1:1 structural 40MHz crystal oscillator frequency synthesizer for 60GHz wireless communication

A technology of crystal oscillator frequency and wireless communication, applied in the direction of automatic power control, electrical components, etc., can solve problems such as technical difficulty, and achieve the effect of reducing cost and realization difficulty

Inactive Publication Date: 2012-07-25
INST OF MICROELECTRONICS CHINESE ACAD OF SCI +1
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Problems solved by technology

[0003] At present, China has opened the 59-64GHz frequency band as the frequency band for 60GHz technology. However, due to the technical difficulty, the application research on this frequency band has just started, and the 60GHz spectrum planning that can be used for 1:1 transceivers and suitable for China has not yet been realized. The frequency synthesizer structure of

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  • 1:1 structural 40MHz crystal oscillator frequency synthesizer for 60GHz wireless communication
  • 1:1 structural 40MHz crystal oscillator frequency synthesizer for 60GHz wireless communication

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[0019] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0020] This 1:1 structure 40MHz crystal oscillator frequency synthesizer for 60GHz wireless communication provided by the present invention adopts a phase-locked loop structure based on integer frequency division, and the phase-locked loop structure based on integer frequency division adopts The crystal oscillator frequency is 40MHz, and the crystal oscillator frequency is divided by 8 to generate a 5MHz frequency as the reference frequency of the phase frequency detector PFD. The frequency division ratio is controlled by a multi-mode frequency divider divided by 64 to 127. The frequency division of the multi-mode frequency divider than by 2 6 +2 5 P 5 +2 4 P 4 +2 3 P 3 +2 2 P 2 +2P 1 +P 0 decision, by changing ...

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Abstract

The invention discloses a 1:1 structural 40MHz crystal oscillator frequency synthesizer for 60GHz wireless communication. The frequency synthesizer adopts a phase-locked loop structure based on integer frequency division, and the phase-locked loop structure based on integer frequency division adopts a 40MHz crystal oscillator frequency as the reference frequency of a phase frequency detector (PFD), and the frequency dividing ratio is controlled by a by-64 to by-127 multimode frequency divider, the frequency dividing ratio of the multimode frequency divider is determined by 2<6>+2<5>P5+2<4>P4+2<3>P3+2<2>P2+2P1+P0, and the frequency division of all the integers between 64 and 127 can be achieved by changing high-low electrical levels from P0 to P5. By utilization of the 1:1 structural 40MHz crystal oscillator frequency synthesizer for 60GHz wireless communication disclosed by the invention, a frequency synthesizer structure suitable for the 60GHz frequency spectrum planning in China is designed, and therefore, the frequency synthesizer can be used for a double-conversion transceiver with a ratio of 1: 1.

Description

technical field [0001] The present invention relates to the technical field of high-speed short-distance wireless communication systems, in particular to a 1:1 structure 40MHz crystal oscillator frequency synthesizer for 60GHz wireless communication, which is applied to the 60GHz high-speed short-distance wireless communication system in WPAN (Wireless Personal Area Network) , is an important circuit module in a 60GHz wireless radio frequency transceiver. Background technique [0002] The advantage of 60GHz wireless communication is that it can achieve a transmission rate of up to Gbps order, and this technology will become the mainstream technology of ultra-high-speed wireless personal area network. Currently NEC, Samsung, Panasonic and LG and other consumer electronics manufacturers have jointly established the WirelessHD Alliance to promote the application of 60GHz technology in uncompressed high-definition video transmission, which shows its huge market potential. At pr...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03L7/08H03L7/18
Inventor 李志强张海英彭晓明陈宝善朱标荣
Owner INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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