CN201383535Y

CN201383535Y - Rectangular waveguide-substrate integrated waveguide signal conversion and power divider

Info

Publication number: CN201383535Y
Application number: CN200920053905U
Authority: CN
Inventors: 吴荻
Original assignee: HUIZHOU SPEED COMMUNICATION TECHNOLOGY Co Ltd
Current assignee: Huizhou Speed Wireless Technology Co Ltd
Priority date: 2009-04-01
Filing date: 2009-04-01
Publication date: 2010-01-13
Anticipated expiration: 2019-04-01

Abstract

The utility model discloses a rectangular waveguide-substrate integrated waveguide signal conversion and power divider. The conversion and power divider comprises a rectangular waveguide, a substrate integrated waveguide and a dielectric slab arranged between the rectangular waveguide and the substrate integrated waveguide. The substrate integrated waveguide comprises a substrate and metal layers respectively covered on the upper and lower surfaces of the substrate; the dielectric slab comprises a substrate and metal layers respectively covered on the upper and lower surfaces of the substrate; the upper and lower metal layers are provided with windows corresponding to the position and size of the rectangular waveguide opening; a metal patch is retained at the central position of the metal layer at the lower surface; the metal layers are provided with holes used for signal coupling; and a plated through hole array penetrates through the metal layers and the substrate. The conversion and power divider has the advantages of concise structure, easy processing, high power conversion efficiency of the adopted signal coupling method, small loss and beneficial miniaturization design of products.

Description

A kind of rectangular waveguide-substrate integration wave-guide conversion of signals and power divider

Technical field

The utility model relates to a kind of traditional rectangular waveguide to conversion of signals between the substrate integration wave-guide and power divider, and it can be as microwave and millimeter wave planar circuit or the isostructural waveguide feed mode of slot array antenna based on substrate integration wave-guide.

Background technology

Substrate integration wave-guide (Substrate Integrated Waveguide, SIW) be the class waveguiding structure that integrated techniques such as a kind of PCB of utilization, LTCC obtain to replace the traditional rectangular metal waveguide, compare with traditional rectangular metal waveguide, it not only has good propagation characteristic, and this structure is easy to integrated, size, weight and price that its application can reduce the waveguide device of original microwave and millimeter wave widely and be based upon other microwave passive component on the waveguide basis, and strengthened the repeatability and the accuracy of processing.Substrate integrated wave guide structure can be used for designing various high Q value devices, such as filter, T connector, duplexer or the like, also can design slot array antenna on substrate integration wave-guide.

Though the substrate integration wave-guide of the enough miniaturizations of energy replaces traditional rectangular waveguide, the feed structure in the system at former rectangular waveguide place is still the waveguide feed interface.As the substrate integration wave-guide device of planar structure, modal feeding classification is the wedge shape feed microstrip line, but the introducing of microstrip line brings extra loss of signal can for whole wave guide class device system.

In the prior art, the transducer that a kind of rectangular waveguide side joint substrate integration wave-guide is arranged, as shown in Figure 1, it is connected on an end of substrate integration wave-guide 2 with the wave guide wall at the minor face place of open rectangular waveguide 1 mouth of pipe by wedge shape gradual change ground, and the employing microstrip line carries out the transition of electromagnetic signal between the two.Though this transducer has been realized the conversion of conventional waveguide and planar structure, because will making wedge shape, handles wave guide wall, the substrate dielectric waveguide will be stuck between waveguide " flat mouthful ", and is comparatively complicated in its processing; And for a slot antenna array based on substrate integration wave-guide, in order to satisfy the integrally-built symmetry of antenna, feed structure should be arranged on the positive center of the lower floor of antenna structure, rather than at the one end as far as possible.Therefore the invention design has being necessary by the mapped structure of traditional rectangular waveguide to substrate integration wave-guide of good electrical characteristic.

The utility model content

The utility model is intended to solve traditional rectangular waveguide to the conversion of signals between the substrate integration wave-guide and Distributed Power Architecture complexity, problem that difficulty of processing is big, so provide a kind of simple for structure, be easy to processing and conversion of conductive performance good signal and power divider.

