Prototype wireless communication systems can be designed using discrete components, e.g., a low-noise amplifier (LNA), a power amplifier (PA), mixers, filters, frequency synthesizers, an analog-to-digital converter (ADC), a digital-to-analog converter (DAC), etc. Different circuit boards have to be designed, fabricated, assembled, tested, and connected with wires. Consequently, … [Read more...] about Low-cost software-defined radio for electrical engineering education
Radio frequency
Nanoscale on-chip inductors using a linearized meminductive circuit
This work presents a novel RF on-chip inductor that overcomes the problems with conventional large-sized inductors, which cannot be placed in an integrated circuit (IC) for large inductance values. The proposed inductor depends mainly on the meminductor, a new passive circuit element that has memory properties. This new circuit element is argued to be common in the nanoscale, … [Read more...] about Nanoscale on-chip inductors using a linearized meminductive circuit
Narrowband and wideband frequency modulation spectral characterization and bandwidth calculation
Frequency modulation (FM) is a class of analog modulation techniques that rely on varying the instantaneous frequency of a radio-frequency (RF) carrier in accordance with the baseband signal. The amplitude of the FM signal is constant, while its instantaneous frequency is time variant; therefore, the zero crossing rate (ZCR) of the carrier differs at a rate proportional to the … [Read more...] about Narrowband and wideband frequency modulation spectral characterization and bandwidth calculation
Free-space optical communication: From space to ground and ocean
During the last decade, there has been rapid advancement in the area of mobile broadband and wireless communication. The demand for higher data rates and capacity has continuously increased thanks to the growing need for information exchange. Currently, the data rates of the existing state-of-the-art radio-frequency (RF) or microwave technologies can no longer meet the … [Read more...] about Free-space optical communication: From space to ground and ocean
Pakistan’s first integrated circuit-based superheterodyne receiver design competition
Radio frequency (RF) and microwave is a very specialized research area that deals with the design and development of devices operating in the RF spectrum. The development cycle of microwave devices requires dedicated software packages and sophisticated equipment, which are typically very costly, especially for developing countries where only a very few universities have the … [Read more...] about Pakistan’s first integrated circuit-based superheterodyne receiver design competition