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A 1.485 Gbps Wireless Video Signal Transmission System at 240 GHz  

Lee, Won-Hui (ETRI)
Chung, Tae-Jin (ETRI)
Publication Information
The Journal of the Institute of Internet, Broadcasting and Communication / v.10, no.4, 2010 , pp. 105-113 More about this Journal
Abstract
In this paper, a 1.485 Gbps video signal transmission system using the carrier frequency of 240 GHz band was designed and simulated. The sub-harmonic mixer based on Schottky barrier diode was simulated in the transmitter and receiver. Both of heterodyne and direct detection receivers were simulated for each performance analysis. The ASK modulation was used in the transmitter and the envelop detection method was used in the receiver. The transmitter simulation results showed that the RF output power was -11.4 dBm($73{\mu}W$), when the IF input power was -3 dBm(0.5 mW) at the LO power of 7 dBm(5 mW) in sub-harmonic mixer, which corresponds to SSB(Single Side Band) conversion loss of 8.4 dB. This value is similar to the conversion loss of 8.0 dB(SSB) of VDI's commercial model WR3.4SHM(220~325 GHz) at 240 GHz. The combined transmitter and receiver simulation results showed that the recovered signal waveforms were in good agreement to the transmitted 1.485 Gbps NRZ signal.
Keywords
Video Signal Transmission; Sub-harmonic Mixer; Heterodyne Receiver; Direct Detection; HD-SDI;
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