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The Journal of The Korea Institute of Intelligent Transport Systems Vol.5 No.2 pp.55-60
Broadband Double Balanced Diode Mixer Using a Marchand Balun With Vertical Coupling Structure
Abstract
In this paper, a broadband double balanced mixer is presented using a wideband Marchand balun implementation by vertical coupler. Frequency is selected as for RF, for LO, and 140 MHz for IF signals. When LO signal with 7 dBm at 2.64 GHz is injected, a conversion loss of 7.5 dB and RF to LO isolation of -45 dB are obtained. Also, an average conversion loss of 9 dB and RF to LO isolation of -25 dB are obtained for frequency band of .
