Customers often feed back information: when they see the jammers produced by some test room jammer manufacturers and disassemble their shells, they can see the very conspicuous features: a copper wire is welded at the output end of each RF module as the antenna for signal transmission. The customer asks us, is this feasible?

The answer is yes. Copper wire can be used as an antenna. Moreover, copper wire is an ideal material for making antenna because of its low resistance and easy processing. However, in terms of the use of the antenna for the test room jammer, this simple method of directly welding a copper wire is not a good choice.

Why do many manufacturers of test room jammers choose to use separate copper wire as antenna? The reason is very simple: low cost, easy processing! After simple winding and forming, it can be welded with electric ferrochrome. Save labor and material costs. Imagine: for the mainstream 5g version of the examination room jammer, each device needs to have at least 10-12 antennas built-in and use copper wire as the transmitting antenna. Then, for the total cost of the whole examination room jammer, it can save a lot of cost. Thus, the price of jammer will be further reduced in order to form a competitive advantage of low price.

The use of copper wire as an antenna also brings obvious advantages and disadvantages in other aspects:

1. The important performance indexes of the antenna cannot be guaranteed: the standing wave frequency, standing wave ratio, gain and other important parameter indexes of the antenna. If copper wire is used as the antenna of the examination room jammer, especially in the case of mass production and supply, the manufacturing process and production process of copper wire can not meet the batch production, all indexes can be uniformly compliant, coupled with the manual welding of workers, It will produce unstable factors for various indicators.

2. Because the copper wire is easy to deform and stretch, even if the performance index of the test room jammer can be adjusted to the ideal state when it leaves the factory, it is still very easy to deform, stretch or distort the antenna during its transportation and use, which will directly affect the output performance of the signal.

From the above analysis, it can be seen that it is not advisable to choose a simple antenna made of simple copper wire for the antenna of the test room jammer. Then, what is the more economical and stable antenna selection scheme of jammer? Later we will continue to explain for you.