A fixing device for a microstrip antenna array

Abstract

The utility model relates to a kind of fixing device of microstrip antenna array, the device is composed of fixed slot, horizontal direction center fastener, vertical direction center fastener, upper edge fastener, lower edge fastener, microstrip antenna array, low noise amplifier, large through-hole, small through-hole and radio frequency connector, after each component is fastened according to predetermined position by screw, four rectangular subarrays can be assembled into a whole sixteen element microstrip antenna array, used as array signal receiving device.The microstrip antenna array of the utility model after assembly is completed, can be used as phased array antenna in front end of array receiver in reflecting surface antenna system in radio astronomy field, receives the microwave radio frequency signal of corresponding wave band, combined with the low noise amplifier and beam synthesis network of array rear stage, continuous beam coverage in large field of view range can be realized, so that the observation efficiency of telescope is greatly improved.

Description

Technical Field

[0001] This utility model relates to a fixing device for a microstrip antenna array, specifically used for assembling the front-end antenna array of a phased array receiver in a reflector telescope system in the field of radio astronomy. Background Technology

[0002] The receiver is the core signal receiving device in a reflector-type radio telescope system. A receiver system with a single feed, combined with a reflector, produces a beam that is too narrow, resulting in low efficiency during sky surveys. Reflector-type radio telescopes can be equipped with multi-beam receivers to improve survey speed.

[0003] An array receiver is a type of multi-beam receiver, differing in that its feed structure is not that of a traditional receiver feed, but rather composed of an array antenna used in phased array receivers. Besides connecting to the amplification, filtering, and frequency conversion units of a traditional receiver, the array's subsequent stages importantly feature a beamforming network. This network can combine several array elements into a single beam, hence the name phased array receiver. Compared to multi-beam receivers, phased array receivers, through their beamforming networks, achieve continuous beam coverage, enabling radio telescopes to achieve a more continuous field of view in the far field. This means that the observed sky area within the field of view is also continuous, effectively solving the problem of discontinuous field of view in traditional multi-beam receivers.

[0004] There are various types of antenna elements used in the front-end array of phased array receivers, such as helical antennas, dipoles, microstrip antennas, Vivaldi antennas, and slot antennas. Due to the low profile and flexibility of microstrip antennas, they were widely used in early phased array prototypes of ASKAP, such as the first version of array MkI (a 5×4 element dual-polarized checkerboard microstrip antenna array) and the second version MkII (an antenna array consisting of 94×2 microstrip patch antennas arranged in a "self-complementary checkerboard" pattern) developed by CSIRO for ASKAP (Australian Square Kilometre Array Pathfinder).

[0005] Considering the advantages of microstrip antenna arrays, such as low cost, ease of fabrication, and light weight, and taking into account the aperture and focal-to-diameter ratio of the reflector antenna to be placed in the phased array receiver front-end array, as well as the required beam scanning angle, microstrip antennas are selected as array elements. This completes the antenna array design at the focal plane position of the reflector antenna. Then, considering the specific shape of the antenna array and the requirements for joint welding and installation, the peripheral design of the antenna array is carried out to assemble it into a complete array signal receiving device. Summary of the Invention

[0006] The purpose of this invention is to provide a fixing device for a microstrip antenna array. This device comprises a fixing slot, a horizontal center fastener, a vertical center fastener, an upper edge fastener, a lower edge fastener, a microstrip antenna array, a low-noise amplifier, a large through-hole, a small through-hole, and an RF connector. After fastening the components to their predetermined positions with screws, four rectangular subarrays can be assembled into a single sixteen-element microstrip antenna array, used as an array signal receiving device. The assembled microstrip antenna array can be used as a phased array antenna at the front end of an array receiver in a reflector antenna system for radio astronomy, receiving microwave RF signals in the corresponding band. Combined with the low-noise amplifier and beamforming network in the subsequent stage of the array, continuous beam coverage over a large field of view can be achieved, significantly improving the observation efficiency of the telescope.

[0007] The present invention discloses a fixing device for a microstrip antenna array, which comprises a first fixing slot (1), a second fixing slot (2), a third fixing slot (3), a fourth fixing slot (4), a fifth fixing slot (5), a sixth fixing slot (6), a seventh fixing slot (7), an eighth fixing slot (8), a horizontal center fastener (9), a vertical center fastener (10), an upper edge fastener (11), a lower edge fastener (12), a microstrip antenna array (13), a low-noise amplifier (14), a large through hole (15), a small through hole (16), and an RF connector (17). 7) Composition: On one side of the microstrip antenna array (13), from top to bottom, the first fixing slot (1), the third fixing slot (3), the fifth fixing slot (5) and the seventh fixing slot (7) are fixed respectively; on the other side, from top to bottom, the second fixing slot (2), the fourth fixing slot (4), the sixth fixing slot (6) and the eighth fixing slot (8) are fixed respectively; the microstrip antenna array (13) is provided with an upper edge fastener (11) at the top and a lower edge fastener (12) at the bottom; and the microstrip antenna array (13) is provided with a horizontal center fastener (9) and a vertical center fastener (10) in the middle part.

