CN207517839U - A kind of matched coaxial waveguide orthomode coupler of truncated cones - Google Patents

Abstract

The utility model discloses a kind of matched coaxial waveguide orthomode couplers of truncated cones, belong to wireless communication technology field.It includes turnsile connector and two groups of power combing/distribution circuit, the impedance matching structure of turnsile connector is the metal frustum cone structure positioned at coaxial waveguide structure inner wire end, metal frustum cone structure is coaxial with coaxial waveguide structure and the top surface diameter of metal frustum cone structure is more than the diameter of coaxial waveguide structure inner wire metal, and the bottom surface of metal frustum cone structure is connected with the bottom surface of four rectangle coupled waveguides.The utility model excellent electrical property, processing is simple, can realize etc. that phases polarization separation, the indexs such as standing wave, isolation, Insertion Loss are excellent in a nearly frequency multiplication, it can use in three frequency community antenna system of the frequency ranges such as L/S/C, C/X/Ku, K/Ka/Q, be a kind of important improvement to the prior art.

Description

A kind of matched coaxial waveguide orthomode coupler of truncated cones

Technical field

The utility model is related to wirelessly communicate, navigate observing and controlling and radio astronomy technical fields, particularly relate to a kind of truncation circle Bore matched coaxial waveguide orthomode coupler.

Background technology

It has generally been used, and with satellite frequency spectrum resource in fields transmit-receive sharings such as navigation observing and controlling, satellite communications Increase, double frequency shared or multifrequency community antenna can realize that an antenna is used in two in the case where only increasing a small amount of cost Even more than frequency range, when especially antenna aperture is larger, this mode can significantly reduce antenna system cost, while reduce soil Usable floor area facilitates the laying of user site.

In addition, the development of the increasingly ripe and coaxial turnsile coupler technologies with electromagnetic simulation software, coaxially The available bandwidth of turnsile coupler coupled waveguide port is more and more wider, it is already possible to meet the bandwidth that two-band uses and want It asks, further, since the coaxial inner conductor of coaxial turnsile coupler is hollow, circular waveguide can be formed and be used for transmission higher frequency range Signal, it is therefore convenient to for construct three frequency share feed system, and it is simple in structure, be not necessary to debug.

But three frequency of the prior art shares feed system and is also asked in broader bandwidth there are electric property is bad etc. Topic.

Utility model content

It in view of this, can the utility model proposes a kind of matched coaxial waveguide orthomode coupler of truncated cones Improve the high-end matching properties of coaxial waveguide orthomode coupler frequency band, so as to extend existing coaxial waveguide orthomode coupler Available bandwidth.

Based on above-mentioned purpose, technical solution provided by the utility model is：

A kind of matched coaxial waveguide orthomode coupler of truncated cones, including turnsile connector, the cross turns Door connector surrounds the equally distributed rectangle of the coaxial waveguide structure including coaxial waveguide structure, impedance matching structure and four There is the cylinder for being used to form circular waveguide to lead to for Coupled Passive Waveguide Structure, the center of the inner wire metal of the coaxial waveguide structure Hole is equipped with one group of power being located at below the turnsile connector between the alternate rectangle Coupled Passive Waveguide Structure of each two and closes Into/distribution circuit, the power combing/distribution circuit include power combing/distributor of three port and two be located at it is same One plane is interior and surrounds the connecting line of rectangle, and the power combing/distributor includes a straight wave guide structure, a coupler Body and two mirror-symmetrical 90 ° of E faces waveguide bend structures, the straight wave guide structure of the power combing/distributor and described ten The port of the coaxial waveguide structure of word revolving door connector towards on the contrary, the straight wave guide structure of the power combing/distributor with it is described The place straight line of the coaxial waveguide structure of turnsile connector is mutually parallel and relative to the center point symmetry of rectangle pipeline, two groups The coupled chamber of power combing/distributor hanging down to the coaxial waveguide structure of turnsile connector in power combing/distribution circuit Directly apart from equal, one rectangle Coupled Passive Waveguide Structure of one end connection of the connecting line, the other end connection power One waveguide bend structure of synthesis/distributor, every connecting line is by the identical straight wave guide structure in three sections and two 90 ° of E faces waveguide bend structure compositions, two groups of power combing/distribution circuit are in 90 ° of difference by axis of the axis of turnsile connector Rotational symmetry relationship, and two groups of power combing/distribution circuit have difference in length so as to make their diameter on tube axial section It is staggered at crossover location to line segments；

The impedance matching structure be positioned at coaxial waveguide structure inner wire end metal frustum cone structure, the round metal Platform structure is coaxial with coaxial waveguide structure and the top surface diameter of metal frustum cone structure is more than coaxial waveguide structure inner wire metal Diameter, the bottom surface of the metal frustum cone structure are connected with the bottom surface of four rectangle coupled waveguides.

