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Analog signal-processing in deep sub-micron technologies poses many challenges arising from both low supply voltage and intrinsic voltage-gain of short channel devices. Class-AB CMOS transconductance obtained by a pair of complementary transistors is a widely used power efficient building block because it has linear v - i characteristics. This is topologically the same as the logic inverter of CMOS...
Parallel coupled microstrip filters are extensively used as band pass filter in microwave communication because they are compact in size, easy to fabricate due to its planar structure. The responses of these filters are satisfactory for narrow bandwidth due to their relatively weak coupling. A severe limitation of the conventionally designed parallel coupled filters is parasitic response at harmonics...
The fractal geometries such as Koch curve, Sierpinsky gasket, and Hilbert curve, etc. have been widely studied and applied to design several microwave devices, such as antennas, frequency selective surfaces (FSS), and photonic band gap (PBG) devices. There are several advantages of these fractal devices including reduction of resonant frequencies, smaller size and broadband width. In this paper a...
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