Terahertz full-360-degree reflection type phase shifter based on SiGe process

A phase shifter and reflective technology, applied in the field of terahertz full 360° reflective phase shifter, can solve the problems of difficult full 360° phase shift, small phase shift range, limited scanning range of phased array system, etc.

Pending Publication Date: 2020-04-03
TIANJIN UNIV MARINE TECH RES INST
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Problems solved by technology

However, the phase shift range of the traditional reflective phase shifter is small, and it is diff

Method used

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  • Terahertz full-360-degree reflection type phase shifter based on SiGe process
  • Terahertz full-360-degree reflection type phase shifter based on SiGe process
  • Terahertz full-360-degree reflection type phase shifter based on SiGe process

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Embodiment Construction

[0010] The technical solutions of the present invention will be described in detail below according to the accompanying drawings. The specific embodiments described here are only used to explain the present invention, but the protection scope of the present invention is not limited to the embodiments.

[0011] A terahertz full 360° reflective phase shifter based on SiGe process, its structural block diagram is as follows figure 1 As shown, the cascaded structure of 0° / 180° phase shifter and reflective phase shifter based on SiGe process HBT is adopted to realize a full 360° phase shifter with low insertion loss.

[0012] The detailed structure of the phase shifter is as figure 2 , the input terahertz signal passes through the balun T1 to realize the conversion of single-ended signal to differential, and the obtained differential signal is respectively input to the bases of the transconductance transistors M1 and M2 of the Gilbert structure. The collectors of M1 and M2 are co...

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Abstract

The invention discloses a terahertz full-360-degree reflection type phase shifter based on a SiGe process. By adjusting the structure of the reflection type phase shifter, the insertion loss and the phase shift range performance of the reflection type phase shifter are improved, the reflection type phase shifter which is balanced in power consumption and insertion loss and has a full 360-degree phase shift range is obtained, and the phase shifter with the structure can be applied to a millimeter wave/terahertz phased array system.

Description

technical field [0001] The invention belongs to the field of millimeter wave / terahertz integrated circuits, in particular to a terahertz full 360° reflective phase shifter based on SiGe technology. Background technique [0002] Phased array technology has the functions of beam forming and beam scanning, so it has obvious advantages in communication systems and radar systems, which can significantly improve the signal-to-noise ratio and sensitivity of the system, and reduce the impact on the power and noise of individual devices in the system. Require. Among them, the phase shifter is the most critical module in the phased array system, which can change the phase of the electromagnetic wave in the link to control the beam propagation direction. There are many ways to realize the phase shifter, which can be divided into active and passive according to whether it consumes energy. The active phase shifter is mainly a vector synthesis phase shifter, which obtains the desired ph...

Claims

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Application Information

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IPC IPC(8): H03H11/16
CPCH03H11/16Y02D30/70
Inventor 马建国李旭光周绍华赵升杨自凯杨闯张蕾李昭
Owner TIANJIN UNIV MARINE TECH RES INST
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