| Autor: |
Zhuang, Leimeng, Roeloffzen, Chris G.H., Meijerink, Arjan, Burla, Maurizio, Marpaung, David A.I., Leinse, Arne, Hoekman, Marcel, Heideman, René G., van Etten, Wim |
| Jazyk: |
angličtina |
| Rok vydání: |
2010 |
| Předmět: |
|
| Zdroj: |
Journal of lightwave technology, 28(1), 19-31. IEEE |
| ISSN: |
0733-8724 |
| Popis: |
An experimental prototype is presented that illustrates the implementation aspects and feasibility of the novel ring resonator-based optical beamformer concept that has been developed and analyzed in Part I of this paper . This concept can be used for seamless control of the reception angle in broadband wireless receivers employing a large phased array antenna (PAA). The design, fabrication, and characterization of a dedicated chip are described, in which an 8$\times$1 optical beamforming network, an optical sideband filter for single-sideband suppressed carrier modulation, and a carrier re-insertion coupler for balanced optical detection are integrated. The chip was designed for satellite television reception using a broadband PAA, and was realized in a low-loss, CMOS-compatible optical waveguide technology. Tuning is performed thermo-optically, with a switching time of 1 ms. Group delay response and power response measurements show the correct operation of the OBFN and OSBF, respectively. Measurements on a complete beamformer prototype (including the electro-optical and opto-electrical conversions) demonstrate an optical sideband suppression of 25 dB, RF-to-RF delay generation up to 0.63 ns with a phase accuracy better than $\pi$/10 radians, and coherent combining of four RF input signals, all in a frequency range of 1–2 GHz. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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