Comparison of conventional and fiberoptic manifolds for a dual band (UHF and S) phased-array antenna

Goutzoulis, Anastasios P.; Gouse, Ronald

doi:10.1109/8.560343

Cited by 6 publications

(2 citation statements)

References 10 publications

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“…Figure 2(a, b and c) illustrates the schematic diagrams of these three previous approaches. These attempts have demonstrated the low-weight and low power potential with some good performance characteristic [9]. However, there are several severe problems of these approaches: first, fast wavelength tunable laser diodes and high extinction (>40 dB) electro-optic switches are not available at this time; second, the requirement of using polarization-maintaining fibers makes the system integration extremely difficult; third, compared to the photolithography-defined waveguide-delay-lines, the accuracy of fiber-delay-lines is limited.…”

Section: Introductionmentioning

confidence: 97%

Integrated high-speed digital optical true-time-delay module for synthetic aperture radars

et al. 2005

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This paper provides a description of the research for the development of an integrated high speed true-timedelay module for synthetic aperture radars. The unique feature of the approach is that the true-time-delay waveguide circuit and electro-optic switching elements are integrated. As a result this integration significantly reduces the device size while simplifying the difficult packaging problem associated with the interfaces between optical fibers and optical switches. Such a monolithic approach provides greater precision for the RF phase control that the phase control provided by fiber-delay-lines as a result to the submicrometer accuracy of lithography-defined polymeric waveguides. More importantly, the optical switched true-time-delay network requires less electrical power due to the low power consumption of electrically-switchable waveguide gratings. Furthermore, the electrically-switchable waveguide gratings have a very fast switching speed (<50 µs) that is at least 100 time faster than any existing commercial optical switching matrix.

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Section: Introductionmentioning

confidence: 97%

Integrated high-speed digital optical true-time-delay module for synthetic aperture radars

et al. 2005

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“…1,5 A variety of optical time-delay technologies have been developed, including detector-switched optical waveguide delay lines, 2 fiber-grating prism based wavelength tunable laser diodes 3 and LiNbO 3 switches over fiber distribution networks. 4 In this paper, we present a monolithically integrated optical waveguide true-time-delay line with embedded highspeed electrically switchable Bragg gratings based on polymer-dispersed liquid crystals ͑LC͒.…”

Section: Introductionmentioning

confidence: 99%

Integrated high-speed digital optical true-time-delay line with embedded electrically switchable gratings

Tang

Lin

et al. 2005

Opt. Eng

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Abstract.A monolithically integrated high-speed true-timedelay line with embedded electrically switchable Bragg gratings was developed and characterized. Such a monolithically integrated device structure leads to a significantly reduced device size and allows a more precise RF phase control. A 40 ps reprogrammable optical true-time delay increment was acheived with a very fast switching speed of Ͻ50 s.

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RF Photonics for Radar Front-Ends

Pappert

Krantz

2007

2007 IEEE Radar Conference

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Comparison of conventional and fiberoptic manifolds for a dual band (UHF and S) phased-array antenna

Cited by 6 publications

References 10 publications

Integrated high-speed digital optical true-time-delay module for synthetic aperture radars

Integrated high-speed digital optical true-time-delay module for synthetic aperture radars

Integrated high-speed digital optical true-time-delay line with embedded electrically switchable gratings

RF Photonics for Radar Front-Ends

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