A 52GHz Millimeter-Wave PLL Synthesizer for 60GHz WPAN Radio

In this paper, we present the design of 52-GHz frequency synthesizer for 60 GHz WPAN application. The PLL consists of 26 GHz PLL and 52 GHz frequency doubler, generating two channels of output carriers with 2.08 GHz step by using high-speed four-modulus divider. The proposed PLL represents phase noise of - 89 dBc/Hz from 26.2 GHz carrier and - 81 dBc/Hz from 52.4 GHz carrier, at 1 MHz offset, respectively. Also, its integrated RMS phase noise from 1 MHz to 100 MHz is measured as 7.42deg Output frequency tuning range from the PLL is 50 to 53-GHz. The synthesizer including frequency doubler consumes 160 mA at 2.5V supply voltage and occupies 1.2 times 1.0 mm2 chip area.