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Radio frequency single-pole multithrow switch and switch array used for millimeter wave holographic imaging

A single-pole multi-throw switch and radio frequency technology, which is applied in the direction of electronic switches, waveguide devices, electrical components, etc., can solve the problems affecting the radio frequency performance, reliability and stability of switch arrays, and high cost, so as to reduce the difficulty and cost of preparation Low, cost reduction effect

Inactive Publication Date: 2012-05-23
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the imaging system implemented by cascading switch arrays with multi-stage single-pole two-throw switch chips requires a large number of millimeter-wave single-pole two-throw switch chips and is expensive. At the same time, there are many lead connections between multiple chips, which affects the entire switch array. RF performance, reliability and stability

Method used

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  • Radio frequency single-pole multithrow switch and switch array used for millimeter wave holographic imaging
  • Radio frequency single-pole multithrow switch and switch array used for millimeter wave holographic imaging
  • Radio frequency single-pole multithrow switch and switch array used for millimeter wave holographic imaging

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Embodiment Construction

[0028] The specific implementation manner of the present invention will be further described below by taking an 8×8 switch array as an example in conjunction with the accompanying drawings, and the accompanying drawings are not drawn to scale for the convenience of illustration.

[0029] See figure 1 , the 8×8 array switch array for millimeter-wave holographic imaging in this embodiment includes: 9 radio frequency single-pole 8-throw switches; these 9 radio frequency single-pole 8-throw switches form an 8×8 array through two-stage cascading. The two-stage RF single-pole 8-throw switches are connected by SMP connectors and millimeter-wave connecting cables. The millimeter-wave signal enters the first-stage radio frequency single-pole 8-throw switch 101 from the input terminal, and the DC bias control terminal 103 controlled by the sequential logic strobes and outputs 8 channels, and the 8 channels are connected by 8 millimeter-wave connecting cables 102 and 8 channels respectiv...

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Abstract

The invention discloses a radio frequency single-pole multithrow switch and a switch array used for millimeter wave holographic imaging. The radio frequency single-pole multithrow switch comprises a switch chip, a radio frequency matching circuit and a direct current offset matching circuit, wherein the switch chip has a plurality of switch paths consisting of PIN switch diodes connected in series; and the PIN switch diodes are controlled to be switched on / off through direct current offset, so that the switch paths are controlled to be switched on / off. The switch array consists of a plurality of radio frequency single-pole multithrow switches in a two-stage cascade mode. The single-pole multithrow switch is realized by utilizing a semiconductor solid-state device, and is designed in an external matching mode; and compared with the conventional switch array, the switch array provided with the radio frequency single-pole multithrow switches and used for millimeter wave holographic imaging has the advantages of low processing difficulty, low cost, reliable performance, small volume and light weight. Meanwhile, different switches are flexibly selected to form switch arrays on different scales so as to meet the application requirements of various imaging systems.

Description

technical field [0001] The invention relates to a radio frequency high-speed switch and a switch array, in particular to a radio frequency single-pole multi-throw switch and a switch array for a millimeter-wave holographic imaging system, belonging to the technical field of switch arrays in microelectronics. Background technique [0002] In millimeter-wave holographic imaging systems, in order to quickly obtain high-precision target images, multiple transmitting and receiving antennas are generally used to scan and image by sharing one transmitter or receiver through a switch array. The sharing of transmitters or receivers by multiple transceiver antennas can significantly reduce the system's requirements on the number and consistency of transmitters or receivers, thereby achieving effective control of system cost and performance. [0003] Based on the system requirements of high-speed radio frequency and bandwidth, the switch array (generally more than 64 arrays) in the mil...

Claims

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Application Information

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IPC IPC(8): H03K17/56H01P1/15
Inventor 孙浩刘传全李凌云关福宏王伟钱蓉时翔孙晓玮齐鸣
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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