US 12,074,370 B2
Location information from a receiver in a wireless network
Daniel Mittleman, Providence, RI (US); and Edward Knightly, Houston, TX (US)
Assigned to Brown University, Providence, RI (US); and William Marsh Rice University, Houston, TX (US)
Appl. No. 17/626,481
Filed by Brown University, Providence, RI (US); and William Marsh Rice University, Houston, TX (US)
PCT Filed Jul. 9, 2020, PCT No. PCT/US2020/041364
§ 371(c)(1), (2) Date Jan. 11, 2022,
PCT Pub. No. WO2021/011293, PCT Pub. Date Jan. 21, 2021.
Claims priority of provisional application 62/873,633, filed on Jul. 12, 2019.
Prior Publication US 2022/0285851 A1, Sep. 8, 2022
Int. Cl. H01Q 13/22 (2006.01); H01Q 1/22 (2006.01); H01Q 21/28 (2006.01)
CPC H01Q 13/22 (2013.01) [H01Q 1/2291 (2013.01); H01Q 21/28 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A multi-frequency wireless access device comprising:
a plurality of leaky waveguides, each of the leaky waveguides comprising a pair of parallel metal plates with open sides and a slot in one of the metal plates, the slot permitting radiation to leak out, the leaked radiation illuminating a range of angles depending on frequency, and wherein each of the leaky waveguides is oriented at a different angle with respect to the other leaky waveguides of said plurality of leaky waveguides.