This is an article edited by the user "com666", for which, I would like to thank them....!!!   The range of mobile communications covers a wide frequency band. The bands LTE800, LTE900, LTE1800, LTE2600 are already used to transmit LTE signals in Russia. 3G signals are transmitted in the ranges wcdma900, wcdma2100.
To receive mobile signals in these ranges you need broadband antennas. Among industrial designs, it is difficult to find simple and repetitive designs. Most often, antenna manufacturers use separate antennas for the low-frequency and high-frequency parts of the range to cover the entire range and combine them with a frequency-dependent combiner.
This approach has many disadvantages, such as:
The design of the antenna is much more complicated. The hardest thing to do is a filter adder.
The area occupied by the antenna is increasing.
Losses from summing ranges are growing.
Examples of such antennas in the photo below. SHYAM Antenna for 900 + 1800 Dual Band Repeater: However, full coverage of all ranges of mobile communications is not provided.
There is a need for a simple broadband design with the overlap of the entire range of mobile communications 800-1700 MHz.
Here is an example of such an antenna: The antenna is a modernized broadband Batwing, 1945 patent.
"Batwing Super-Turnstile Antenna
US Patent Number: 2480153
Year: 1945
Inventor: Robert W. Masters
Original Document: US Patent Number 2480153 "
There is a mention of this antenna at Rothamel in the book "Antennas" The antenna sheet can be cut from a flat galvanized sheet, 0.7 mm in one pass with a laser cutter. Additionally, you need to solder or rivet the cables from the same material with a size of 34x14mm. The antenna uses two flat square screens:
Lower 220x220, above 95x95.
Specifications: