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http://dx.doi.org/10.5394/KINPR.2004.28.10.875

Design and Fabrication of the SHP Mixer for the 5 GHz Band Wireless Communication System  

Kim Kab-Ki (Mokpo National Maritime University Faculty of Marine Electronic and Communication Eng)
Ahn Young-Sup (Mokpo National Maritime University Faculty of Marine Transportation System)
Publication Information
Journal of Navigation and Port Research / v.28, no.10, 2004 , pp. 875-879 More about this Journal
Abstract
In this paper, sub-harmonic pumped(SHP) mixer using anti-parallel diode pair(APDP) is designed for 5 GHz band wireless communication system. Conventional mixers mix LO with RF, and obtain IF signal from the difference between LO and RF. As the frequency increase, LO signal requires higher LO power, better phase noise characteristics, more stable La. However, using APDP, the SHP mixer mixes the 2nd harmonics of LO signal. Therefore, the SHP mixer has an advantage that the LO signal frequency required for IF signal is reduced at half value of LO fundamental frequency. When LO power is 3 dBm, the conversion loss of manufactured SHP mixer is 12.83 dB. The isolation of LO/IF, 2LO/IF, RF/1F and LO/RF is 39.17 dB, 58 dB, 34 dB, and 67.9 dB. respectively. For this case, IP3 at input is 8 dBm.
Keywords
APDP; ISM; Anti-parallel diode pair; Industrial Scientific Medical;
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