Coaxial Cables: What Is An Rf Cable, Characteristics Of An Rf Cable, & Others
Coaxial cables - An introduction
- 1. Brief description of RF cable
- 2. Coaxial cable construction
- 3. Types
of coaxial cables
- a. Braided Flexible cable
- b. Semi-rigid
- c. Flat ribbon
- 4. Applications of RF coaxial cable
1.Brief description of RF cable
Anyone associated with electronics or as an user of electronic gadgets and appliances will be aware with different forms of cable, one comes across in our day-to-day life: from a simple wire carrying electrical power (such as a mobile phone charger), to the sophisticated ones found in submarines and satellite, to the ones seen connecting the antenna on a cellular base station tower (a familiar sight in the metros these days!) with the indoor equipment. However, the aim of this article is to cover different aspects of, a special category of cable, called the RF cable, used in Microwave and Millimeter wave engineering applications. We begin with defining a simple cable, and then proceed on, to discuss in detail about microwave/RF cable.
a. What is an RF Cable?
In simple term, it is notional, to think about the cable as an entity, which acts as a conduit for transporting energy from point A to point B. The energy being transmitted could be electrical in nature, such as, a DC power being supplied to different sections of an electronic circuit or an alternating one, such as AC power supplied from mains to an electronic system. The energy transported through a cable, could be viewed as a signal propagating through it, such as an audio cable, a video cable or a LAN data cable. In each of the above types, the stress is on the kind of signal it is transporting: data, audio or video. If this cable transports a signal, which is a very high oscillation-alternating signal, we enter the realm of microwave and RF, and we need special cable (as we will see later) to transport such a signal. The cables used for transporting such signals are broadly known as rf cables.