond etching pattern; And a dielectric substrate inserted between the upper and lower plates to electrically connect the upper and lower plates. In this case, the inductive non-resonant slot and the capacitive non-resonant slot of the top plate may be arranged periodically and the interval between each slot may be constant. The dielectric substrate may include a plurality of short-circuit vias and a plurality of side-vias that electrically connect the upper plate and the lower plate. In addition, the short-circuit vias and the side-array vias may adjust diameters and spacings of the vias so that the internal magnetic field components do not leak and the dielectric loss and the conductor loss are minimized. Further, the cut-off frequency of the dielectric substrate may be determined by the spacing between the side array vias that determine the width of the dielectric substrate. And the spacing of the lateral array vias can be adjusted such that the antenna operates in TE10 mode between the cutoff frequency and TE20 mode. In addition, the short-circuit vias may be located at a half wavelength (λg / 2) separation distance between the last radiation slot of the upper plate and the tube wavelength. The short array vias and the respective radiating slots may be operated by a standing wave array antenna mechanism. The half-wavelength spacing (λg / 2) of the tube wavelength inside the dielectric substrate may be located and operated by a standing-wave array antenna mechanism.

6 and 7, the cross-serial slot array antenna according to the present invention includes a waveguide transmission line structure in which a top plate 601, a dielectric substrate 606, and a bottom plate 609 are combined, and a dielectric substrate is entirely inserted. to be.

Here, the upper plate 601 includes a radiator including a plurality of radiating slots 602, 603, and 608, and a signal processor etching pattern 604.

The plurality of radiating slots formed on the top plate include an inductive load non-resonant slot 603 having a length shorter than the resonance length, and a capacitive load non-resonant slot 602 having a length longer than the resonance length. .

Further, the inductive non-resonant slot 603 and the capacitive non-resonant slot 602 may be alternately arranged to form a pair 8. Basically, the present invention applies to all serial slot array antenna structures consisting of even radiating slots. In this case, the inductive non-resonant slot 603 and the capacitive non-resonant slot 602, as shown in Figs. 6 to 7, are alternately arranged periodically and the interval is constant.

For example, in accordance with the present invention, the non-resonant cross slots 602, 603 are located at half-wavelength spacings (λ _g / 2) of the intra-wavelength wavelength inside the dielectric waveguide and are operated by a standing-wave array antenna mechanism.

However, it is not necessarily periodic or intervals constant, and the configuration and spacing may vary depending on the length of each spinning slot.

In the case of the cross serial slot array antenna according to the present invention, the top plate includes at least one inductive non-resonant slot 603 and a capacitive non-resonant slot 602. 6 and 7 show an example in which four inductive non-resonant slots 603 and four capacitive non-resonant slots 602 are alternately arranged. However, the number of slots is not limited thereto.

In the above description, the signal processor etching pattern 604 corresponds to the connector coupling part 611 of the lower plate 609, and the upper plate 601 and the lower plate 609 may be coupled to each other.

Referring to FIG. 6, the structure of the lower plate 609 does not have a shape that exactly corresponds to the upper plate 601. For example, in FIG. 6, the upper plate 601 has a rectangular structure in which a plurality of radiating slots are disposed, but the lower plate 609 is a portion in which a jig bonding etching pattern is disposed in addition to the portion corresponding to the upper plate 601. It further has a T-shaped structure as a whole. However, in FIG. 7, only the top plate and the bottom plate are combined, except for the jig bond etching pattern 601.

Next, the dielectric substrate 606 coupled between the upper plate 601 and the lower plate 609 includes a plurality of short-circuit vias 605 and a plurality of side-array vias 607.

Referring to FIG. 7, the short-circuit vias 605 and the side-vias 607 may be disposed together with the outer rim so as to contain a plurality of radiating slots formed in the upper plate 601 therein.

Here, the upper plate 1 and the lower plate 9 are electrically connected to each other by the short-circuit arranged vias 5 and the side-arranged vias 7.

At this time, the short-circuit vias 5 and the side-vias 7 adjust the diameter and spacing of the vias so that the internal magnetic field components do not leak and the dielectric loss and conductor loss are minimized.

The cut-off frequency of the dielectric waveguide transmission line is also determined by the spacing between the side array vias 7 which determine the width of the dielectric waveguide. In addition, the width of the dielectric waveguide is determined by adjusting the distance between the side array vias 7, so that the width may be adjusted so that the radar antenna can operate in the TE10 mode between the cutoff frequency and the TE20 mode.

