X/Ku waveband amplitude-phase control transceiver chip

Abstract

The invention discloses an X / Ku waveband amplitude-phase control transceiver chip. The chip comprises a numerical control attenuator, a first single-pole double-throw switch, a first low-gain amplifier, a second low-gain amplifier, a third low-gain amplifier, a first numerical control phase shifter, a second numerical control phase shifter, a third numerical control phase shifter, a second single-pole double-throw switch, a single-pole three-throw switch, a receiving input end, a transmitting output end and a transmitting and receiving common end. The first low-gain amplifier, the first numerical control phase shifter, the second low-gain amplifier, the second numerical control phase shifter, the third low-gain amplifier and the third numerical control phase shifter are sequentially cascaded. The first low-gain amplifier is connected with the numerical control attenuator and a second contact of the single-pole three-throw switch through a first single-pole double-throw switch, and thethird numerical control phase shifter is connected with a transmitting output end and a first contact of the single-pole three-throw switch through a second single-pole double-throw switch. A third contact of the single-pole three-throw switch is connected with 50 [omega] to the ground, and a common contact is connected with a transmitting and receiving common end. The X / Ku waveband phase shift precision is improved, the integration level is high, the consistency is good, and the overall performance index is excellent.

Description

technical field [0001] The invention belongs to the technical field of microwave and millimeter wave amplitude and phase control chips, in particular to an X / Ku band amplitude and phase control transceiver chip. Background technique [0002] Active phased arrays are widely used in electronic reconnaissance and electronic countermeasures because they can quickly realize the identification, search, tracking and feedback of multiple targets, and have the characteristics of high reliability and mobility. As the basic unit of the phased array system, the transceiver (T / R) component directly affects the performance of the phased array system. The amplitude and phase control circuit is the core component of the T / R component, so the research on the amplitude and phase control circuit is extremely important and key. [0003] In order to improve the combat accuracy of the phased array system, traditional T / R components usually use 6-bit digitally controlled phase shifters and 6-bit ...

AI Technical Summary

Problems solved by technology

[0003] In order to improve the combat accuracy of the phased array system, traditional T / R components usually use 6-bit digitally controlled phase shifters and 6-bit digitally controlled attenuators to realize the amplitude and phase control functions. The insertion loss is relatively large, especially in the X / Ku band, which usually has an insertion loss of about 10dB, which makes it impossible for T / R components to achieve optimal link design, that is, taking into account noise figure, output P-1 and energy consumption at the same time ; Although the 6-bit digitally controlled phase shifter can improve the phase shifting accuracy by rationally designing the connection sequence of the phase shifting units, the mutual influence brought about by cascading is always unavoidable

In addition, the use of independent digitally controlled phase shifters and digitally controlled attenuators is more complicated to assemble, which is not conducive to the consistency guarantee between channels

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