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- Sunday, July 11, 2004
- Characterisation of Schottky Varactor Diodes for Pulse Compression Circuits
- Published at:Irish Signal and System Conference (ISSC2004)
<!-- /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:12.0pt; mso-bidi-font-size:10.0pt; font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman";} @page Section1 {size:612.0pt 792.0pt; margin:70.85pt 70.85pt 70.85pt 70.85pt; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.Section1 {page:Section1;} --> The dispersive and attenuation properties of multilayer telecommunication line cards are discussed as part of 10 Gbit/s OC192 telecommunications systems. A number of different methodologies are described to compensate for dispersion, attenuation and general signal distortion within high bit rate electro-optic telecommunications systems. This work will report the use of pulse compression techniques to reduce distortion within conventional multilayer circuit boards. This is achieved using a non-linear transmission line which uses the non-linear capacitance-voltage (CV) characteristic of hyper-abrupt Schottky diodes to provide the non-linear function. The development of the Schottky diode based on silicon technology is reported and is explained. The special circuit topology chosen for this circuit enables both rising and falling edge compression. Using this approach the higher harmonic content of fast pulses is reconstructed and signal dispersion in the transmission line is compensated.
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