iso 15693 Antenna Design for Asset tracking (13.56 Mhz)

I am making an asset tracking project for my FYP. I am following thr iso 15693 standard. Can some one plz point out an antenna that has a range of atleast 1 m? I will be making the antenna myself but can not find any IEEE paper to implement. Loop or Patch antenna is my target antenna.

Thanks!

I do a copper pipe antenna and the size is 50cm * 50cm，the reader output power is 2W, so the reader range is 70cm, if you use two antenna , the range can be 100cm