Abstract
Components, those bits and pieces that make up a radio frequency (rf) circuit, seem at times to be taken for granted. A 1-megohm resistor presents an impedance of at least 1 megohm. The reactance of an inductor always increases with frequency. However, things are not always as they seem. Capacitors at certain frequencies may not be capacitors at all, but may look inductive, while inductors may look like capacitors, and resistors may tend to be a little of both. This chapter discusses the properties of resistors, capacitors, and inductors at radio frequencies as they relate to circuit design. The chapter reviews the most simple component of any system and examines its problems at radio frequencies. Wire in an rf circuit can take many forms. Wire-wound resistors, inductors, and axial-leaded and radial-leaded capacitors all use a wire of some size and length either in their leads or in the actual body of the component or both. Wire is also used in many interconnect applications in the lower rf spectrum.
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