Optionally, the narrow side length of waveguide and the narrow side of waveguide in the connecting line in the rectangle Coupled Passive Waveguide Structure Equal length, the width edge length of waveguide is equal to or less than the width of waveguide in the connecting line in the rectangle Coupled Passive Waveguide Structure Edge lengths.

Optionally, the connecting line is the U-shaped corner cut waveguide bend element in E faces.

The beneficial effects of the utility model are can be seen that from narration above to be：

1st, the utility model employs a kind of impedance matching structure of special construction, this impedance in the bottom of coaxial waveguide Mating structure is more than the metal frustum cone structure of coaxial waveguide structure inner wire metal diameter for a kind of top surface diameter, in order to be different from Top surface diameter is equal to the frustum cone structure of coaxial waveguide structure inner wire metal diameter, can this structure be known as truncated cones knot Structure, the frustum cone structure that corresponding top surface diameter is equal to coaxial waveguide structure inner wire metal diameter are then referred to as conical structure（Or not The conical structure of truncation）, substantially, both impedance matching structures are all truncated conical shapes from shape, are differed only in The size of round platform top surface, from this view, " the truncated cones structure " of the utility model are considered as in common round platform knot A kind of impedance matching structure more optimized obtained from truncation again is carried out on the basis of structure.The impedance matching structure of this truncated cones Coaxial waveguide connector front end bandwidth is extended, although this structure can be reduced low frequency bandwidth, compares high frequency region exhibition Wide bandwidth is small, and can be by optimizing other parameter and then the high low side band for the coaxial waveguide orthomode coupler that is widened Width has the characteristics that simple in structure, significant effect.

2nd, the utility model proposes a kind of coaxial turnsile connector wideband structural, echo damage of the structure in frequency band Consumption is less than -15dB, than 50 MHz of existing structure broadening or so, meanwhile, the turnsile coupler standing wave, insertion loss are smaller, Port isolation is good.

3rd, the utility model orthomode coupler can be used for three frequency sharing systems of L/S/C frequency ranges, coaxial waveguide output Band of the rectangular waveguide reflection coefficient of port loss less than -15dB is wider than 1.24 GHz~2.25GHz.

In short, the utility model excellent electrical property, processing is simple, can realize etc. that mutually polarization divides in a nearly frequency multiplication From the indexs such as standing wave, isolation, Insertion Loss are excellent, can use in three frequency common antenna of the frequency ranges such as L/S/C, C/X/Ku, K/Ka/Q System is a kind of important improvement to the prior art.

Description of the drawings

In order to clearly describe this patent, one or more attached drawing is provided below, these attached drawings are intended to this patent Background technology, technical principle and/or certain specific embodiments make aid illustration.It should be noted that these attached drawings can It can not also provide some to provide and have been described and belong to known in those of ordinary skill in the art often at this patent word segment The detail of knowledge；Also, because those of ordinary skill in the art can combine the published word content of this patent completely And/or accompanying drawing content, more attached drawings, therefore these attached drawings below are designed in the case where not paying any creative work Can cover can not also cover all technical solutions that this patent word segment is described.In addition, these attached drawings is specific interior Containing needs the word content with reference to this patent to be determined, when word content and some apparent knot in these attached drawings of this patent When structure is not consistent, needing the narration of common knowledge and this patent other parts with reference to this field, to carry out comprehensive descision be this on earth There are exist to draw mistake in clerical mistake or attached drawing for the word segment of patent.Particularly, the following drawings is the figure of exemplary in nature Piece, it is not intended that imply the protection domain of this patent, those of ordinary skill in the art are by reference to the text disclosed in this patent Word content and/or accompanying drawing content can design more attached drawings in the case where not paying any creative work, these are new Technical solution representated by attached drawing is still within the protection domain of this patent.

Fig. 1 is that a kind of structure of the matched coaxial waveguide orthomode coupler of truncated cones in the utility model embodiment is shown It is intended to；

Fig. 2 is the right view of Fig. 1；

Fig. 3 is the front view of Fig. 1；

Fig. 4 is a kind of emulation mould of the matched coaxial waveguide orthomode coupler of truncated cones in the utility model embodiment Type schematic diagram is the structure of waveguide cavity shown in figure；

Fig. 5 is a kind of sectional view of Fig. 4, and the fill part in Fig. 5 represents waveguide cavity region；

Fig. 6 is one rectangular waveguide of the matched coaxial waveguide orthomode coupler of truncated cones in the utility model embodiment Figure is compared in the standing wave emulation of port.

