The design of open-loop resonator HTSC linear-phase filter

A novel double coupling planar structure (a single microstrip line coupled with two resonators coincidental) is presented for the first time. Based on this structure, a six-pole parallel-coupled high-temperature superconducting bandpass filter with both linear phase response and quasi-elliptic function response is designed. The filter has a 40 MHz passband with a center frequency of 2,000 MHz. Its dimension is 18.67 mm 9 25.96 mm. At 77 K, minimum insertion loss is 0.26 dB in passband. The group delay variation is\3 ns over 70 % of the filter bandwidth.

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“…4 compared with those reported in [8][9][10][11][12][13][14][15] showed some unique features. Firstly, the symmetrical structure of Fig.…”

Section: (B)mentioning

confidence: 48%

“…Due to these properties, they are widely accepted in the system of mobile communication and satellite communication. As one of the applications, the designs of HTSC linear-phase filters have been reported in [11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Parallel-coupled linear-phase superconducting filter

et al. 2014

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“…ii) For bandpass filters with wide stop band, the Tsinghua University group fabricated a compact HTS filter operating at 360 MHz by using modified spiral resonators with a tight threeturn spiral and inner/outer tails [103], a compact narrow-band six-pole HTS filter at the UHF-band using novel resonators with modified interdigital fingers and vertical meander lines [104], and a novel HTS band-pass filter with a very wide stopband using the method of staggered resonant modes [105]. iii) For the linear-phase filters, the UESTC group has developed a series of HTS linear-phase filters, including extracted-pole structure [106], parallel structure [107] and crossing line structure [108]. The UESTC group showed that with single-pole HTS group delay equalizer, the nonlinearity of phase variation of the filter by using external equalization linear-phase technique can be conveniently compensated and a flatter group delay can then be easily achieved [109], [110].…”

Section: B Design Of Hts Filtersmentioning

confidence: 99%

Enabling High-Temperature Superconducting Technologies Toward Practical Applications

Jin

Xin

Wang

et al. 2014

IEEE Trans. Appl. Supercond.

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This work covers the high-temperature superconducting (HTS) technologies based on the highlights in recent achievements in the applied HTS field in China. Its comprehensive coverage includes practical HTS material manufacturing and characterization, large-scale applications, and electronic applications. The applied HTS technologies have been well enabled to build applicable devices, and their characteristics have been well verified in the HTS devices developed to be industrialized for practical applications. The highlighted HTS devices and their performance details reveal the trend and the necessary improvement required to reach the goal of industrial applications of HTS technologies. Index Terms-High-temperature (T c ) superconductor (HTS), HTS cable, HTS electronic device, HTS fault-current limiter, HTS large-scale application, HTS magnet, HTS measurement technique, HTS motor, HTS MRI, HTS strong current device, HTS transformer, HTS 2G wire. J. X. Jin is with the

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“…With the improved novel resonator, the filters shown in Figure 3 can be designed easily. When the orders of the filters are the same, the dimensions of the filter in Figure 3 are comparative to the one in Figure 1 cients between the resonators can be achieved by changing the distance between the resonators or the locations of the gaps of the resonators [5,6] . The locations of input and output points are adjustable by changing the locations of the gaps of the first resonator and the last one.…”

Section: Half-wavelength Resonatorsmentioning

confidence: 99%