modulator

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Image Rejection Ratio (IMRR) with transmit IQ gain/phase imbalance

by Krishna Sankar on January 31, 2013

iq_modulator_with_gain_phase_imbalance

The post on IQ imbalance in transmitter, briefly discussed the effect of amplitude and phase imbalance and also showed that IQ imbalance results in spectrum at the image frequency. In this article, we will quantify [...]

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Need for I-Q modulator and demodulator

by Krishna Sankar on April 5, 2008

spectrum of passband PAM

Post describes about the need for I-Q modulation by comparing the spectral efficiency of passband PAM and passband QAM.

D id you like this article? Make sure that you do not miss a new article by subscribing to RSS feed OR subscribing to e-mail newsletter. Note: Subscribing via e-mail entitles you to download the free e-Book on BER of BPSK/QPSK/16QAM/16PSK in AWGN.