For achieving the above object, technical solution adopted in the utility model is:

A kind of rectangular waveguide-substrate integration wave-guide conversion of signals and power divider is provided, comprises rectangular waveguide, dielectric-slab, substrate integration wave-guide; Described substrate integration wave-guide comprises substrate, is covered in the up and down metal level on two surfaces of substrate respectively; Described dielectric-slab comprises substrate and is positioned at the metal level on the upper and lower surface of substrate; Described dielectric-slab is the corresponding rectangular waveguide mouth of pipe of two lip-deep metal levels position, the equal opening of size up and down, and the base lower surface center is provided with metal patch; Described substrate integration wave-guide lower surface metal layer is provided with the hole that is used for signal coupling, and other has the plated-through hole array to run through its upper surface metal level and substrate, realizes and being electrically connected of the metal level of its lower surface by this plated-through hole array.Also be provided with the plated-through hole array that runs through the two on described dielectric-slab upper strata metal covering and the medium substrate, realize and being electrically connected of the metal level of its lower surface that by this plated-through hole array this plated-through hole array is arranged along rectangular aperture edge on the metal level.

Further, described rectangular waveguide is positioned at the side that substrate integration wave-guide is provided with the signal coupling aperture, and the plane at the open port place of rectangular waveguide and substrate integration wave-guide is surperficial parallel.

The hole that is used for the signal coupling that is provided with on the described substrate integration wave-guide lower surface metal layer is a rectangular configuration, is positioned at the metal level center, and the plated-through hole array is parallel to narrow limit, two narrow edges, hole outer rim and arranges.

The center of described rectangular waveguide, metal patch and coupling aperture is all on a straight line perpendicular to substrate integration wave-guide.

Compared with prior art, the utlity model has following advantage:

(1) waveguide is compared with coaxial line with microstrip line as feed structure, has power capacity height, the little advantage of loss, and increasingly mature along with substrate integrated waveguide technology, more and more is tending towards miniaturization based on traditional waveguide device;

(2) described transfer power distributor can directly be placed on the lower floor centre position of device as the feed structure of substrate integration wave-guide device, thereby the feed converter is arranged on when avoiding waveguide feed in the past the electrical loss and the feed asymmetry of circuit or the required feeder line of aerial array one end;

(3) because rectangular waveguide is positioned at the lower floor of substrate integration wave-guide, therefore the feed part can not have influence on the overall construction design of upper strata circuit or antenna, only need between the two, increase a transition zone, just can be coupled to electromagnetic energy in the substrate integration wave-guide, be beneficial to the realization system design;

(4) realized the integrated of traditional rectangular waveguide-substrate integration wave-guide transfer power distributor, because the project organization symmetry, PCB processing technology precision height can be guaranteed merit branch outputs such as signal in addition.

Description of drawings

Fig. 1 is the transformational structure schematic diagram that substrate integration wave-guide is arrived in the traditional rectangular waveguide in the prior art;

Fig. 2 is that the utility model is formed structural representation.

Embodiment

Below in conjunction with drawings and Examples composition of the present utility model and operation principle are described in further detail.

The related structure of the utility model is the transducer of two kinds of waveguiding structures from principle.Substrate integration wave-guide can equivalence become attenuation the traditional rectangular waveguide, this structure is merely able to transmit TE ₁₀The electromagnetic wave of pattern, the upper surface of its direction of an electric field and substrate integration wave-guide is perpendicular.And the open end of traditional rectangular waveguide is as interface, TE of transmission in it ₁₀The electromagnetic direction of an electric field of pattern and the former direction quadrature mutually, therefore, for the conversion that realizes signal between the two must have a middle transitional structure.The utility model intermediary scutum 3 is this transition structure, and former substrate integrated waveguide 2 structures have been done corresponding improvement, realizes the good communication of signal.

With reference to Fig. 2, the utility model comprises from bottom to up rectangular waveguide 1, dielectric-slab 3, the substrate integration wave-guide of arranging 2, and substrate integration wave-guide 2 specifically comprises substrate 21, is covered in the

metal level

22,23 on substrate two surfaces about in the of 21 respectively; Dielectric-slab 3 specifically comprises substrate 31 and is covered in the

metal level

32,33 on substrate 31 upper and lower surfaces.Corresponding rectangular waveguide mouth of pipe position, size etch " window " on the

metal level

32,33, keep a rectangular metal district, just described metal patch 34 during etching in dielectric-slab 3 lower surface centers; Described metal level 22 is provided with the hole 221 that is used for the signal coupling, and other has plated-through hole array 231 to run through metal level 23 and substrate 21.

