應用于硅基成像陣列的毫米波寬帶分頻器研究與芯片設計
[Abstract]:As one of the key modules of millimeter-wave frequency synthesizer, millimeter-wave wideband frequency divider is used to divide the output signal of VCO to obtain stable local oscillator signal. Its performance greatly affects the performance of the whole millimeter-wave frequency synthesizer, so it is of great significance to design a frequency divider with high speed, low power consumption and variable frequency division ratio. According to the system requirements of ALMA Bandl (31.3~45GHz) silicon imaging array PLL frequency synthesizer, PLL should work in the 27.3-33GHz frequency range, the input reference frequency is set to 50MHz. Therefore, the working frequency of the millimeter wave wideband frequency divider to be designed in this paper should cover 27.3-33 GHz, and the frequency division ratio is 546-660. In order to achieve the frequency resolution of 0.1GHz, a cascade structure of two frequency divider and programmable frequency divider is adopted in this paper. In order to meet the requirement of millimeter-wave broadband, the millimeter-wave frequency divider proposed in this paper consists of a millimeter-wave wideband frequency divider and a programmable divider based on pulse swallowing counter. Finally, the application scheme of the millimeter wave wideband frequency divider in silicon based imaging array PLL is presented. In this paper, the circuit design, pre-simulation, layout design, post-simulation, flow sheet and test verification of each chip are carried out by using 90nm CMOS process. The millimeter-wave wideband frequency divider adopts two-stage DCML flip-flop structure. The DCML divider with tail current source and the DCML divider with Razavi structure are designed and improved by using the series peak action of spiral inductor and transmission line inductor, and the input sensitivity is improved. By optimizing the circuit size and using pseudo-symmetric layout, the frequency of Razavi divider is increased to 40 GHz for the first time. The test results show that the improved DCML divider with Razavi structure realizes the 300MHz~40GHz frequency, the input sensitivity of 40dBm, and the minimum power dissipation is 0.96mmW. The chip area is 0.51x0.50mm2. The programmable divider based on pulse swallowing counter is composed of 8 / 9 dual mode frequency divider and programmable pulse swallowing counter. The 8 / 9 dual-mode divider uses an improved CML synchronous 4 / 5 frequency divider and an asynchronous dicusser structure. The simulation results show that the dual-mode divider can work at 10-20 GHz and the minimum input voltage amplitude is 50 MV. The lowest power consumption is only 3.84 MW. The programmable pulse swallowing counter adopts the improved TSPC D flip-flop with the function of number setting, which improves the working speed of the counter. The test results show that the frequency of the programmable divider is 7-20.5 GHz, the frequency division ratio is 16519, the power consumption of the core circuit is 8.52 MW, the input sensitivity is -23dBmand, the chip area is 0.575 脳 0.475mm2m2. Based on the research of the improved Razavi DCML millimeter wave wideband frequency divider and the programmable frequency divider based on pulse swallowing counter, a 25-37GHz millimeter wave wideband frequency divider is designed in this paper. The test results show that the frequency division ratio of the millimeter-wave wideband frequency divider is 32 / 1038. When the operating frequency is 37GHz and the frequency offset is 1MHz, the phase noise is lower than -130dBc / Hz, the sensitivity is better than -20dBm, the dynamic power consumption is 17.88mW, and the chip area is 0.730x0.475mm ~ 2. At the same time, it is applied to the ALMA Band _ 1 silicon-based imaging array phase-locked loop based on CP. The test results show that the highest working frequency of the PLL is 34.027 GHz, and the phase noise at the 1MHz frequency offset is -91.332 dBc / Hz when the frequency division ratio is 556. The phase noise at the frequency offset of 3MHz is -107.612 dBc / Hz. The power consumption of the PLL is 30.72 MW and the chip area is 1.32 x 1.01mm-2. In summary, the millimeter-wave wideband frequency divider designed in this paper can be used in ALMA Band1 silicon-based imaging array PLL and other millimeter-wave frequency synthesizers.
【學位授予單位】:東南大學
【學位級別】:博士
【學位授予年份】:2015
【分類號】:TN772;TN402
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