A 30GHz Wideband CMOS Injection-Locked Frequency Divider for 60GHz Transceiver

Chunqi Shi, Runxi Zhang, Zongsheng Lai

Institute of Microelectronic Circuits and Systems, East China Normal University, Shanghai, China.

DOI: 10.4236/cn.2013.53B2002                

Abstract

In this paper, a 30 GHz wide locking-range (26.2 GHz-35.7 GHz) direct injection-locked frequency divider (ILFD), which operating in the millimeter-wave (MMW) band, is presented. The locking range of the ILFD is extended by using differential injection topology. Besides, varactors are used in RLC resonant tank for extending the frequency tuning range. The post simulation results show that a wide locking-range of 9.5 GHz (30.7%) is achieved. When the VCO output frequency varies from 26.85 GHz to 34.42 GHz, the proposed ILFD can achieve divide-by-two correctly. Designed in 0.13 μm CMOS technology, the ILFD occupies a core area of 0.76 mm² while drawing 7 mA of current from 2.5 V power supply.

Keywords

CMOS; Injection-locked Frequency Divider (ILFD); Locking Range; VCO; Wideband

Conflicts of Interest

The authors declare no conflicts of interest.

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