资料介绍
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FREQUENCY-DIVISION MULTIPLEXERS 1649
( 3 dB reduction in conversion gain) has been measured and diffusion-cooled between 2 and 6 GHz. While this bandwidth is dened for a conversion sloss increase of 3 dB, the bandwidth dened for when the noise temperature has increased by 3 dB is about 1.5 times larger (B5.5 GHz for the phonon-cooled one). The LO power needed is less than 100 nW, which is much lower than that needed for Schottky diode mixers. BIBLIOGRAPHY
1. S. A. Maas, The RF and Microwave Circuit Design Cookbook, Artech House, Norwood, MA, 1998. 2. E. L. Kollberg, Mixers and detectors, in K. Chang, ed., Handbook of Microwave and Optical Components, Wiley, New York, 1990. 3. K. S. Yngvesson, Microwave Semiconductor Devices, Kluwer, Norwell, MA, 1991. 4. S. A. Maas, Microwa