Short-circuit vias 605 are located at half-wavelength (λ _g / 2) separation distances from the last radiation slot and the intraluminal wavelength and operate by the standing wave array antenna mechanism in the same way as the non-resonant cross slots 602 and 603.

8 shows an equivalent circuit of the cross serial slot array antenna shown in FIGS. 6-7 according to the invention described above.

Referring to Fig. 8, the total input impedance Z _in from left to right is the sum of impedances of each of the radiating slots # 1 to #n, n: even integer. to each of the radiation slots shown in Fig. 7 is due to be connected in series. Z _in

The TE10 mode voltages and currents induced in each of the radiating slots 602 and 603 are defined as Vns and In, respectively, which are important design parameters for designing the beam-width and field distribution of the array antenna. .

The sidelobe level can be adjusted by designing the distribution of the mode voltages of the radiation slots 602 and 603.

The impedance of the radiation slots 602 and 603 may have an active impedance (Zna) characteristic that compensates for the mutual coupling impedance between the array slots.

The sum of the active impedances of the radiating slots 602 and 603 can be matched to be the characteristic impedance of the dielectric waveguide 606.

FIG. 9 illustrates the return loss characteristic of an antenna having an arrangement of eight non-resonant radiation slots as shown in FIGS. 6 to 7 according to one embodiment of the present invention.

9, it can be seen that the matching loss is minimized by matching at the center frequency of 35 GHz.

FIG. 10 illustrates radiation pattern characteristics of an antenna having an arrangement of eight non-resonant radiation slots as shown in FIGS. 6 to 7 according to an embodiment of the present invention.

Referring to FIG. 10, for example, a radiation pattern (solid line in FIG. 10) having a linear polarization of 45 ° may form a main beam in a broadside direction and may have a net gain characteristic of about 13 dBi or more. It can be seen that.

In addition, the side pattern level of the radiation pattern is -12.4 dB, the ratio of co-polariztion / cross-polarization is 18.2 dB, showing a high purity of 45 ° linear polarization characteristics.

In FIG. 11, as shown in FIGS. 6 to 7, distribution characteristics of electric field sizes induced in slots of an antenna having a total array of eight non-resonant radiation slots according to one embodiment of the present invention are illustrated.

Referring to FIG. 11, a full length vector component in a longitudinal direction (solid line of FIG. 11) in which a wave travels in the dielectric waveguide 606 and a transverse direction (dashed line in FIG. 11) in a direction in which the wave travels. The peak characteristic at each point represents the radiation intensity of the electric field induced at the radiation slot.

Referring to the demonstration result shown in FIG. 11, the maximum peak value has a normalized value (1 (V / m)), and the minimum peak value has a value of 0.82 (V / m) indicating a uniform electric field intensity distribution. I can see it.

FIG. 12 illustrates electric field phase distribution characteristics induced in a radiation slot of an antenna having a total array of eight non-resonant radiation slots as shown in FIGS. 6 to 7 according to one embodiment of the present invention.

Referring to FIG. 12, it can be seen that the phase distribution of the electric field induced in the radiating slot exists between the maximum (0 °) and the minimum (-24 °) and exhibits uniform electric field phase distribution characteristics.

13A to 13B are diagrams for explaining another embodiment of a serial slot array antenna structure according to the present invention. Here, even in the case of the same or similar parts as the above description, the above description is used or mutatis mutandis and will not be described in detail herein. Hereinafter, only different parts will be described.

FIG. 13 illustrates a centrally fed serial slot array antenna structure applied to a dielectric-filled metal waveguide, and the radiation waveguide 1310 and the feed waveguide 1320 may be configured to cross each other.

Here, in the case of FIG. 13A, the radiation waveguide 1310 disposed vertically with respect to the feed waveguide 1320 is configured to be symmetrical, whereas in FIG. 13B, the radiation waveguide 1310 has an asymmetric structure.

In addition, the radiation waveguide 1310 includes two (FIG. 13A) to three (FIG. 13B) inductive radiation slots and capacitive radiation slot pairs as described above.

Therefore, the serial slot array antenna according to the present invention can be applied not only to the dielectric waveguide transmission line technology but also to the metal waveguide slot array antenna filled with the dielectric as shown in FIG.

