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RF 144 MHz Transceiver Unit Prototype
Introduction
This article describes the design and implementation of a 144 MHz Transceiver.
Requirements
In order for the system to perfectly fit the application, several requirements must be met. These requirements are stated below:
| Requirement # | Description | Date Modified |
| T144_SYS_01 | The system shall be implemented on a 1 or 2-layer PCB | |
| T144_SYS_02 | The system shall use FSK ASK mod/demod for data transmission/reception. | 28/8/2024 |
| T144_SYS_03 | ||
| T144_SYS_04 | ||
| T144_SYS_05 | The system shall have its own STM32f103C8T6 controller | |
| T144_SYS_06 | ||
| T144_SYS_07 |
HW System Design
Software Tools
Smith chart: Used to design and analyze RF circuits (specifically impedance matching networks).
LTspice: It is an electronic simulation tool used to simulate electronic circuits.
Subsystems Design
144MHz Modulation/Demodulation Scheme