A high-performance ultra-narrow bandpass HTS filter and its application in a wind-profiler radar system

Chunguang Li; Qiang Zhang; Qingduan Meng; Liang Sun; Jiandong Huang; Yunfei Wang; Xueqiang Zhang; Aisheng He; Hong Li; Yusheng He; Sheng Luo

doi:10.1088/0953-2048/19/5/S49

A high-performance ultra-narrow bandpass HTS filter and its application in a wind-profiler radar system

Chunguang Li^*, Qiang Zhang, Qingduan Meng, Liang Sun, Jiandong Huang, Yunfei Wang, Xueqiang Zhang, Aisheng He, Hong Li, Yusheng He, Sheng Luo

^*Corresponding author for this work

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

57 Citations (Scopus)

Abstract

This paper reports a recent development of a narrowband high-temperature superconducting (HTS) bandpass filter with a fractional bandwidth of 0.35% in the L band. The filter exhibits a 10-pole quasi-elliptic function response implemented with a cascaded quadruplet coupling structure. The measured filter shows a midband insertion loss of 0.26 dB and a return loss better than -15 dB over the passband. Steep rejection slopes are obtained at the band edges and the measured skirt slope has exceeded 120 dB MHz^-1, resulting in an excellent out-of-band rejection very close to the band-edge. Combining this filter together with a special designed low-noise amplifier (LNA) as well as a cryo-cooler, an HTS subsystem was then constructed and mounted in the front end of a wind-profiler radar system, substituting the corresponding conventional parts. A field trial has shown that the HTS filter could markedly improve the sensitivity as well as the anti-interference capability of a wind-profiler radar system.

Original language	English
Pages (from-to)	S398-S402
Journal	Superconductor Science and Technology
Volume	19
Issue number	5
DOIs	https://doi.org/10.1088/0953-2048/19/5/S49
Publication status	Published - May 2006
Externally published	Yes

Access to Document

10.1088/0953-2048/19/5/S49

Cite this

@article{4f7e9e4e7441467d9c19eee6ea44f519,

title = "A high-performance ultra-narrow bandpass HTS filter and its application in a wind-profiler radar system",

abstract = "This paper reports a recent development of a narrowband high-temperature superconducting (HTS) bandpass filter with a fractional bandwidth of 0.35% in the L band. The filter exhibits a 10-pole quasi-elliptic function response implemented with a cascaded quadruplet coupling structure. The measured filter shows a midband insertion loss of 0.26 dB and a return loss better than -15 dB over the passband. Steep rejection slopes are obtained at the band edges and the measured skirt slope has exceeded 120 dB MHz-1, resulting in an excellent out-of-band rejection very close to the band-edge. Combining this filter together with a special designed low-noise amplifier (LNA) as well as a cryo-cooler, an HTS subsystem was then constructed and mounted in the front end of a wind-profiler radar system, substituting the corresponding conventional parts. A field trial has shown that the HTS filter could markedly improve the sensitivity as well as the anti-interference capability of a wind-profiler radar system.",

author = "Chunguang Li and Qiang Zhang and Qingduan Meng and Liang Sun and Jiandong Huang and Yunfei Wang and Xueqiang Zhang and Aisheng He and Hong Li and Yusheng He and Sheng Luo",

year = "2006",

month = may,

doi = "10.1088/0953-2048/19/5/S49",

language = "English",

volume = "19",

pages = "S398--S402",

journal = "Superconductor Science and Technology",

issn = "0953-2048",

publisher = "IOP Publishing Ltd.",

number = "5",

}

TY - JOUR

T1 - A high-performance ultra-narrow bandpass HTS filter and its application in a wind-profiler radar system

AU - Li, Chunguang

AU - Zhang, Qiang

AU - Meng, Qingduan

AU - Sun, Liang

AU - Huang, Jiandong

AU - Wang, Yunfei

AU - Zhang, Xueqiang

AU - He, Aisheng

AU - Li, Hong

AU - He, Yusheng

AU - Luo, Sheng

PY - 2006/5

Y1 - 2006/5

N2 - This paper reports a recent development of a narrowband high-temperature superconducting (HTS) bandpass filter with a fractional bandwidth of 0.35% in the L band. The filter exhibits a 10-pole quasi-elliptic function response implemented with a cascaded quadruplet coupling structure. The measured filter shows a midband insertion loss of 0.26 dB and a return loss better than -15 dB over the passband. Steep rejection slopes are obtained at the band edges and the measured skirt slope has exceeded 120 dB MHz-1, resulting in an excellent out-of-band rejection very close to the band-edge. Combining this filter together with a special designed low-noise amplifier (LNA) as well as a cryo-cooler, an HTS subsystem was then constructed and mounted in the front end of a wind-profiler radar system, substituting the corresponding conventional parts. A field trial has shown that the HTS filter could markedly improve the sensitivity as well as the anti-interference capability of a wind-profiler radar system.

AB - This paper reports a recent development of a narrowband high-temperature superconducting (HTS) bandpass filter with a fractional bandwidth of 0.35% in the L band. The filter exhibits a 10-pole quasi-elliptic function response implemented with a cascaded quadruplet coupling structure. The measured filter shows a midband insertion loss of 0.26 dB and a return loss better than -15 dB over the passband. Steep rejection slopes are obtained at the band edges and the measured skirt slope has exceeded 120 dB MHz-1, resulting in an excellent out-of-band rejection very close to the band-edge. Combining this filter together with a special designed low-noise amplifier (LNA) as well as a cryo-cooler, an HTS subsystem was then constructed and mounted in the front end of a wind-profiler radar system, substituting the corresponding conventional parts. A field trial has shown that the HTS filter could markedly improve the sensitivity as well as the anti-interference capability of a wind-profiler radar system.

UR - http://www.scopus.com/inward/record.url?scp=33645511665&partnerID=8YFLogxK

U2 - 10.1088/0953-2048/19/5/S49

DO - 10.1088/0953-2048/19/5/S49

M3 - Article

AN - SCOPUS:33645511665

SN - 0953-2048

VL - 19

SP - S398-S402

JO - Superconductor Science and Technology

JF - Superconductor Science and Technology

IS - 5

ER -

A high-performance ultra-narrow bandpass HTS filter and its application in a wind-profiler radar system

Abstract

Access to Document

Other files and links

Fingerprint

Cite this