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This paper presents a novel down-conversion variable gain mixer (VGM) for the L-band DVB application. The proposed VGM adopts an approximated exponential equation for wide range gain variation and double balanced mixer technique for low power consumption. The VGM is simulated in 0.18 mum CMOS technology and measurement results show a gain variation of more than 45 dB and 45 dB-linear range with a...
A novel push-push oscillator using H-slot DGS resonator and CRLH-TL is presented. This triple-fold frequency push-push oscillator is composed of two active sub-circuits built on top side of double transmission lines and an H-slot built on the bottom side. Nonlinear phase slope of CRLH-TL provides that the fundamental oscillation is suppressed by -60dBc. The proposed push-push oscillator shows the...
In this paper, a balanced self-oscillating mixer (SOM) using DGS resonator operating at 5.2 GHz is presented. Since H- slot DGS (defected ground structure) resonator achieves a high Q factor, it provides low phase noise for the oscillator. A balanced mixer is utilized and provides good LO-RF isolation since two LO signals (LO+, LO-) are suppressed at the RF input port. The oscillator generates balanced...
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