Specific embodiment

For the ease of understanding of the those skilled in the art to the art of this patent scheme, meanwhile, in order to make the technology of this patent Purpose, technical solution and advantageous effect are clearer, and the protection domain of claims is made fully to be supported, below with tool The form of body case makes the technical solution of this patent further, more detailed description.

As shown in Fig. 1~5, a kind of matched coaxial waveguide orthomode coupler of truncated cones, including coaxial turnsile Connector 1, U-bend waveguide component 1, U-bend waveguide component 23, U-bend waveguide component 34, U-bend waveguide component 45, work( Rate synthesis/distributor 1 and power combing/distributor 27, U-bend waveguide component 1, U-bend waveguide component 23, U-bend Waveguide component 34, U-bend waveguide component 45 are as the connecting tube between turnsile connector and power combing/distributor Road, U-bend waveguide component 1, U-bend waveguide component 23 are connect with power combing/distributor 1, U-bend waveguide component three 4th, U-bend waveguide component 45 is connect with power combing/distributor 27, and two U-bend waveguide components surround a rectangle, and work( The coaxial waveguide structure 1-1 of rate synthesis/distributor and coaxial turnsile coupler 1 is in a manner of mutually staggering relative to rectangle The central point of pipeline is in symmetric relation, and the coupled chamber of power combing/distributor 1 and power combing/distributor 27 is to coaxial The vertical range of turnsile connector 1 is equal.

Specifically, U-bend waveguide component 1, U-bend waveguide component 23, U-bend waveguide component 34, U-bend wave The inner section of guiding element 45 is identical, and corner is 90 ° of E faces waveguide bends, one 2 vertical waveguide section 2-2 of U-bend waveguide component Center to 1 coaxial waveguide structure 1-1 of turnsile connector centre distance and 23 vertical waveguide section 3-2 of U-bend waveguide component Center to power combing/distributor 1 centre distance it is equal, length of waveguide segment 4-1 etc. on U-bend waveguide component 34 In the length of waveguide segment 2-1 on U-bend waveguide component 1,34 times waveguide segment 4-3 length of U-bend waveguide component are equal to U-bend One 2 times waveguide segment 2-3 length of waveguide component, waveguide segment 5-1 length is equal to U-bend waveguide component two on U-bend waveguide component 45 Waveguide segment 3-1 length on 3,45 times waveguide segment 5-3 length of U-bend waveguide component are equal to 23 times waveguide segments of U-bend waveguide component 3-3 length, 34 vertical waveguide section 4-2 centers of U-bend waveguide component to 1 coaxial waveguide structure 1-1 centers of turnsile connector Distance is equal with the distance at U-bend waveguide component 45 vertical waveguide section 5-2 centers to 27 center of power combing/distributor.

In addition, power combing/distributor 1 by input/output straight wave guide structure 6-1, two waveguide bend structure 6-2 and Coupled chamber 6-3 is formed, and power combing/distributor 27 is by input/output straight wave guide structure 7-1, two waveguide bend structure 7-2 And coupled chamber 7-3 is formed, the sectional dimension of input/output straight wave guide structure 6-1 and input/output straight wave guide structure 7-1 With length all same, coupled chamber 6-3 is identical with the structure of coupled chamber 7-3, waveguide bend structure 6-2, waveguide bend structure 7-2 with The sectional dimension of U-bend waveguide component is identical.

The narrow side length of four rectangle Coupled Passive Waveguide Structures is identical with the narrow side length of U-bend waveguide component, and broadside is long Degree is equal to or less than the width edge length of U-bend waveguide component.

Specifically, coaxial waveguide structure inner wire end also has the impedance matching structure 10 in metal frustum cone structure, should Metal frustum cone structure is coaxial with coaxial waveguide structure and the top surface diameter of metal frustum cone structure is more than coaxial waveguide structure inner wire The diameter of metal, the bottom surface of metal frustum cone structure are connected with the bottom surface of four rectangle coupled waveguides.

Fig. 6 is the matched coaxial waveguide orthomode coupler of above-mentioned truncated cones rectangle in 1.2GHz ~ 2.3GHz The standing wave simulation curve figure in two kinds of situations of centrum truncation re-optimization and non-truncation of waveguide port, wherein, dotted line is existing knot Structure does not have the return loss simulation curve of coaxial waveguide one rectangular port of orthomode coupler during truncation, and solid line optimizes for truncation The return loss simulation curve of one rectangular port of coaxial waveguide orthomode coupler rectangle coupler afterwards.Label 1 on curve Optimize the frequency band least significant end when return loss simulation result of the latter rectangular port is -15dB for truncation, the label 2 on curve Optimize the frequency band most significant end when return loss simulation result of the latter rectangular port is -15dB for truncation, the label 3 on curve Frequency band least significant end when return loss simulation result for one rectangular port of existing structure is -15dB, the label 4 on curve are Frequency band most significant end when the return loss simulation result of one rectangular port is -15dB, it is seen that increase the impedance of truncated cones Distribution structure back echo loss -15dB Time Bandwidths increase about 50MHz.

