Radio frequency front-end transmitting module and phased array radar front-end chip

A transmitting module and RF front-end technology, which is applied in the field of RF front-end transmitting modules and phased array radar front-end chips, can solve the problems of large RF front-end modules, complex circuit structures, and affecting system performance, and achieve high suppression of odd harmonics , reduce the chip area, simplify the effect of the circuit structure

Pending Publication Date: 2021-12-21
XIDIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the mainstream RF front-end transmission modules generally include switches, filters, power amplifiers and other devices. The circuit structure of these devices is relatively complex and difficult to be highly integrated, resulting in a large size of the RF front-end module and large cascading losses of each part. , affecting system performance

Method used

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  • Radio frequency front-end transmitting module and phased array radar front-end chip
  • Radio frequency front-end transmitting module and phased array radar front-end chip
  • Radio frequency front-end transmitting module and phased array radar front-end chip

Examples

Experimental program
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Effect test

Embodiment 1

[0053] See figure 1, figure 1 It is a structural block diagram of a radio frequency front-end transmitting module provided by an embodiment of the present invention, which includes an active frequency multiplier 1, a power amplifier 2, and a phase shifter 3 connected in sequence; wherein, the active frequency multiplier 1 includes sequentially Connected input matching network 11, coupling network 12, active frequency multiplication core 13 and output matching network 14, wherein,

[0054] The coupling network 12 includes a power divider network 121 and a first coupler network 122; one end of the input matching network 11 is connected to the input signal Pin, and the other end is connected to the input end of the power divider network 121; the power The output end of the splitter network 121 is connected to the input end of the first coupler network 122, and the output end of the first coupler network 122 is connected to the frequency multiplier core 13;

[0055] The phase sh...

Embodiment 2

[0094] This embodiment takes a phased array radar front-end transmitting module with a transmitting frequency of 18GHz-24GHz as an example to describe in detail.

[0095] See Figure 4 , Figure 4 It is the circuit frame diagram of the phased array radar front-end transmitting module provided by the embodiment of the present invention, wherein the active frequency multiplier adopts figure 2 The circuit structure of the double frequency multiplier shown in the figure has an output power of 12dBm, an input signal frequency of 9GHz-12GHz, and a power of 0dBm. Connect the PA power amplifier (power amplifier, power amplifier) ​​after the frequency multiplier. The frequency range of the power amplifier is 18GHz-24GHz, and the output power is 36dBm. Please refer to Figure 5 , Figure 5 It is a simplified structure diagram of the PA power amplifier provided by the embodiment of the present invention. The phase shifter uses image 3 The circuit configuration shown. The active f...

Embodiment 3

[0104] This embodiment provides a phased array radar front-end chip, the chip is internally packaged with at least one radio frequency front-end transmitting module as provided in the first embodiment above. Because the single active frequency multiplier provided by the first embodiment not only simplifies the circuit structure, reduces the circuit area, but also has better circuit performance, so that the phased array radar front-end chip provided by this embodiment has a higher integrated degree and better performance.

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Abstract

The invention discloses a radio frequency front-end transmitting module. Theradio frequency front-end transmitting module comprises an active frequency multiplier, a power amplifier and a phase shifter which are connected in sequence, the active frequency multiplier comprises an input matching network, a coupling network, an active frequency multiplication core and an output matching network which are connected in sequence, and the coupling network comprises a power divider network and a first coupler network; the phase shifter comprises a first switch network, a second coupler network and a second switch network which are connected in sequence; the input end of the first switch network is connected with the output end of the power amplifier, and the output end of the second switch network is the output end of the whole radio frequency front-end transmitting module. According to the radio frequency front-end transmitting module provided by the invention, the chip integration level is greatly improved, and the module area is reduced; and moreover, the cascade loss of each part is greatly reduced, and the overall performance of the module is improved.

Description

technical field [0001] The invention belongs to the technical field of integrated circuits, and in particular relates to a radio frequency front-end transmitting module and a phased array radar front-end chip. Background technique [0002] Phased array radar is an electronic scanning radar using a phased array antenna. The phased array antenna is composed of multiple antenna subunits. Each antenna subunit has a radio frequency transceiver structure. The flexibility and adaptability of the radar antenna beam of the technology are very high, and many advantages make it more and more favored by researchers, and it is widely used in various aspects such as military, detection, and automotive radar. [0003] The RF front-end transmitting module mainly amplifies the modulated RF signal to a certain power value through the power amplifier, and then sends the amplified RF signal through the antenna. At present, the mainstream RF front-end transmission modules generally include swit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/282
CPCG01S7/282
Inventor 马晓华刘文良卢阳赵子越易楚朋王语晨
Owner XIDIAN UNIV
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