Power Managment
"Power Management" project, focusing on enhancing the reliability and safety of biomedical devices. This initiative was critical in developing a robust circuit designed to protect sensitive medical equipment from a variety of electrical hazards.
Project Objectives: The primary goal of this project was to design a power management system that safeguards against:
-
High and low voltage fluctuations
-
Overcurrent conditions
-
Reverse polarity incidents
-
Electrostatic discharge (ESD)
-
Electromagnetic interference (EMF)
​
Design and Characterization of a Low Noise Amplifier - RF and Microwave Electronic
Low Noise Amplifier
Objectives: The objective of this lab is to familiarize with the Cadence toolset used in RF and Microwave Electronics course and try to design a simple low noise amplifier (LNA). We use LNA to amplify extremely low signals without adding much noise but maximize gain and linearity. While designing LNA, we need to maintain the following specified values for desired parameters.
​
Design and Characterization of a Voltage Control Oscillator -RF and Microwave Electronic.
A voltage-controlled oscillator (VCO) is an electronic oscillator that generates an output signal with a frequency that can be varied by applying a voltage to its control input. VCOs are commonly used in frequency synthesizers, phase-locked loops, and communication systems. The design of a VCO typically involves the use of a resonant circuit, such as an LC tank, and a transistor or other active device that provides gain and nonlinearity to generate the oscillator signal. The frequency of the oscillator is determined by the resonant frequency of the tank circuit and the bias conditions of the active device.
​
Design and Characterization of a Transistor Mixer -RF and Microwave Electronic
The objective of this lab is to Simulating with the Cadence toolset by designing a simple Mixer. We use Mixer which is drawn with a multiplier symbol. A real mixer can not be driven by arbitrary inputs. Instead, one port, the LO port is driven by a local oscillator with a fixed amplitude sinusoid. In a down conversion mixer, the other input port is driven by the RF signal and the output is at a lower IF signal. In a up conversion mixer the other input is the IF signal, and the output is the RF signal.
​
2.4Ghz Exciter
• Full lockable into an internal TCXO 10 Mhz reference or an external GPSDO
• TX /Standby function with RF VOX • Extreme accuracy and precision transmission frequency.
• Local Oscillator has 4 factory pre-programmed frequencies for 4 IF usages. (see table)
• Clean and stable signal. • Spurious emissions = < 50dB
• power supply 24 to 26V
• 200mW output 23dBm
• Local Oscillators use an Analog Devices AF4351 synthesizer
Simulation and Obtaining S parameter of a three-stage binomial transformer
implement by using a microstrip line structure on a printed circuit board with a relative dielectric constant of 3.7.
We assume the thickness of the substrate is 2 mm. Assume The center frequency is at 1 GHz. design this three-stage transformer and perform the S11 simulation.
​
Analysis of Reflection Coefficient in a WR90 Rectangular Waveguide with Dielectric Plug and Teflon-Filled Section
A WR90 rectangular waveguide operating in the TE10 mode has dimensions a = 2.29 cm, b = 1.02 cm. An air-filled section of the waveguide meets a Teflon-filled section as shown below. The Teflon has a relative permittivity of εr = 2.2. The loss tangent of the Teflon may be ignored in this problem.
DDS VFO with SI5351, 25MHz TCXO, and Arduino Nano
​
Variable frequency oscillator (VFO) is a critical component for many applications in signal processing and communications systems. A VFO serves as the backbone for numerous synthesizers, transceivers, and signal generators. This overview discusses the construction of a Direct Digital Synthesis (DDS) VFO using the SI5351 clock generator, a 25MHz Temperature Compensated Crystal Oscillator (TCXO), and an Arduino Nano.
Power Managment
"Power Management" project, focusing on enhancing the reliability and safety of biomedical devices. This initiative was critical in developing a robust circuit designed to protect sensitive medical equipment from a variety of electrical hazards.
Project Objectives: The primary goal of this project was to design a power management system that safeguards against:
-
High and low voltage fluctuations
-
Overcurrent conditions
-
Reverse polarity incidents
-
Electrostatic discharge (ESD)
-
Electromagnetic interference (EMF)
​
Design and Characterization of a Low Noise Amplifier - RF and Microwave Electronic
Low Noise Amplifier
Objectives: The objective of this lab is to familiarize with the Cadence toolset used in RF and Microwave Electronics course and try to design a simple low noise amplifier (LNA). We use LNA to amplify extremely low signals without adding much noise but maximize gain and linearity. While designing LNA, we need to maintain the following specified values for desired parameters.
​