Calculating of Conductance and Matching Transmission Design for Radio and TV Network

In the calculating design of radio and TV network matching transmission, the high frequency impedence matching network which made up of reactance, conductance, and are widely used. For example, they are used in the field of radio frequency and microwave, the circuit of coupling of transmit equipments, prepare network between last grade power amplifier and feedback antenna, etc. When the impedance, which is to be matched, is a real number, the calculating and designing of the network are simple. But when the reactance of the impedance should not be ignored, such as the high frequency application of transistor, or when it is matched with transmission antenna, the calculating formular would be more complex. It's not easy to be remembered or to be anylized. A designing and calculating method of diagrammatize of conductance which can be applied in real number impedance circuit as well as in consentrate parameter network matching between real number and complex number impedance is described in detail in this paper. It is anylized theoretically and many examples show that the diagrammatize conductance is convenient, flexible and efficient. It will be a standard designing method for designing and calculating of radio and TV network match transportation.