In the field of electronic Radio Frequency Circuit Board Design technology, the characteristics of radio frequency circuits are different from ordinary low frequency circuits.
The main reason is that under high frequency conditions, the characteristics of the circuit board schematic design are different from those under low frequency conditions. Therefore, it is necessary to use radio frequency circuit theory to understand the working principle of radio frequency circuits.
The main reason is that under high frequency conditions, the characteristics of the circuit board schematic design are different from those under low frequency conditions
Under high frequency conditions, stray capacitance and stray inductance have a great influence on the circuit board design. Stray inductance exists in the internal self-inductance of the wire connection and the component itself. Stray capacitance exists between the conductors of the circuit and between the component and ground.
Under high frequency conditions, stray capacitance and stray inductance have a great influence on the circuit board design.
In low-frequency circuits, these spurious parameters have little effect on the performance of the circuit. As the frequency increases, the influence of the spurious parameters becomes greater. In the high-frequency heads of early VHF-band television receivers and the front-end circuits of communication receivers, the influence of stray capacitance is so great that it is no longer necessary to add additional capacitors.
