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A Silicon-Based CMOS 24~30 GHz Tripler
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Yizhao WAN1, 2, Hengzhi WAN1, 2, Dixian ZHAO1, 2
Journal of Telemetry, Tracking and Command | 2025, 46(4) : 26 - 32
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Journal of Telemetry, Tracking and Command | 2025, 46(4): 26-32
• Microwave and Millimeter Wave Technology •
A Silicon-Based CMOS 24~30 GHz Tripler
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Yizhao WAN1, 2, Hengzhi WAN1, 2, Dixian ZHAO1, 2
Affiliations
  • 1.School of Information Science and Engineering, Southeast University, Nanjing 210096, China
  • 2.National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
Published: 2025-07-15 doi: 10.12347/j.ycyk.20250120002
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This paper presents the design of a 24~30 GHz frequency tripler based on a 65 nm CMOS process, aiming at enhancing the performance of local oscillator (LO) chains in millimeter-wave communication systems. By leveraging the nonlinear characteristics of MOS transistors, the design optimizes the bias voltage and matches network to enhance the third harmonic while suppressing the fundamental and higher-order harmonics. The proposed frequency tripler employs a two-stage architecture: the first stage utilizes a differential common-source common-gate (CSCG) structure, efficiently extracts and amplifies the third harmonic, while the second stage, a power amplifier, further optimizes the bandwidth and output power through load-pull analysis. Post-layout simulation results demonstrate a 3 dB bandwidth of 24~30 GHz, achieving a relative bandwidth of 22%. At 27 GHz, the tripler delivers a saturated output power of 7.4 dBm, with a maximum in-band conversion gain of 4.2 dB. The suppression levels for the fundamental and fifth harmonics are 29 dBc and 28 dBc, respectively, maintaining good performance over a wide input power range. This design provides an efficient and compact solution for K/Ka-band LO chains in millimeter-wave communication systems.

Frequency tripler  /  CMOS technology  /  Harmonic suppression  /  Millimeter-wave communication  /  Local oscillator
Yizhao WAN, Hengzhi WAN, Dixian ZHAO. A Silicon-Based CMOS 24~30 GHz Tripler[J]. Journal of Telemetry, Tracking and Command, 2025 , 46 (4) : 26 -32 . DOI: 10.12347/j.ycyk.20250120002
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Year 2025 volume 46 Issue 4
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Article Info
doi: 10.12347/j.ycyk.20250120002
  • Receive Date：2025-01-20
  • Online Date：2026-03-13
  • Published：2025-07-15
Article Data
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History
  • Received：2025-01-20
  • Revised：2025-02-21
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Affiliations
    1.School of Information Science and Engineering, Southeast University, Nanjing 210096, China
    2.National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
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