Among the embodiment, be evenly distributed with plated-through hole array 311 along rectangular aperture edge on the upper surface metal level 32 of dielectric-slab 3, dielectric-slab 3 upper strata metal coverings 32 and Intermediate substrate 31 are run through in this hole, realize dielectric-slab being electrically connected of two metal levels about in the of 3.And the signal coupling aperture 221 on the metal level 23 is a rectangular configuration, is positioned at metal level 23 centers, and plated-through hole array 231 is parallel to narrow limit, 221 liang of narrow edges, hole outer rim and arranges.The center of rectangular waveguide 1, metal patch 34 and coupling aperture 221 is all on a straight line perpendicular to substrate integration wave-guide 2.

Finish the quadrature conversion of direction of an electric field of the electric field wave of same pattern in the utility model by metal patch 34, realized the good coupling efficiency and the impedance matching of waveguide feed structure and upper strata substrate integration wave-guide device by the length and width of regulating metal patch 34, coupling aperture 221.Being metal throuth hole array 311 set on the dielectric-slab 3 in intermediate layer is electrically connected the lower metal face of rectangular waveguide wall and substrate integration wave-guide, its effect is to prevent to transmit next electromagnetic energy to outside space radiation by waveguide, thereby guarantees that signal can loss-freely as far as possible enter substrate integration wave-guide.

In the practical application, it is an integral body that rectangular waveguide 1, dielectric-slab 3, substrate integration wave-guide 2 threes adopt bolt.

Be the utility model preferred embodiment only below, need to prove, do not breaking away under the utility model design or the principal claim scope situation required for protection, to its any minor variations of doing be equal to replacement and all belong to the utility model protection range.

Claims

1, a kind of rectangular waveguide-substrate integration wave-guide conversion of signals and power divider, comprise rectangular waveguide (1), substrate integration wave-guide (2), described substrate integration wave-guide (2) comprises substrate (21), is covered in substrate (21) metal level on two surfaces (22,23) up and down respectively, it is characterized in that: the metal level (23) on the described substrate integration wave-guide (2) is provided with the hole (221) that is used for the signal coupling, and other has plated-through hole array (231) to run through metal level (23) and substrate (21); Be provided with the dielectric-slab (3) that plays a transition role between described rectangular waveguide (1) and the substrate integration wave-guide (2), described dielectric-slab (3) comprises substrate (31) and is covered in the metal level (32,33) on the upper and lower surface of substrate (31), two metal levels (32,33) have the opening that size is complementary in the correspondence position of the rectangular waveguide mouth of pipe, and dielectric-slab (3) lower surface center is provided with metal patch (34); Described dielectric-slab (3) upper strata metal covering (32) and middle dielectric layer (31) are provided with the plated-through hole array (311) that runs through the two.

2, rectangular waveguide according to claim 1-substrate integration wave-guide conversion of signals and power divider, it is characterized in that: rectangular waveguide (1) is positioned at the side that substrate integration wave-guide (2) is provided with the signal coupling aperture, and the plane at the open port place of rectangular waveguide and substrate integration wave-guide is surperficial parallel.

3, rectangular waveguide according to claim 2-substrate integration wave-guide conversion of signals and power divider is characterized in that: described plated-through hole array (311) is gone up the rectangular aperture edge along metal level (32) and is arranged.

4, rectangular waveguide according to claim 3-substrate integration wave-guide conversion of signals and power divider, it is characterized in that: described hole (221) are rectangular configuration, be positioned at metal level (23) center, plated-through hole array (231) is parallel to narrow limit, (221) two narrow edges, hole outer rim and arranges.

5, rectangular waveguide according to claim 4-substrate integration wave-guide conversion of signals and power divider is characterized in that: the center of described rectangular waveguide (1), metal patch (34) and coupling aperture (221) is all on a straight line perpendicular to substrate integration wave-guide (2).

6, rectangular waveguide according to claim 5-substrate integration wave-guide conversion of signals and power divider is characterized in that: it is an integral body that described rectangular waveguide (1), dielectric-slab (3), substrate integration wave-guide (2) three adopt bolt.