Radio frequency synthesis for ultrastable X-band oscillators

A radio frequency (RF) resonator using glass-reinforced epoxy material for C and X band is proposed in this paper. Microstrip line technology for RF over glass-reinforced epoxy material is analyzed. Coupling mechanism over RF material and parasitic coupling performance is explained utilizing even and odd mode impedance with relevant equivalent circuit. Babinet’s principle is deployed to explicate the circular slot ground plane of the proposed resonator. The resonator is designed over four materials from different backgrounds which are glass-reinforced epoxy, polyester, gallium arsenide (GaAs), and rogers RO 4350B. Parametric studies and optimization algorithm are applied over the geometry of the microstrip resonator to achieve dual band response for C and X band. Resonator behaviors for different materials are concluded and compared for the same structure. The final design is fabricated over glass-reinforced epoxy material. The fabricated resonator shows a maximum directivity of 5.65 dBi and 6.62 dBi at 5.84 GHz and 8.16 GHz, respectively. The lowest resonance response is less than −20 dB for C band and −34 dB for X band. The resonator is prototyped using LPKF (S63) drilling machine to study the material behavior.

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Frequency Stabilization of X-Band Sources for Use in Frequency Synthesis into the Infrared

IEEE Transactions on Instrumentation and Measurement ◽

10.1109/tim.1974.4314260 ◽

1974 ◽

Vol 23 (3) ◽

pp. 187-195 ◽

Cited By ~ 4

Author(s):

Allan S. Risley ◽

John H. Shoaf ◽

J. Robert Ashley

Keyword(s):

Frequency Stabilization ◽

Frequency Synthesis ◽

X Band

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A feasibility study of C and X band radio frequency signals over fiber optic links for radar applications

ISSS Journal of Micro and Smart Systems ◽

10.1007/s41683-018-0025-3 ◽

2018 ◽

Vol 7 (2) ◽

pp. 61-69

Author(s):

D. Meena ◽

Mitha Thomas ◽

Shubhankar Mishra ◽

R. Durga ◽

S. Shylaja

Keyword(s):

Radio Frequency ◽

Feasibility Study ◽

Fiber Optic ◽

X Band ◽

Radio Frequency Signals ◽

Radar Applications

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Frequency synthesis of forced opto-electronic oscillators at the X-band

Chinese Optics Letters ◽

10.3788/col201715.010009 ◽

2017 ◽

Vol 15 (1) ◽

pp. 010009-10013 ◽

Cited By ~ 4

Author(s):

T. Sun T. Sun ◽

Li. Zhang Li. Zhang ◽

A. K. Poddar A. K. Poddar ◽

U. L. Rohde U. L. Rohde ◽

and A. S. Daryoush and A. S. Daryoush

Keyword(s):

Frequency Synthesis ◽

X Band ◽

Electronic Oscillators

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A Novel Instrument for Real-Time Measurement of Attenuation of Weather Radar Radome Including Its Outer Surface. Part II: Applications

Journal of Atmospheric and Oceanic Technology ◽

10.1175/jtech-d-17-0084.1 ◽

2018 ◽

Vol 35 (5) ◽

pp. 975-991 ◽

Cited By ~ 3

Author(s):

Alessio Mancini ◽

Jorge L. Salazar ◽

Rodrigo M. Lebrón ◽

Boon Leng Cheong

Keyword(s):

Radio Frequency ◽

Water Absorption ◽

Real Time ◽

Outer Surface ◽

Weather Radar ◽

Time Measurement ◽

Real Time Measurement ◽

X Band ◽

Reflected Signal ◽

Dry And Wet Conditions

Abstract The concept and theory of a novel instrument to characterize the radio frequency performance of a radome under different conditions, including dirtiness, wetness, and varying temperature, was presented and discussed in Part I. The proposed concept estimates the transmittance through the radome using the reflected signal, directly measured, and an algorithm to evaluate the water absorption on the radome surface. In this second part of the paper, the proposed concept was employed to characterize the radome of an operative X-band weather radar in both dry and wet conditions.

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