CMOS 40 GHz divide-by-5 injection-locked frequency divider

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CMOS 40 GHz divide-by-5 injection-locked frequency divider

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A 40 GHz divide-by-5 injection-locked frequency divider fabricated in a CMOS 0.18 µm process is presented. By utilising a series-LC bandpass filter that is connected to the common-mode node of the differential injection pair to bypass the unwanted second harmonic and produce high impedance for the desired fourth-order harmonic, the fourth-order harmonic (4f0) is peaked and mixed with input signals (at 5f0) to achieve the output frequency f0 (=5f0−4f0). With an injection power of −3 dBm, the measured maximum locking range is 735 MHz at a tuning voltage of 0.8 V. The total locking range covers 39.36–42.1 GHz as the tuning voltage rises from 0 to 1.8 V. This divider consumes 18 mW at 1 V supply voltage.

Inspec keywords: frequency dividers; millimetre wave filters; CMOS integrated circuits; band-pass filters; MIMIC

Other keywords: divide-by-5 injection-locked frequency divider; power 18 mW; frequency 39.36 GHz to 42.1 GHz; frequency 735 MHz; series-LC bandpass filter; voltage 0 V to 1.8 V; CMOS process; fourth-order harmonic; frequency 40 GHz; common-mode node

Subjects: CMOS integrated circuits; Filters and other networks; Microwave integrated circuits; Convertors

References

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      • T.-N. Luo , S.-Y. Bai , Y.-J.E. Chen . A 77 GHz CMOS injection-locked Miller frequency divider. Electron. Lett. , 1 , 57 - 59
    3. 3)
      • M.-C. Chaung , J.-J. Kuo , C.-H. Wang , H. Wang . A 50-GHz divide-by-4 injection lock frequency divider using matching method. IEEE Microw. Wirel. Compon. Lett. , 5 , 344 - 346
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      • J. Lee , M. Liu , H. Wang . A 75-GHz phase-locked loop in 90-nm CMOS technology. IEEE J. Solid-State Circuits , 6 , 1414 - 1426
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      • T.-N. Luo , S.-Y. Bai , Y.-J.E. Chen . A 44 GHz 0.18 µm CMOS superharmonic frequency divider. IEEE MTT-S Int. Microw. Symp. Dig. , 1409 - 1412
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