Device for all-around electromagnetic compatibility and high-frequency testing

Abstract

Device for all-around electromagnetic compatibility and high-frequency testing, comprising: an antenna holder (1); an automatic angle adjustment device (2), wherein the automatic angle adjustment device (2) is arranged on the antenna holder (1) and is movable along the antenna holder (1) in a vertical direction, wherein the automatic angle adjustment device (2) comprises the following: a motor (26) configured to move the automatic angle adjustment device (2) along the antenna holder (1) in a vertical direction; an input device (21) for entering a test distance and for setting a reference height of an electronic device to be tested; a distance sensor (22) for measuring and recording the current height of a test antenna; an encoder (23) which is connected to the input device (21) and the distance sensor (22) and is configured to calculate a target angle based on the current height of the test antenna, the test distance and the height of the electronic device under test; a motor driver (24) which is connected to the motor (26) and is configured to control the motor (26) depending on the target angle; and a microcontroller (25) that is connected to and controls the input device (21), the distance sensor (22), the encoder (23) and the motor driver (24); and a test antenna (3) wherein the test antenna (3) is connected to the automatic angle adjustment device (2) and is driven by the motor (26) to be rotated to the calculated target angle.

Description

[0001] The present utility model relates to the field of testing electronic and wireless products, and in particular to a device for all-round electromagnetic compatibility and high-frequency testing.

[0002] With the ever-increasing number and variety of electronic and wireless products, the need for electromagnetic compatibility (EMC) and radio frequency (RF) testing is also growing. To comply with the relevant international standards, EMC and RF measurements must be performed in increasingly shorter cycles and with greater efficiency.

[0003] According to ANSI (American National Standards Institute) specifications, an electronic device under test (EUT) should be positioned within the radiation cone of a test antenna. The test antenna must be aligned in both azimuth and elevation directions so that it points towards the direction of maximum radiation from the EUT. Additionally, appropriate polarization must be used to obtain a maximum measurement signal.

[0004] However, the currently available test equipment still faces numerous challenges in practical application. In particular, with known test equipment, the alignment of the test antenna towards the electronic device under test (EUT) is achieved using a mechanical adjustment mechanism to align the test antenna in the azimuth and elevation directions with the position of the EUT's strongest radiation.Therefore, each individual measurement requires manually adjusting the angular position of the mechanical device to align the test antenna with the electronic equipment under test (EUT), making the test procedure labor-intensive and time-consuming. Furthermore, both the manual adjustment and the existing mechanical limitations result in varying degrees of measurement accuracy, and, combined with the comparatively high costs of acquiring, maintaining, and modifying the existing test equipment, the flexibility in supporting different test conditions is limited, making rapid adaptation to diverse test requirements difficult.Furthermore, current testing procedures are often associated with long measurement times, and due to existing mechanical limitations, the measurement accuracy is also insufficient, further restricting the scope of application and efficiency.

[0005] Furthermore, the current testing method using high-frequency probes still has numerous shortcomings; in view of this, the inventor of this application has set himself the goal of avoiding the aforementioned problems and has consequently developed the device for all-round electromagnetic compatibility and high-frequency testing through intensive research as well as improvements and innovative further development.

[0006] The purpose of the utility model is to avoid the aforementioned shortcomings of the prior art and to provide a device for all-round electromagnetic compatibility and high-frequency testing, with which the alignment of a test antenna in the azimuth and elevation direction relative to an electronic device (EUT) under test can be quickly adjusted and at the same time the measurement accuracy is increased.

[0007] This problem is solved according to the utility model by a device for all-around electromagnetic compatibility and high-frequency testing, which has the features specified in claim 1. Further advantageous embodiments of the utility model are described in the features of the dependent claims.

[0008] According to the utility model, a device for all-around electromagnetic compatibility and high-frequency testing is provided, comprising at least one antenna holder, an automatic angle adjustment device, and a test antenna. The automatic angle adjustment device is mounted on the antenna holder, and the test antenna is arranged on the automatic angle adjustment device.

[0009] According to the utility model, the automatic angle adjustment device comprises a motor, an input device, a distance sensor, an encoder, a motor driver, and a microcontroller. The microcontroller is connected to and controls the input device, the distance sensor, the encoder, and the motor driver. The motor driver is connected to the motor. The input device is used to input a test distance and to set the reference height of the electronic device under test (EUT). The distance sensor measures and records the current height of the test antenna. The encoder is configured to calculate a target angle based on the current height of the test antenna, the test distance, and the height of the electronic device under test.The motor driver is configured to control the motor according to the target angle, rotating the motor to the target angle. The motor is configured to move the automatic angle adjustment device along the antenna mount.

[0010] According to the utility model, the input device is designed as a touch-sensitive control panel.

[0011] According to the utility model, the input device is further configured to perform automatic and / or manual initialization of the encoder, whereby the test distance and the EUT reference height are adjustable depending on test or measurement requirements.

[0012] According to the utility model, the microcontroller calculates the target degree according to the following equation: Target degree = tan−1((Antenna current height (current height of an antenna)−EUT reference height (reference height of an electronic device under test)) / Test distance (test distance))

[0013] The utility model and its embodiments are explained in more detail below with reference to the drawing. The drawing shows: Fig. 1 schematically a device for all-round electromagnetic compatibility and high-frequency testing according to the present utility model; Fig. 2 a schematic representation of a first operating state of the device for all-round electromagnetic compatibility and high-frequency testing according to the present utility model; Fig. 3 a schematic representation of a second operating state of the device for all-round electromagnetic compatibility and high-frequency testing according to the present utility model; and Fig. 4 a schematic representation of a third operating state of the device for all-round electromagnetic compatibility and high-frequency testing according to the present utility model.

