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Mobile advertisement is billing information disseminated by mobile media, which aims to sale products and service by influencing users' attitude, intention and behavior. In this paper, the mobile advertisement refers to the advertisements sent to consumers'cellphones in the form of Short Message, which broadly exists in mobile marketing. With the rapid rise of the mobile internet business, mobile...
A new low-power analog Gaussian frequency-shift keying (GFSK) modulator is proposed and implemented in 0.18-CMOS process based on an analog computer implementation of the FM differential equation. The mixed-loop modulation approach is proposed to achieve high data rate and stable carrier frequency. The core of the GFSK modulator is a tunable harmonic oscillator consisting of two Gm-C integrators,...
A 2.4GHz ASK transmitter suitable for low power wireless capsule endoscope system is presented. The mixer-based frequency up-conversion transmitter architecture is employed to achieve high data rate. A pseudo-differential stacked class-A power amplifier using the current reused technique is proposed to save power. The transmitter mainly includes two parts: a 20MHz ASK modulator based on the constant...
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