Low phase noise microwave oscillators using temperature compensated high-Q HTS shielded dielectric resonators

被引：0

作者：

Ghosh, IS ^{[1
]}

Schemion, D ^{[1
]}

Klein, N ^{[1
]}

机构：

[1] Forschungszentrum Julich, Inst Festkorperforsch, D-52425 Julich, Germany

来源：

APPLIED SUPERCONDUCTIVITY 1997, VOLS 1 AND 2 | 1997年 / 158期

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D O I：

暂无

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Dielectric resonators with Q-values > 10(6) at T=77K have been employed to build oscillators at 23GHz and 24.68GHz. To achieve ultimate Q-values we have used sapphire Whispering Gallery Mode resonators. We have optimised these resonators to suppress low-e housing modes and ensure oscillator operation on high-e modes only. Employing a commercial MESFET-amplifier we have determined the phase noise performance of the oscillators. To accurately set the oscillator frequency we have investigated the performance of a mechanical tuning mechanism by an HTS end plate. This tuning mechanism also allows for active compensation of long term frequency drifts by means of a piezoelectric fine-tune element. Also, we have incorporated this oscillator on a Stirling-type miniature cooler.

引用

页码：611 / 614

页数：4

共 9 条

[1] MEASUREMENT AND ANALYSIS OF A MICROWAVE-OSCILLATOR STABILIZED BY A SAPPHIRE DIELECTRIC RING RESONATOR FOR ULTRA-LOW NOISE [J].

DICK, GJ ;

SAUNDERS, J .

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 1990, 37 (05) :339-346

[2] High performance distributed Bragg reflector microwave resonator [J].

Flory, CA ;

Taber, RC .

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 1997, 44 (02) :486-495

[3]

FLORY CA, 1997 INT FREQ CONTR

[4] Low phase noise microwave oscillators based on HTS shielded dielectric resonators [J].

Ghosh, IS ;

Tellmann, N ;

Schemion, D ;

Scholen, A ;

Klein, N .

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 1997, 7 (02) :3071-3074

[5]

GHOSH IS, 1997 INT FREQ CONTR

[6] A SIMPLE MODEL OF FEEDBACK OSCILLATOR NOISE SPECTRUM [J].

LEESON, DB .

PROCEEDINGS OF THE INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS, 1966, 54 (02) :329-&

[7]

LINK G, 1996, THESIS U KARLSRUHE G

[8] 2D AND 3D COMPUTATIONS OF EIGENVALUE PROBLEMS [J].

SCHMITT, D ;

WEILAND, T .

IEEE TRANSACTIONS ON MAGNETICS, 1992, 28 (02) :1793-1796

[9] MICROWAVE-OSCILLATORS INCORPORATING CRYOGENIC SAPPHIRE DIELECTRIC RESONATORS [J].

TABER, RC ;

FLORY, CA .

IEEE TRANSACTIONS ON ULTRASONICS FERROELECTRICS AND FREQUENCY CONTROL, 1995, 42 (01) :111-119

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