Experimental Investigations of Intermodulation Distortion in Tunable Ferroelectric Phase Shifters(Devices, <Special Section>Wireless Technologies and Computational Electromagnetics)

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概要

• 論文の詳細を見る

• This paper investigates intermodultation distortion in ferroelectric phase shifters depending on bias voltage. Two analog phase shifters based on barium-strontium-titantate (BST) coated sapphire substrates have been fabricated with interdigital capacitors (IDCs) which have 2 and 4μm spacing between adjacent fingers. In case of the phase shifter with 4μm-spaced IDCs, a phase shift of more than 121° was obtained with a maximum insertion loss of 1.8dB from 2.4 to 2.5GHz over a bias voltage range of 0-140V. The phase shifter with 2μm-spaced IDCs exhibited a phase shift of more than 135° with a maximum insertion loss of 2.37dB in the same frequency range. In this case, a bias voltage of 80V was used. Using 2 and 4μm-spaced phase shifters, a third-order intermodulation (IM3) measurement was carried out with a two-tone cancellation setup to investigate nonlinearity, resulting in an input third-order intercept point (IIP3) of about 30.5dBm and 38.5dBm, respectively.

• 社団法人電子情報通信学会の論文
• 2005-12-01

著者

• Kim Dongsu

  Korea Electronics Technol. Inst. Kor

• Kenney James

  School Of Electrical And Computer Engineering Georgia Institute Of Technology

• KIM Dongsu

  Electronic Materials & Packaging Research Center, Korea Electronics Technology Institute

関連論文

• Experimental Investigations of Intermodulation Distortion in Tunable Ferroelectric Phase Shifters(Devices, Wireless Technologies and Computational Electromagnetics)

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