A wideband HTS planar microwave balun

Xueqiang Zhang; Xiaofeng He; Yusheng He

doi:10.1109/TASC.2012.2193615

A wideband HTS planar microwave balun

Xueqiang Zhang^*, Xiaofeng He, Yusheng He

^*Corresponding author for this work

CAS - Institute of Physics

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

This paper presents a high-temperature superconducting (HTS) planar balun. The balun exhibits an excellent amplitude and phase balance performance. The balun was fabricated using double-sided HTS YBCO films on a 0.5-mm-thick 3-in LaAlO ₃ substrate. The balun demonstrates a wideband operation and a low insertion loss. The center frequency of the balun is 1.25 GHz. The return loss bandwidth of -18 dB is 1.02 GHz (the fractional bandwidth is 82%). The phase imbalance is less than 7. The amplitude imbalance is less than 0.7 dB, and the insertion loss is less than 0.31 dB over 0.69-1.77 GHz.

Original language	English
Article number	6194287
Journal	IEEE Transactions on Applied Superconductivity
Volume	22
Issue number	4
DOIs	https://doi.org/10.1109/TASC.2012.2193615
Publication status	Published - 2012
Externally published	Yes

Keywords

Baluns
high-temperature superconducting (HTS)
microwave circuits

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10.1109/TASC.2012.2193615

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title = "A wideband HTS planar microwave balun",

abstract = "This paper presents a high-temperature superconducting (HTS) planar balun. The balun exhibits an excellent amplitude and phase balance performance. The balun was fabricated using double-sided HTS YBCO films on a 0.5-mm-thick 3-in LaAlO 3 substrate. The balun demonstrates a wideband operation and a low insertion loss. The center frequency of the balun is 1.25 GHz. The return loss bandwidth of -18 dB is 1.02 GHz (the fractional bandwidth is 82%). The phase imbalance is less than 7. The amplitude imbalance is less than 0.7 dB, and the insertion loss is less than 0.31 dB over 0.69-1.77 GHz.",

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AU - He, Yusheng

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AB - This paper presents a high-temperature superconducting (HTS) planar balun. The balun exhibits an excellent amplitude and phase balance performance. The balun was fabricated using double-sided HTS YBCO films on a 0.5-mm-thick 3-in LaAlO 3 substrate. The balun demonstrates a wideband operation and a low insertion loss. The center frequency of the balun is 1.25 GHz. The return loss bandwidth of -18 dB is 1.02 GHz (the fractional bandwidth is 82%). The phase imbalance is less than 7. The amplitude imbalance is less than 0.7 dB, and the insertion loss is less than 0.31 dB over 0.69-1.77 GHz.

KW - Baluns

KW - high-temperature superconducting (HTS)

KW - microwave circuits

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JO - IEEE Transactions on Applied Superconductivity

JF - IEEE Transactions on Applied Superconductivity

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ER -

A wideband HTS planar microwave balun

Abstract

Keywords

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