My design works in a foresty area inside a collar of an elephant. These areas have at least -110dBm GSM strength (accurate ref. map linked) but, usually higher as I live in a small country where GSM coverage is easily provided.
Following is an excerpt from the datasheet of my GSM receiver
I am currently using a GSM antenna to receive GSM signals in harsh environment. But it may not be appropriate or the best suited. I'm wondering if I would have better reception if I chose an antenna with lower gain in my design.
Question 1: Does the gain of an antenna always increase with the decrease in directivity?
Question 2 : What type of GSM antenna is recommended for an application that can run in such low GSM coverage areas? What are the factors I should keep in mind to optimise this design to have higher possibility of connectivity?
Question 3 : What sort of an effect would the animals giant body have in the reception of GSM signals? If yes, what are the remedies I can do to reduce the impact of the same.