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Millimeter wave miniaturized multichannel transmitting-receiving subassembly and its phase compensation process

A transceiver component and phase compensation technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of unguaranteed phase consistency, no implementation method, poor phase modulation accuracy, etc., to achieve simple and easy operation of phase compensation method, and improve power Combination efficiency, the effect of increasing the effective radiation gain

Inactive Publication Date: 2008-08-06
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Based on the existing domestic and foreign manufacturing levels, chip-level active devices are easy to achieve the consistency of the output signal amplitude, but the phase consistency cannot be guaranteed, and the phase error is within ±180 degrees
Ordinary millimeter-wave multi-channel transceiver components use the method of adding a millimeter-wave phase shifter for phase compensation, and the insertion loss is large, reaching 7dB; and the phase modulation accuracy is poor, and the minimum adjustable angle of the phase is 11.25 degrees; adding a phase shifter also Will increase the length by 10 mm, making the system bulkier
For millimeter-wave miniaturized multi-channel transceiver components, under the condition of ensuring the same output power, under the constraints of the system requirements that the amplitude error between channels is within 0.5dB and the phase error is within 10 degrees, the method of adding a millimeter-wave phase shifter in the past is the same as There are irreconcilable contradictions in the structure and index requirements of the miniaturized system, and there is no relevant and effective implementation method at home and abroad. Therefore, how to easily compensate the amplitude and phase errors between the transmitting and receiving channels in the highly integrated active circuit is the key to realizing the miniaturization of millimeter waves. Key Difficulties of Channel Transceiver Components

Method used

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  • Millimeter wave miniaturized multichannel transmitting-receiving subassembly and its phase compensation process
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  • Millimeter wave miniaturized multichannel transmitting-receiving subassembly and its phase compensation process

Examples

Experimental program
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Effect test

Embodiment 1

[0047] Taking the phase error of the transmission channel as an example of 95 degrees to introduce the operation steps of the phase error compensation of the transceiver component proposed by the present invention:

[0048] 1. According to the requirements of the radar device, it is estimated that the phase relationship between the transmission channels is zero degrees;

[0049] 2. Use a vector network analyzer to measure the phase error of the transmit channel, and obtain the phase error θ between the two transmit channels of the transceiver component when the operating frequency is 33GHz 1 is 95 degrees.

[0050] 3. Choose a regular cuboid ceramic medium to load, the thickness is 0.5mm, the width is equal to the shielding cavity and the side wall is in full contact with the metal side wall of the shielding cavity. The height of the air shielding cavity is 3 mm, which is convenient for calculation and selection of a cuboid structure without transition section . At this time...

Embodiment 2

[0057] Taking the phase error of the transmission channel as 50 degrees as an example to introduce the phase error compensation operation steps of the transceiver component proposed by the present invention, the specific operation steps are the same as those in Embodiment 1, except that the length of the compensation section is different. Suppose the phase error θ 2 λ is 50 degrees and the operating frequency is 33GHz 0 9.09 mm, equivalent dielectric constant ε re is 1.583, and these known parameters are substituted into formula (1) to get

[0058] (4)

[0059] Perform phase compensation according to the operation steps in Example 1. Figure 4-2 shows the measured results of the phase error before and after compensation using the medium-loaded microstrip line method proposed by the present invention when the channel phase error is 50 degrees. After compensation, the operating frequency is 33GHz. The channel phase error is 2.21 degrees.

Embodiment 3

[0061] Taking the phase error of the transmission channel as 35 degrees as an example to introduce the phase error compensation operation steps of the transceiver component proposed by the present invention, the specific operation steps are the same as those in Embodiment 1, except that the length of the compensation section is different. Suppose the phase error θ 3 is 35 degrees, when the operating frequency is 33GHz λ 0 is 8.57 mm, the equivalent dielectric constant ε re is 1.583, and these known parameters are substituted into formula (1) to get

[0062] (5)

[0063] Perform phase compensation according to the operation steps in Example 1. Figure 4-3 shows the measured results of the phase error before and after compensation using the medium-loaded microstrip line method proposed by the present invention when the channel phase error is 35 degrees. After compensation, the working frequency is 33GHz. The channel phase error is 4.57 degrees.

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Abstract

The invention provides a millimeter wave miniaturized multichannel transceiving component device and a phase compensation method thereof. The transceiving component device of the invention comprises a transmitting branch, a receiving branch, a switch, a power splitting circuit and a metal box body, belonging to the radar component technical field. The transceiving component device is realized by a millimeter wave periplanatic integrated circuit based on MMIC (millimeter wave monolithic integrated circuit) technology, and no source phase-shift device is arranged inside a transceiving component. The interchannel phase compensation method of the invention is to utilize a micro strip loading high dielectric constant medium which plays a part in cascade connection in the transceiving component. Phase error compensation within the range of 0 to 360 DEG can be realized by selecting different loading media, and the amplitude consistency is not affected. The invention has the advantages of simple and convenient debugging, skillful design, miniaturization and so on and is a transceiving component device with strong operability and effectiveness and a phase compensation method thereof.

Description

technical field [0001] The invention belongs to the technical field of radar components. Background technique [0002] The transceiver component is an indispensable part of the radar, combined with different antennas, it can be widely used in mobile communications, military detection, electronic countermeasures and other fields. For different application backgrounds, different technical requirements are put forward for the transceiver components, but miniaturization and integration are effective ways to improve the practicability of the transceiver components. At the same time, single-channel transceiver components cannot meet the needs of high-performance radar devices. Only multi-channel transceiver components have more profound academic and engineering value. Combined with the technical index requirements such as the polarization characteristics and spatial power combination of the radar device, more stringent requirements are put forward for the inter-channel phase rela...

Claims

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Application Information

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IPC IPC(8): G01S7/02G01S7/28
Inventor 孙厚军杨怀志张伟吕昕于伟华徐强
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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