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This chapter focuses on the electronic signal generation of THz carrier signals at 300 GHz based on electronic frequency multipliers. With the inherent generation of unwanted harmonics posing the risk of interferers in the RF domain, evaluation of the harmonic suppression is a key measurement requirement. A 300-GHz LO chain is characterized and analysed as a measurement example. Substrate-integrated waveguide (SIW) filters present a suitable option to, aside from on-chip filtering, further increase the spectral purity in-between cascaded multiplier microwave monolithic integrated circuits (MMICs) as well as at the desired output frequency range. Additionally, phase noise measurements carried out at 300 GHz are presented, and compared to the theoretical phase noise degradation values.

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Electronic Signal Generation

  • 章节

  • 出版模式：

    开放获取

  • 发表日期：

    2026年

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  • Dominik Wrana,
  • Ingmar Kallfass

摘要

This chapter focuses on the electronic signal generation of THz carrier signals at 300 GHz based on electronic frequency multipliers. With the inherent generation of unwanted harmonics posing the risk of interferers in the RF domain, evaluation of the harmonic suppression is a key measurement requirement. A 300-GHz LO chain is characterized and analysed as a measurement example. Substrate-integrated waveguide (SIW) filters present a suitable option to, aside from on-chip filtering, further increase the spectral purity in-between cascaded multiplier microwave monolithic integrated circuits (MMICs) as well as at the desired output frequency range. Additionally, phase noise measurements carried out at 300 GHz are presented, and compared to the theoretical phase noise degradation values.