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Image Rejection Ratio (IMRR) with transmit IQ 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...
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GATE-2012 ECE Q28 (electromagnetics)
Question 28 on electromagnetics from GATE (Graduate Aptitude Test in Engineering) 2012 Electronics and Communication Engineering paper. Q28. A transmission line with a characteristic impedance of 100...
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Migrated to Amazon EC2 instance (from shared hosting)
Being not too happy with the speed of the shared hosting, decided to move the blog to an Amazon Elastic Compute Cloud (Amazon EC2)Â instance. Â Given this is a baby step, picked up a micro instance...
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GATE-2012 ECE Q18 (signals)
Question 18 on signals from GATE (Graduate Aptitude Test in Engineering) 2012 Electronics and Communication Engineering paper. Q18. If , then the region of convergence (ROC) of its Z transform  in the...
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GATE-2012 ECE Q10 (networks)
Question 10 on networks from GATE (Graduate Aptitude Test in Engineering) 2012 Electronics and Communication Engineering paper. Q10. The average power delivered to an impedance by a current  is (A)...
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Bitwidth in CIC filter
The previous article on Cascaded Integrator Comb (CIC) filter discussed the filter structure, the frequency response and it’s usage in upsampling and downsampling. This post will briefly go over the...
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Digital Notch filter
In some designs, it may be required to have a digital filter which attenuates a single frequency component with the rest of the frequencies pass through. Filtering out of the power line frequency of...
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GATE-2012 ECE Q34 (signals)
Question 34 on signals from GATE (Graduate Aptitude Test in Engineering) 2012 Electronics and Communication Engineering paper. Q34. Consider the differential equation  with  and The numerical value of...
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GATE-2012 ECE Q13 (circuits)
Question 13 on analog electronics from GATE (Graduate Aptitude Test in Engineering) 2012 Electronics and Communication Engineering paper. Q13. The diodes and the capacitors in the circuit shown are...
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GATE-2012 ECE Q7 (digital)
Question 7 on digital from GATE (Graduate Aptitude Test in Engineering) 2012 Electronics and Communication Engineering paper. Q7. The output Y of a 2-bit comparator is logic 1 whenever the 2 bit input...
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GATE-2012 ECE Q15 (communication)
Question 15 on communication from GATE (Graduate Aptitude Test in Engineering) 2012 Electronics and Communication Engineering paper. Q15. A source alphabet consists of N symbols with the probability of...
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