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A Millimeter-Wave CMOS Triple-Band Phase-Locked Loop With A Multimode LC-Based ILFD

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3 Author(s)
Hsien-Ku Chen ; Grad. Inst. of Electron. Eng., Nat. Taiwan Univ., Taipei, Taiwan ; Tao Wang ; Shey-Shi Lu

A millimeter-wave multiband phase-locked loop (PLL) is presented for the first time, which covers 40-, 60-, and 80-GHz bands. Three voltage-controlled oscillators corresponding to different frequencies are input to a multiband injection-locked frequency divider and switched on one at a time by a multiplexer as a band selector. The feedback loop embraces the following components: a chain of dividers with a fixed division-modulus of 256, a phase-frequency detector, a charge-pump, and a second-order loop filter. The PLL is clocked by a reference frequency of 78 MHz and its output power is higher than -9.5 dBm. The phase noise is -103 dBc/Hz at an offset frequency of 10 MHz. With a supply voltage of 1.5 V, the entire PLL consumes 114 mW. The chip is implemented in a 90-nm CMOS technology and measures 1.12 mm2.

Published in:

Microwave Theory and Techniques, IEEE Transactions on  (Volume:59 ,  Issue: 5 )

Date of Publication:

May 2011

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