[0008] The first fixed slot (1), the second fixed slot (2), the third fixed slot (3), the fourth fixed slot (4), the fifth fixed slot (5), the sixth fixed slot (6), the seventh fixed slot (7), and the eighth fixed slot (8) are respectively installed on both sides of the microstrip antenna array (13) for installing the low-noise amplifier (14) connected to the rear stage of each antenna. The first fixed slot (1), the second fixed slot (2), the third fixed slot (3), the fourth fixed slot (4), the fifth fixed slot (5), the sixth fixed slot (6), the seventh fixed slot (7), and the eighth fixed slot (8) are respectively provided with a large through hole (15) and a small through hole (16). The large through hole (15) is used to pass through the coaxial line of the RF connector (17), and the small through hole (16) is used to pass through the screw to fix the RF connector (17).

[0009] The third fixing slot (3) and the fourth fixing slot (4) on both sides of the microstrip antenna array (13) are used to fix the upper and lower sub-arrays.

[0010] The horizontal center fastener (9) at the horizontal center position of the microstrip antenna array (13) is used to fix the four rectangular subarrays.

[0011] The vertical center fastener (10) at the vertical center position of the microstrip antenna array (13) is used to fix the four rectangular subarrays.

[0012] The upper edge fastener (11) and the lower edge fastener (12) are used to fix the left and right sub-arrays on the upper and lower sides of the microstrip antenna array (13).

[0013] The present invention discloses a fixing device for a microstrip antenna array, used to assemble the feed array at the front end of the phased array receiver in a reflector telescope system in the field of radio astronomy. It replaces the traditional single feed at the focal plane position to receive electromagnetic signals reflected from the radio telescope. In particular, it can achieve simultaneous observation of multiple continuous beams within a large field of view by means of a beamforming network, effectively improving the telescope's observation efficiency and helping researchers to better carry out related radio astronomy observations. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the microstrip antenna array fixing device of this utility model.

[0015] Figure 2 This is a schematic diagram of the fixing slot of this utility model.

[0016] Figure 3 This is a schematic diagram of the fixed slot assembly of the radio frequency connector and low noise amplifier of this utility model.

[0017] Figure 4 This is a front view of the microstrip antenna array of this utility model. Detailed Implementation

[0018] Example

[0019] The present invention discloses a fixing device for a microstrip antenna array, which comprises a first fixing slot 1, a second fixing slot 2, a third fixing slot 3, a fourth fixing slot 4, a fifth fixing slot 5, a sixth fixing slot 6, a seventh fixing slot 7, an eighth fixing slot 8, a horizontal center fastener 9, a vertical center fastener 10, an upper edge fastener 11, a lower edge fastener 12, a microstrip antenna array 13, a low-noise amplifier 14, a large through hole 15, a small through hole 16, and an RF connector 17. The first fixing slot 1, the third fixing slot 3, the fifth fixing slot 5, and the seventh fixing slot 7 are fixed from top to bottom on one side of the microstrip antenna array 13, and the second fixing slot 2, the fourth fixing slot 4, the sixth fixing slot 6, and the eighth fixing slot 8 are fixed from top to bottom on the other side. An upper edge fastener 11 is provided at the top of the microstrip antenna array 13, a lower edge fastener 12 is provided at the bottom, and a horizontal center fastener 9 and a vertical center fastener 10 are provided in the middle part of the microstrip antenna array 13.

[0020] The first fixing slot 1, the second fixing slot 2, the third fixing slot 3, the fourth fixing slot 4, the fifth fixing slot 5, the sixth fixing slot 6, the seventh fixing slot 7, and the eighth fixing slot 8 are respectively installed on both sides of the microstrip antenna array 13 for installing the low-noise amplifier 14 connected to the rear stage of each antenna. The first fixing slot 1, the second fixing slot 2, the third fixing slot 3, the fourth fixing slot 4, the fifth fixing slot 5, the sixth fixing slot 6, the seventh fixing slot 7, and the eighth fixing slot 8 are respectively provided with a large through hole 15 and a small through hole 16. The large through hole 15 is used to pass through the coaxial line of the RF connector 17, and the small through hole 16 is used to pass through the screw to fix the RF connector 17.

[0021] The third fixing slot 3 and the fourth fixing slot 4 fixed on both sides of the microstrip antenna array 13 are used to fix the upper and lower sub-arrays.

[0022] The horizontal center fastener 9 at the horizontal center position of the microstrip antenna array 13 is used to fix the four rectangular subarrays.

[0023] The vertical center fastener 10 at the vertical center position of the microstrip antenna array 13 is used to fix the four rectangular subarrays.

[0024] The upper edge fastener 11 and the lower edge fastener 12 are used to fix the left and right sub-arrays on the upper and lower sides of the microstrip antenna array 13.

