TQX-900A

RF antennas play a significant and central role in the field of radio frequency technology. RF antennas, used for both commercial and military purposes, are designed to pick up and emit radio frequency signals. Among the kinds of RF antennas, the most widely used and popular one is the TQX-900A. This article will focus on the application fields and working principle of the TQX-900A RF antenna.

Application fields

The TQX-900A antenna is generally regarded as the ideal workhouse product for commercial and governmental/military intelligence-gathering operations. It is designed for operation on a frequency range of 9 kHz to 900MHz, encompassing commercial radio and television broadcasts as well as citizens band radio signals. Because of its covert nature and wide frequency range, the TQX-900A antenna is ideal for any military and intelligence situation where concealment is paramount. It can be used in directed transmission or reception of high frequency (HF) and ultra-high frequency (UHF) signals.

The versatility of the TQX-900A antenna also makes it useful for non-military applications. Some of the most common uses include: cellular transmission and reception, GPS tracking systems, wireless local area networks (WLANs), digital broadcast television and radio, satellite communication systems, satellite navigation systems, and wireless audio systems.

Working principle

The TQX-900A antenna is an inductively coupled loop antenna which functions by producing a highly directional pattern of radiation. The antenna consists of a pair of closed coiled loops which are excited when a radio frequency (RF) signal is applied. As the RF signal is introduced into the antenna through the primary loop, an alternating current is induced in the secondary loop. The amplitude of the induced current is determined by the relative orientation between the primary and secondary loops. The direction of radiation of the antenna is controlled by the orientation of the loops.

The TQX-900A antenna is typically mounted and configured in such a manner that the two loops are partially overlapping in order to maximize their efficiency. By adjusting the orientation of the loops, the antenna can be made to transmit or receive in a desired direction. Additionally, the orientation of the loops can be used to adjust the antenna’s bandwidth. The antenna operates most efficiently in the circular polarization mode; however, it can also be operated in linear polarization mode in order to achieve greater range and better reception.

Apart from the two loops, the TQX-900A antenna also contains several components for matching the antenna to the feed line. This includes an electronic control system for automatically adjusting the antenna for optimum operation. Additionally, the antenna is equipped with a shotgun microphone which allows it to be remotely operated and fine-tuned.

Conclusion

In conclusion, the TQX-900A antenna is a highly versatile RF antenna which is suitable for both military and commercial applications. Its covert nature and wide frequency range make it perfect for intelligence-gathering operations. The antenna works by producing a highly directional pattern of radiation and using its two loops to both transmit and receive signals. With the addition of an electronic control system and shotgun microphone, the TQX-900A antenna is able to accurately pick up and emit radio frequency signals.