CN210576419U - Transmission array compact range device - Google Patents
Transmission array compact range device Download PDFInfo
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- CN210576419U CN210576419U CN201921171296.8U CN201921171296U CN210576419U CN 210576419 U CN210576419 U CN 210576419U CN 201921171296 U CN201921171296 U CN 201921171296U CN 210576419 U CN210576419 U CN 210576419U
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- transmissive
- compact range
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Abstract
The utility model discloses a transmission array contracts field device. The specific implementation mode of the utility model includes: the transmission array antenna comprises at least one transmission array surface, a plurality of transmission array units are arranged on the surface of a medium substrate of the transmission array surface in an array mode, the focal positions of the at least one transmission array surface are the same, and the central projections of the at least one transmission array surface are overlapped; the feed is placed at the focal position and perpendicularly illuminates the center of the at least one transmitted wavefront. The device synthesizes an expected plane wave quiet zone field in a near-field Fresnel radiation zone of the caliber through the optimization control of the transmission phase of the caliber under the amplitude constraint of the irradiation of the beam fixed feed source. The transmission array compact range device of the embodiment adopts a printed circuit structure, has simple process, is convenient to install and transport, can reduce the manufacturing cost, and is suitable for application scenes meeting low-cost realization.
Description
Technical Field
The utility model relates to a compact range technical field. And more particularly to a transmissive array compact range device.
Background
In order to ensure the working quality of the antenna and other devices, accurate measurement is required. However, the far field of the antenna is often long, especially in the millimeter wave and sub-millimeter wave bands, which may reach several kilometers or even tens of kilometers, making accurate far field measurements difficult to achieve. The compact range device can be used for directly testing various antenna directional patterns indoors, meets the requirements of millimeter wave and submillimeter wave antenna radiation characteristic tests on three aspects of measuring distance, electromagnetic environment and measuring equipment, and plays an important role in the frequency band test. The reflecting surface compact range is the most widely applied class of compact ranges in the conventional microwave band, and is mainly divided into a single-reflecting surface compact range and a double-reflecting surface compact range. The traditional reflector millimeter wave and submillimeter wave compact range system is high in manufacturing cost, high in machining precision requirement and high in manufacturing cost. Compared with the holographic compact range and the reflective array compact range, the holographic compact range and the reflective array compact range have lower processing precision requirements and lower manufacturing cost, but the holographic compact range has large insertion loss, the reflective array compact range needs to be off-axis with a feed source, and both the holographic compact range and the reflective array compact range have to occupy larger space.
Therefore, there is a need to provide a new compact range device.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a transmission array contracts range device to solve at least one in the problem that prior art exists.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an embodiment of the utility model provides a transmission array contracts range device, include: the transmission array antenna comprises at least one transmission array surface, a plurality of transmission array units are arranged on the surface of a medium substrate of the transmission array surface in an array mode, the focal positions of the at least one transmission array surface are the same, and the central projections of the at least one transmission array surface are overlapped; the feed is positioned at the focal position and perpendicularly illuminates the center of the at least one transmitted wavefront.
Optionally, the aperture of the transmissive array antenna is circular or square.
Optionally, the transmissive array antenna includes a plurality of transmissive front planes arranged in a stack.
Optionally, a dielectric layer is disposed between adjacent ones of the transmissive fronts.
Optionally, the dielectric layer is an air layer.
Optionally, the transmissive array antenna is manufactured by using a printed circuit board process.
The utility model has the advantages as follows:
the technical proposal of the utility model can construct an expected plane wave quiet area field with low cost under the controllable condition of short distance of a near field, provides a controllable and vivid plane wave electromagnetic environment for the complete machine physical radio frequency simulation and simulation test of large radio frequency electronic equipment such as a mobile communication base station or a terminal, a radar or a guided missile and the like working under a far field electromagnetic environment,
the utility model discloses a transmission array contracts field device mainly is applied to millimeter wave and submillimeter wave antenna test. The utility model provides a transmission array contracts field device adopts printed circuit structure, simple process, the installation transportation of being convenient for, can reduce manufacturing cost, is suitable for the application scene that satisfies the low-cost realization. In addition, the transmission array compact range device has the advantages of good unit phase coverage, high unit transmissivity, small insertion loss, no need of an off-axis feed source, more compact space and smaller occupied area.