[0014] With reference to Fig. Device 1 for all-around electromagnetic compatibility and high-frequency testing according to the utility model essentially comprises an antenna holder 1, an automatic angle adjustment device 2, and a test antenna 3. The antenna holder 1 has a base 11 and a guide post 12 arranged perpendicular to the base 11. The automatic angle adjustment device 2 is arranged on the guide post 12, and the test antenna 3 is attached to the automatic angle adjustment device 2. The automatic angle adjustment device 2 comprises an input device 21, a distance sensor 22, an encoder 23, a motor driver 24, a microcontroller 25, and a motor 26. The input device 21, the distance sensor 22, the encoder 23, and the motor driver 24 are each connected to the microcontroller 25. The motor 26 is connected to the motor driver 24 and mounted on the guide post 12.Furthermore, in one embodiment of the utility model, the input device 21 can be designed as a touch-sensitive control panel or alternatively implemented as another electronic or digital input device.

[0015] With reference to Fig. 1, Fig. 2, Fig. 3 to Fig.4. The device provided by the present utility model for all-around electromagnetic compatibility and high-frequency testing is used such that the test distance between the test antenna 3 and the electronic device 4 under test (test distance) and the reference height of the electronic device 4 under test (EUT reference height) are first entered via the input device 21. Simultaneously, the distance sensor 22 measures the current height of the test antenna (antenna current height) and records it in real time. The microcontroller 25 transmits the test distance (test distance), the reference height of the electronic device 4 under test (EUT reference height), and the current height of the test antenna (antenna current height) to the encoder 23. Based on the aforementioned parameters, the encoder 23 calculates the target degree according to the following equation: Target angle = tan−1((current height of a test antenna−reference height of a testing electronic device) / test distance))

[0016] Subsequently, the motor driver 24 controls the motor 26 in such a way that the motor 26 performs a vertical displacement along the guide post 12 and is simultaneously rotated into the calculated target angle, so that the test antenna 3 is aligned in the azimuth and elevation direction with the electronic device 4 to be tested.

[0017] From the foregoing description, it can be seen that the device for all-round electromagnetic compatibility and high-frequency testing according to the utility model has, in particular, the following features and effects compared to the prior art: 1. In the present utility model, the test distance and the height of the electronic device under test (EUT reference height) are entered via the input device. After measuring and recording the current height of the test antenna using the distance sensor, the encoder calculates the target angle. The motor then moves and rotates the test antenna to the target angle, aligning it with the electronic device under test in both azimuth and elevation directions. Compared to known methods where the angle is adjusted manually using mechanical devices, the test procedure of the present utility model is faster, thus effectively reducing the measurement time. 2. The automatic angle adjustment device moves and rotates the test antenna to the target angle, aligning it in azimuth and elevation with the direction of strongest radiation from the electronic device under test. Compared to known manual adjustment methods, the device for omnidirectional electromagnetic compatibility and high-frequency testing according to the utility model allows for more precise positioning and angle adjustment of the test antenna, thereby improving measurement accuracy.

[0018] The foregoing description merely presents some exemplary embodiments of the present utility model and is not to be understood as limiting the scope of protection of the utility model. For those skilled in the relevant field, further modifications and improvements are possible while maintaining the basic concept of the utility model, all of which fall within the scope of protection of the present utility model. Reference symbol list 1 antenna holder 11 Basic 12 guideposts 2 automatic angle adjustment devices 21 Input device 22 Distance sensor 23 encoders 24 motor drivers 25 microcontrollers 26 engine 3 Test antenna 4. Electronic device to be tested

Claims

Device for all-around electromagnetic compatibility and high-frequency testing, comprising: an antenna holder (1); an automatic angle adjustment device (2), wherein the automatic angle adjustment device (2) is arranged on the antenna holder (1) and is movable along the antenna holder (1) in a vertical direction, the automatic angle adjustment device (2) comprising: a motor (26) configured to move the automatic angle adjustment device (2) along the antenna holder (1) in a vertical direction; an input device (21) for entering a test distance and for setting a reference height of an electronic device under test; a distance sensor (22) for measuring and detecting the current height of a test antenna;an encoder (23) connected to the input device (21) and the distance sensor (22) and configured to calculate a target angle based on the current height of the test antenna, the test distance, and the height of the electronic device under test; a motor driver (24) connected to the motor (26) and configured to control the motor (26) depending on the target angle; and a microcontroller (25) connected to and controlling the input device (21), the distance sensor (22), the encoder (23), and the motor driver (24); and a test antenna (3) connected to the automatic angle adjustment device (2) and driven by the motor (26) to rotate to the calculated target angle. Device for all-round electromagnetic compatibility and high-frequency testing according to claim 1, characterized in that the input device (21) is designed as a touch-sensitive control panel. Device for all-round electromagnetic compatibility and high-frequency testing according to claim 1, characterized in that the input device (21) is further configured to perform an automatic initialization and / or a manual initialization of the encoder (23), wherein the test distance and the reference height of the electronic device to be tested are adjustable depending on test or measurement requirements. Device for all-round electromagnetic compatibility and high-frequency testing according to claim 1, characterized in that the microcontroller (25) calculates the target angle according to the following equation: Target angle = tan − 1 ( ( current height of a test antenna − reference height of an electronic device to be tested ) / test distance ).

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