It can be seen that the feed waveguide 1320 and the radiation waveguide 1310 have a structure in which a signal is applied to a coupling slot.

As described above, in the present specification, the radar antenna and its manufacturing method which can be used in the millimeter wave band using the substrate integrated waveguide (SIW) technology according to the present invention have been described.

In the present invention, as described above, the serial slot standing wave array antenna can be designed, and the grating lobe and the accompanying phantom phenomenon can be suppressed. And linear polarization of arbitrary angle can be generated. In addition, double polarization can be generated by alternately arranging the line array antennas arranged at an arbitrary angle (positive or negative), and circular polarization (RHCP or LHCP) by using a hybrid feeder. ) Can also be created.

In addition, according to the present invention, it is arranged in a combination of off-resonant slots connected in series to form any linearly polarized radiation pattern, it is possible to design a radar antenna for dual polarization generation. In addition, through the radar antenna according to the present invention, high-purity linear polarization can be generated and grating lobes can be avoided to improve the directivity and gain of the antenna, as well as the existing metal waveguide structure. Compared with a slotted array antenna, the antenna can be made smaller or lighter, thereby reducing the cost of manufacturing the radar antenna. In addition, the radar antenna according to the present invention is a standing-wave slot array antenna, which does not require an additional termination impedance and requires only a short circuit.

Therefore, the present invention relates to an antenna used in a searcher mounted on a tracking missile, a synthetic aperture radar (SAR) mounted on an unmanned aerial vehicle (UAV), and a 45 ° polarized wave millimeter wave antenna used in an anti-collision system for a vehicle. It can be applied to the millimeter wave antenna of, and can be easily applied to the design of the circularly polarized (left-turn and priority-turn) generating antenna by combining the dual polarized antenna and the additional phase shift feeder.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains various modifications, changes, and substitutions without departing from the essential characteristics of the present invention. It will be possible. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by the embodiments and the accompanying drawings. . The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

601 top plate 602 capacitive spinning slot
603: inductive radiation slot 604: signal processor etching pattern
605: short-circuit array via 606: dielectric substrate
607: Side Array Via 608: Slot Pairs of Cross Length
609: lower plate 610: jig bond etching pattern
611 connector connector

Claims (12)

A top plate including at least one inductive load non-resonant slot having a length shorter than the resonance length and at least one slot pair including a capacitive load non-resonant slot having a length longer than the resonance length;
A lower plate formed to face the upper plate and further comprising a jig bond etching pattern; and
And a dielectric substrate inserted between the upper and lower plates and having a plurality of vias to electrically connect the upper and lower plates. The method of claim 1,
And a pair of slots formed of the inductive non-resonant slot and the capacitive non-resonant slot are periodically disposed on the top plate, and have a constant interval between the inductive non-resonant slot and the capacitive non-resonant slot. The method of claim 2,
The dielectric substrate,
And a plurality of short-circuit array vias and a plurality of side array vias electrically connecting the upper and lower plates. delete The method of claim 3,
The short-circuit vias and the side-vias are
Serial slot array antenna that adjusts the diameter and spacing of vias so that internal electromagnetic components propagating inside the dielectric waveguide are not leaking and dielectric losses and conductor losses are minimized. The method of claim 5,
The cut-off frequency of the dielectric waveguide is
And a serial slot array antenna determined by a distance between side array vias that determine a width of the dielectric substrate. The method of claim 6,
The spacing of the side array vias is
Serial slot array antenna that adjusts width so that the antenna operates in TE10 mode between cutoff frequency and TE20 mode. The method of claim 7, wherein
The short circuit arrangement vias,
A serial slot array antenna positioned at a half wavelength (λg / 2) separation distance between a radiation slot formed closest to the upper plate and an intra-wavelength wavelength; The method of claim 8,
The short circuit arrangement vias,
Serial slot array antenna operated by a standing wave array antenna mechanism. 10. The method of claim 9,
Each of the inductive non-resonant slot and the capacitive non-resonant slot,
A serial slot array antenna positioned at a half-wavelength spacing (λg / 2) of the intra-wavelength wavelength inside the dielectric substrate and operated by a standing-wave array antenna mechanism. The method of claim 10,
The radiator,
And the inductive load non-resonant slot and the capacitive load non-resonant slot intersect each other. The method of claim 11,
The top plate,
And a signal processor etching pattern used for coupling with the lower plate.

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