Drawings
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings;
fig. 1 shows a schematic structural diagram of a transmissive array compact range apparatus according to an embodiment of the present invention;
fig. 2 is a schematic diagram of the aperture layout of a transmissive array antenna according to an embodiment of the present invention;
fig. 3 shows a dead zone optimized phase distribution diagram with a feed source center frequency of 28GHz according to an embodiment of the present invention;
fig. 4 shows an amplitude distribution diagram after dead zone optimization with a feed source center frequency of 28GHz according to an embodiment of the present invention;
similar parts in the figures are denoted by the same reference numerals.
Detailed Description
In order to explain the present invention more clearly, the present invention will be further described with reference to the preferred embodiments and the accompanying drawings. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
An embodiment of the utility model provides a transmission array contracts range device, include: the transmission array antenna comprises at least one transmission array surface, a plurality of transmission array units are arranged on the surface of a medium substrate of the transmission array surface in an array mode, the focal positions of the at least one transmission array surface are the same, and the central projections of the at least one transmission array surface are overlapped; the feed is placed at the focal position and perpendicularly illuminates the center of the at least one transmitted wavefront.
The feed source is placed at the focal position of the at least one transmission array surface and is irradiated in a center feed forward mode, preferably, the feed source irradiates the center of the transmission array surface vertically, uniform irradiation on the caliber is ensured as much as possible, namely, spherical waves irradiate all transmission array units approximately vertically. The utility model discloses a transmission array contracts the range device because transmission array antenna does not have the feed and shelters from, has stronger flexibility in the aspect of the design.
The transmission array antenna has the functions of collimating and converting spherical incident waves emitted by the feed source into quasi-plane waves and generating plane wave dead zones in the near-field Fresnel zone so as to meet the plane wave environment required by complete machine object radio frequency simulation test of radio frequency electronic equipment and meet the far field condition requirements of millimeter wave and submillimeter wave tests. The distance from the transmission array antenna to the position where the plane wave dead zone is generated is the Fresnel distance, and the far field condition of the traditional antenna is not met. The transmissive array antenna may be manufactured by using a PCB (printed circuit Board, abbreviated as PCB) process.
When the spherical waves are corrected into plane waves emitted on the axis by the transmission array antenna, aperture phase synthesis is carried out through an alternative projection algorithm under the constraint of fixed irradiation amplitude, the transmission phase of the transmission array unit of the aperture is optimally controlled, and an expected plane wave quiet zone is synthesized in a near-field radiation zone of the aperture. The array arrangement mode of each transmission array unit, namely the phase required to be provided by each transmission array unit, is obtained by carrying out plane wave comprehensive optimization by combining an alternative projection algorithm with a plane wave angular spectrum near field rapid transfer method. The transmission array antenna adjusts the transmission phase of incident waves by reasonably designing the shape and the size of each transmission array unit, so that specific phase distribution is formed on the aperture surface of the array, and the reasonable irradiation of a feed source is matched, so that an expected plane wave quiet zone field is synthesized in a near-field Fresnel radiation zone of an aperture.
In an alternative embodiment, the aperture of the transmissive array antenna is circular or square in shape. Preferably, the aperture of the transmissive array antenna is square.
The utility model discloses a transmission battle array antenna's bore unit possesses multilayer structure and high-efficient broadband transmission characteristic, is not restricted to the shape of specific transmission battle array unit.
In a preferred embodiment, the transmissive array antenna includes a plurality of transmissive wavefronts arranged in a stack. The transmission array antenna is composed of a plurality of transmission array planes. Optionally, a dielectric layer is disposed between adjacent transmissive fronts. Alternatively, the dielectric layer between the transmissive fronts may be an air layer. Multiple layers of transmissive fronts to achieve 360 degree coverage of the transmissive cell transmission phase. The structure of the transmission array antenna adopts a multilayer transmission array, so that the transmission phase range can be improved, and full phase coverage is realized. The shape and size of the transmissive array unit, the dielectric constant of the dielectric substrate, and the thickness of the air layer are related to the ability of the electromagnetic wave to adjust the phase.
The utility model discloses transmission array contracts the feed of range device and transmits the face and can the broadband tuning, and the extension contracts the operating frequency of range device and covers.
The utility model discloses a transmission mirror compact range device can regard as the low-cost alternative scheme of traditional plane of reflection compact range as a novel compact range, satisfies millimeter wave and submillimeter wave test demand. The utility model provides a transmission array reduces range device adopts printed circuit structure, simple process, the installation transportation of being convenient for, can reduce manufacturing cost, satisfies low-cost big batch test demand to can realize that the broad phase place covers, energy efficiency is high, effectively utilizes the space, can constitute the far field electromagnetic environment of ideal under short distance controllable condition.