[0025] like Figure 1As shown: The fixing device consists of a first fixing slot 1, a second fixing slot 2, a third fixing slot 3, a fourth fixing slot 4, a fifth fixing slot 5, a sixth fixing slot 6, a seventh fixing slot 7, an eighth fixing slot 8, a horizontal center fastener 9, a vertical center fastener 10, an upper edge fastener 11, and a lower edge fastener 12. After the components are fastened with screws in predetermined positions, the four rectangular sub-arrays can be assembled into a whole sixteen-element microstrip antenna array 13, which is used as an array signal receiving device. The third fixing slot 3 and the fourth fixing slot 4 are used to fix the upper and lower sub-arrays on the left and right sides of the microstrip antenna array 13. The horizontal center fastener 9 is used to fix four rectangular sub-arrays at the horizontal center position of the microstrip antenna array 13. The vertical center fastener 10 is used to fix four rectangular subarrays at the vertical center position of the microstrip antenna array 13. The upper edge fastener 11 and the lower edge fastener 12 are used to fix the left and right sub-arrays on the upper and lower sides of the microstrip antenna array 13. like Figure 2 , Figure 3 As shown: The first fixing slot 1, the second fixing slot 2, the third fixing slot 3, the fourth fixing slot 4, the fifth fixing slot 5, the sixth fixing slot 6, the seventh fixing slot 7, and the eighth fixing slot 8 are respectively installed on both sides of the microstrip antenna array 13 for installing the low noise amplifier 14 connected to the rear stage of each antenna. Each fixing slot also has a large through hole 15 for passing through the coaxial line of the RF connector 17 and a small through hole 16 for passing through the screw to fix the RF connector 17. like Figure 4 As shown: The sixteen-element microstrip antenna array 13 is fully assembled.

[0026] The present invention discloses a fixing device for a microstrip antenna array, used to assemble the feed array at the front end of the phased array receiver in a reflector telescope system in the field of radio astronomy. It replaces the traditional single feed at the focal plane position to receive electromagnetic signals reflected from the radio telescope. In particular, it can achieve simultaneous observation of multiple continuous beams within a large field of view by means of a beamforming network, effectively improving the telescope's observation efficiency and helping researchers to better carry out related radio astronomy observations.

Claims

1. A fixing device for a microstrip antenna array, characterized in that... The fixing device consists of a first fixing slot (1), a second fixing slot (2), a third fixing slot (3), a fourth fixing slot (4), a fifth fixing slot (5), a sixth fixing slot (6), a seventh fixing slot (7), an eighth fixing slot (8), a horizontal center fastener (9), a vertical center fastener (10), an upper edge fastener (11), a lower edge fastener (12), a microstrip antenna array (13), a low-noise amplifier (14), a large through-hole (15), a small through-hole (16), and an RF connector (17). One side of the array (13) is fixed with the first fixing slot (1), the third fixing slot (3), the fifth fixing slot (5) and the seventh fixing slot (7) respectively from top to bottom, and the other side is fixed with the second fixing slot (2), the fourth fixing slot (4), the sixth fixing slot (6) and the eighth fixing slot (8) respectively from top to bottom; the microstrip antenna array (13) is provided with an upper edge fastener (11) at the top and a lower edge fastener (12) at the bottom, and a horizontal center fastener (9) and a vertical center fastener (10) are provided in the middle part of the microstrip antenna array (13).

2. The fixing device for a microstrip antenna array according to claim 1, characterized in that... The first fixed slot (1), the second fixed slot (2), the third fixed slot (3), the fourth fixed slot (4), the fifth fixed slot (5), the sixth fixed slot (6), the seventh fixed slot (7), and the eighth fixed slot (8) are respectively installed on both sides of the microstrip antenna array (13) for installing the low-noise amplifier (14) connected to the rear stage of each antenna. The first fixed slot (1), the second fixed slot (2), the third fixed slot (3), the fourth fixed slot (4), the fifth fixed slot (5), the sixth fixed slot (6), the seventh fixed slot (7), and the eighth fixed slot (8) are respectively provided with a large through hole (15) and a small through hole (16). The large through hole (15) is used to pass through the coaxial line of the RF connector (17), and the small through hole (16) is used to pass through the screw to fix the RF connector (17).

3. The fixing device for a microstrip antenna array according to claim 1, characterized in that... The third fixing slot (3) and the fourth fixing slot (4) on both sides of the microstrip antenna array (13) are used to fix the upper and lower sub-arrays.

4. The fixing device for a microstrip antenna array according to claim 1, characterized in that... The horizontal center fastener (9) at the horizontal center position of the microstrip antenna array (13) is used to fix the four rectangular subarrays.

5. The fixing device for a microstrip antenna array according to claim 1, characterized in that... The vertical center fastener (10) at the vertical center position of the microstrip antenna array (13) is used to fix the four rectangular subarrays.

6. The fixing device for a microstrip antenna array according to claim 1, characterized in that... The upper edge fastener (11) and the lower edge fastener (12) are used to fix the left and right sub-arrays on the upper and lower sides of the microstrip antenna array (13).

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