Residual phase noise performance of X-band GaAs FET amplifiers at liquid nitrogen temperature

Abstract The purpose of this paper is to disclose improved crystal based frequency source system covering design techniques and experimental methodologies for the stabilization of phase noise performance of X-band phase-locked loop (PLL) at 10.6 GHz. Phase noise performance of PLL-based unit under test (UUT) is prone to disturbance occurred in random vibration profile frequency spectrum. UUT self-resonance plays vital role in occurrence of disturbance in random vibration profile. The stabilization of phase noise performance during dynamic (random) vibration condition is achieved by following methodologies, i.e. vibration-isolator compensation techniques, purification tactic for reference crystal of PLL, and spatial location analysis for finding out mounting position of reference crystal. Spatial analysis helps to filter out UUT self-resonance frequency from random vibration spectrum which leads to reduction of frequency resonance pickups during random vibration testing.

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Ring Oscillator Phase Noise Properties due to PSN with Deterministic Frequency

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.496.527 ◽

2012 ◽

Vol 496 ◽

pp. 527-533

Author(s):

Na Bai ◽

Hong Gang Zhou ◽

Qiu Lei Wu ◽

Chun Yu Peng

Keyword(s):

Phase Noise ◽

Ring Oscillator ◽

Cmos Process ◽

Analysis Method ◽

Noise Performance ◽

Supply Noise ◽

Total Phase ◽

Phase Noise Performance ◽

Oscillator Phase Noise ◽

Oscillator Phase

In this paper, ring oscillator phase noise caused by power supply noise (PSN) with deterministic frequency is analyzed. Results show that phase noise caused by deterministic noise is only an impulse series. Compared with the jitter caused by PSN, the phase noise caused by PSN with deterministic frequency contributes considerably less to total phase noise performance. To verify the analysis method, a CMOS ring oscillator is designed and fabricated using SMIC 0.13 µm CMOS process. Comparisons between the analytical results and measurements prove the accuracy of the proposed method

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Large-signal and phase noise performance analysis of active inductor tunable oscillators

Proceedings of the 2003 International Symposium on Circuits and Systems, 2003. ISCAS '03. ◽

10.1109/iscas.2003.1205661 ◽

2003 ◽

Author(s):

Xibo Zhang ◽

P.K.T. Mok ◽

Mansun Chan ◽

P.K. Ko

Keyword(s):

Performance Analysis ◽

Phase Noise ◽

Active Inductor ◽

Noise Performance ◽

Large Signal ◽

Phase Noise Performance

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Phase noise performance of the multilevel interferometric direct detection receivers

2012 14th International Conference on Transparent Optical Networks (ICTON) ◽

10.1109/icton.2012.6253736 ◽

2012 ◽

Author(s):

Konstantin G. Kuzmin ◽

Andre Richter ◽

Igor Koltchanov ◽

Hadrien Louchet ◽

Nikolay Karelin

Keyword(s):

Phase Noise ◽

Direct Detection ◽

Noise Performance ◽

Phase Noise Performance

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Synthesis and spectral studies of Cu(II), Ni(II), Co(II), Mn(II), Zn(II) and Cd(II) complexes of a new macroacyclic ligand n,n’-bis(2-benzothiazolyl)-2,6-pyridinedicarboxamide

Journal of the Serbian Chemical Society ◽

10.2298/jsc0605529g ◽

2006 ◽

Vol 71 (5) ◽

pp. 529-542 ◽

Cited By ~ 29

Author(s):

Kalagouda Gudasi ◽

Siddappa Patil ◽

Ramesh Vadavi ◽

Rashmi Shenoy ◽

Manjula Patil

Keyword(s):

Liquid Nitrogen ◽

Magnetic Moments ◽

Thermal Studies ◽

Liquid Nitrogen Temperature ◽

Octahedral Geometry ◽

Spectral Studies ◽

Conductance Data ◽

X Band ◽

Elemental Analyses ◽

Uv Visible

A new macroacyclic amide ligand N,N?-bis(2-benzothiazolyl)-2,6-pyridinedicarboxamide (BPD), formed by the condensation of 2,6-pyridinedicarbonyldichloride with 2-aminobenzothiazole and its Cu(II), Ni(II), Co(II), Mn(II), Zn(II) and Cd(II) complexes were synthesized. Their structures were elucidated on the basis of elemental analyses, conductance measurements, magnetic moments, spectral (IR, NMR UV-Visible, EPR and FAB) and thermal studies. The complexes exhibit an octahedral geometry around the metal center. Conductance data of the complexes suggested them to be 1:1 electrolytes. The pentadentate behavior of the ligand was proposed on the basis of spectral studies. The X-band EPR spectra of the Cu(II) and Mn(II) complexes in the polycrystalline state at room (300 K) and liquid nitrogen temperature (77 K) were recorded and their salient features are reported.

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