It is to be appreciated that be intended merely to facilitate this field common for the above-mentioned narration for this patent specific embodiment The exemplary description that technical staff understands the technical solution of this patent and enumerates, it is not intended that imply the protection domain of this patent only It is only limited in this few example, those of ordinary skill in the art can make what is fully understood to the art of this patent scheme completely Under the premise of, in the form of not paying any creative work, by taking each example cited by this patent combination technique special Sign replaces some technical characteristics, adds in the modes such as more technical characteristics, obtains more specific embodiments, all these tools Body embodiment is within the covering scope of this patent claim, and therefore, these new specific embodiments are in this patent Protection domain within.

In addition, for the purpose for simplifying narration, this patent may also not enumerate some ordinary specific embodiments, this A little schemes are that those of ordinary skill in the art can expect naturally after the art of this patent scheme is understood, it is clear that this A little schemes should be also included within the protection domain of this patent.

For the purpose for simplifying narration, above-mentioned each specific embodiment may be only up to this for the extent of disclosure of details The degree that field technology personnel can voluntarily make a decision, that is, there is no disclosed technical detail for above-mentioned each specific embodiment, this Field those of ordinary skill completely can be in the case where not paying any creative work, in the abundant of the art of this patent scheme It under prompting, is completed by the disclosed document of textbook, reference book, paper, patent, audio-visual product etc., alternatively, these are thin Section is the content that can voluntarily be maked decision according to actual conditions under being generally understood of those of ordinary skill in the art.As it can be seen that Even if these underground technical details, the open adequacy of the art of this patent scheme will not be impacted.

In short, on the basis of patent specification is combined to the explanation effect of claims protection domain, it is any Fall into the specific embodiment of this patent claim covering scope, within the protection domain of this patent..

Claims (3)

1. a kind of matched coaxial waveguide orthomode coupler of truncated cones, which is characterized in that described including turnsile connector Turnsile connector is uniformly distributed including coaxial waveguide structure, impedance matching structure and four around the coaxial waveguide structure Rectangle Coupled Passive Waveguide Structure, the center of the inner wire metal of the coaxial waveguide structure has the cylinder for being used to form circular waveguide Shape through-hole is equipped with one group of power being located at below the turnsile connector between the alternate rectangle Coupled Passive Waveguide Structure of each two Synthesis/distribution circuit, the power combing/distribution circuit includes power combing/distributor of three port and two are located at Same plane is interior and surrounds the connecting line of rectangle, and the power combing/distributor includes a straight wave guide structure, a coupling Cavity and two mirror-symmetrical 90 ° of E faces waveguide bend structures, the straight wave guide structure of the power combing/distributor with it is described The port of the coaxial waveguide structure of turnsile connector is towards on the contrary, straight wave guide structure and the institute of the power combing/distributor The place straight line for stating the coaxial waveguide structure of turnsile connector is mutually parallel and relative to the center point symmetry of rectangle pipeline, and two The coupled chamber of power combing/distributor is to the coaxial waveguide structure of turnsile connector in group power combing/distribution circuit Vertical range is equal, and one end of the connecting line connects a rectangle Coupled Passive Waveguide Structure, and the other end connects the work( One waveguide bend structure of rate synthesis/distributor, every connecting line is by the identical straight wave guide structure and two in three sections A 90 ° of E faces waveguide bend structure composition, two groups of power combing/distribution circuit are in 90 ° of difference by axis of the axis of turnsile connector Rotational symmetry relationship, and two groups of power combing/distribution circuit on tube axial section have difference in length so as to make theirs Radial tubes section is staggered at crossover location；

The impedance matching structure be positioned at coaxial waveguide structure inner wire end metal frustum cone structure, the metal round platform knot Structure is coaxial with coaxial waveguide structure and the top surface diameter of metal frustum cone structure is more than the diameter of coaxial waveguide structure inner wire metal, The bottom surface of the metal frustum cone structure is connected with the bottom surface of four rectangle coupled waveguides.

2. the matched coaxial waveguide orthomode coupler of truncated cones according to claim 1, which is characterized in that the square The narrow side length of waveguide in shape Coupled Passive Waveguide Structure and the narrow side equal length of waveguide in the connecting line, the rectangle coupling The width edge length of waveguide is equal to or less than the width edge length of waveguide in the connecting line in waveguiding structure.

3. the matched coaxial waveguide orthomode coupler of truncated cones according to claim 1, which is characterized in that the company Road is taken over as the U-shaped corner cut waveguide bend element in E faces.