As shown in fig. 1, the utility model discloses a transmission array contracts field device's structure sketch map, including feed 1 and transmission array antenna 5, transmission array antenna 5 includes four transmission wavefront, 4 surface arrays of medium substrate of transmission wavefront have a plurality of transmission array unit 3 of having arranged, the central projection that the focus position of four transmission wavefront is the same and four transmission wavefront overlaps, feed 1 arranges the center of focus position and four transmission wavefront of vertical irradiation in, medium layer 8 between the transmission wavefront is the air bed, 2 represents the focus of transmission wavefront, feed 1 places on the focus of transmission wavefront, and give a positive feedback to transmission array antenna 5 center and shine, guarantee the even irradiation to the bore as far as possible, spherical wave is approximate to all transmission array unit 3 of vertical irradiation. Fig. 2 is a schematic diagram showing the aperture layout of a transmissive array antenna according to an embodiment of the present invention, where 3 denotes a transmissive array unit, and 4 denotes a dielectric substrate. The transmission array antenna 5 adopts a structure of combining a plurality of layers of transmission array planes so as to realize full phase coverage. In fig. 1, 9 denotes a caliber phase, 10 denotes a caliber amplitude, 11 denotes a deadband phase, and 12 denotes a deadband amplitude.
The feed source 1 and the generated plane wave dead zone 6 are respectively positioned at two sides of the transmission antenna 5, and the distance 7 from the transmission array antenna 5 to the generated plane wave dead zone 6 is the Fresnel distance.
The arrangement mode of the transmission array units 3, namely the phase position required to be provided by the positions of the transmission array units 3 is obtained by optimizing and controlling the transmission phase position of the caliber, and the ideal broadband plane wave quiet zone 6 can be obtained at a short distance by matching with reasonable irradiation of the feed source 1.
Here we choose Ka band feed to excite the vertical illumination transmission array antenna 5, and design the center frequency to be 28 GHz. The transmission array antenna 5 is composed of four layers of transmission array surfaces, the number of the transmission array units 3 is 80x80, the caliber is 400mm, the vertical distance of a plane wave quiet zone is 200mm, and the plane wave quiet zone 6 is generated in a near-field Fresnel zone through the combination of the arrangement and the caliber phase of each transmission array unit 3. The feed source 1 can be a corrugated horn, the beam side lobe level is low, and the phase center is stable.
The phase distribution of the plane wave quiet zone 6 obtained according to the present embodiment is shown in fig. 3, and the amplitude distribution of the plane wave quiet zone 6 is shown in fig. 4.
It should be noted that in the description of the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it is obvious for a person skilled in the art to make other variations or changes based on the above description, and all embodiments cannot be exhaustive here, and all obvious variations or changes that belong to the technical solutions of the present invention are still in the scope of protection of the present invention.
Claims (6)
1. A transmissive array compact range apparatus, comprising:
the transmission array antenna comprises at least one transmission array surface, a plurality of transmission array units are arranged on the surface of a medium substrate of the transmission array surface in an array mode, the focal positions of the at least one transmission array surface are the same, and the central projections of the at least one transmission array surface are overlapped;
the feed is positioned at the focal position and perpendicularly illuminates the center of the at least one transmitted wavefront.
2. The apparatus of claim 1,
the aperture of the transmission array antenna is circular or square.
3. The apparatus of claim 1,
the transmissive array antenna includes a plurality of transmissive front planes arranged in a stack.
4. The apparatus of claim 3,
and a dielectric layer is arranged between the adjacent transmission array surfaces.
5. The apparatus of claim 4,
the medium layer is an air layer.
6. The apparatus of claim 1,
the transmission array antenna is manufactured by adopting a printed circuit board process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921171296.8U CN210576419U (en) | 2019-07-24 | 2019-07-24 | Transmission array compact range device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921171296.8U CN210576419U (en) | 2019-07-24 | 2019-07-24 | Transmission array compact range device |
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| CN210576419U true CN210576419U (en) | 2020-05-19 |
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| CN201921171296.8U Active CN210576419U (en) | 2019-07-24 | 2019-07-24 | Transmission array compact range device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112034266A (en) * | 2020-05-25 | 2020-12-04 | 北京中测国宇科技有限公司 | Millimeter wave multi-feed source compact range testing system |
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2019
- 2019-07-24 CN CN201921171296.8U patent/CN210576419U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112034266A (en) * | 2020-05-25 | 2020-12-04 | 北京中测国宇科技有限公司 | Millimeter wave multi-feed source compact range testing system |
| CN112034266B (en) * | 2020-05-25 | 2023-06-23 | 北京中测国宇科技有限公司 | Millimeter wave multi-feed compact range testing system |
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