PCB Design

Does a simple wire antenna need a 50 ohm transmission line?

It depends.

  • If you’re talking about a “long wire” (more typically/accurately, a random wire antenna) used for receiving only, then the line impedance isn’t at all an issue. As long as it’s properly insulated at the right spots, you can run the wire right up to the receiver input and get excellent results. Using a 50 ohm line (which would almost certainly be some type of coax) here would generally be mostly for convenience, because the receiver has an input connector best used with a coaxial cable (e.g., a BNC or SO-239).
  • If we’re talking about an antenna to be used for transmitting, though, the answer becomes more complicated. There are two primary concerns when connecting a transmitter to its antenna:
    1. Getting the most power transferred to the antenna and actually radiated.
    2. Protecting the transmitter’s output stages from the effects of high SWR.

Available choices of feedlines range from the typical coax cables at 50–75 ohms through “ladder lines” than can have characteristic impedances in the hundreds of ohms.

 

Read More: Cable & Wire Harness Assembly

#PCB Design

Oliver Smith

Oliver is an experienced electronics engineer skilled in PCB design, analog circuits, embedded systems, and prototyping. His deep knowledge spans schematic capture, firmware coding, simulation, layout, testing, and troubleshooting. Oliver excels at taking projects from concept to mass production using his electrical design talents and mechanical aptitude.

Recent Posts

What Is a PCB Netlist? Everything You Need to Know Is Here

In the world of printed circuit board design and manufacturing, precision and accuracy are paramount.…

2 weeks ago

What Is Solder Wetting and How to Prevent Poor Wetting?

Soldering is a cornerstone technique in electronics assembly, it's used to connect electrical pieces and…

1 month ago

7 Critical Techniques to Improve PCB Thermal Management

Nowadays, electronic products are both compact and lightweight while performing a variety of functions. This…

1 month ago

What Is BGA on a PCB? A Complete Guide to Ball Grid Array Technology

As technology continues to advance in the electronics industry, packaging remains one of the key…

2 months ago

How to Create a PCB Drawing: A Step-by-Step Guide for Beginners

Bringing your electronic ideas to life begins with PCB drawing, which is the process of…

3 months ago

8 Leading PCB Design Software: A Comprehensive Comparison

Printed Circuit Board design is one of the most significant processes in electronics production. Deciding…

4 months ago