Mobile wireless communications device with polarization diversity wireless local area network (LAN) antenna and related methods

A polarization diversity wireless local area network (LAN) antenna comprising:

• a first antenna element having a first shape and a first polarization;
• and
• a second antenna element coupled to said wireless LAN transceiver having a second shape different from the first shape and a second polarization different from the first polarization;
• at least one of said first and second antenna elements comprising a feed branch and a loop branch, the loop branch having a first end coupled to said feed branch, a second end adjacent said feed branch and separated therefrom by a gap, and a loop-back section extending between the first and second ends;
• said feed branch comprising first and second feed points, the first end of said loop branch being coupled to the first feed point, and the second end of said loop branch being adjacent the second feed point.

A wireless local area network (LAN) communications method comprising:

• providing a polarization diversity wireless LAN antenna comprising a first antenna element having a first shape, and a second antenna element having a second shape different from the first shape;
• at least one of the first and second antenna elements comprising a feed branch and a loop branch, the loop branch having a first end coupled to the feed branch, a second end adjacent the feed branch and separated therefrom by a gap, and a loop-back section extending between the first and second ends;
• the feed branch comprising first and second feed points, the first end of the loop branch being coupled to the first feed point and the second end of the loop branch being adjacent the second feed point;
• and
• communicating signals over a wireless LAN via the first antenna element at a first polarization, and via the second antenna element at a second polarization different from the first polarization.

A mobile wireless local area network (LAN) communications device comprising:

• a portable, handheld housing;
• a wireless LAN transceiver carried by said portable, handheld housing;
• and
• a polarization diversity wireless LAN antenna for cooperating with said wireless LAN transceiver to communicate over a wireless LAN, said polarization diversity wireless LAN antenna comprising
• a first antenna element coupled to said wireless LAN transceiver having a first shape and a first polarization, and
• a second antenna element coupled to said wireless LAN transceiver having a second shape different from the first shape and a second polarization different from the first polarization;
• at least one of said first and second antenna elements comprising a feed branch and a loop branch having a first end coupled to said feed branch, a second end adjacent said feed branch and separated therefrom by a gap, and a loop-back section extending between the first and second ends;
• said loop-back section of said loop branch comprising at least one arcuate portion.

A mobile wireless local area network (LAN) communications device comprising:

• a portable, handheld housing;
• a wireless LAN transceiver carried by said portable, handheld housing;
• and
• a polarization diversity wireless LAN antenna for cooperating with said wireless LAN transceiver to communicate over a wireless LAN, said polarization diversity wireless LAN antenna comprising
• a first antenna element coupled to said wireless LAN transceiver having a first shape and a first polarization, and
• a second antenna element coupled to said wireless LAN transceiver having a second shape different from the first shape and a second polarization different from the first polarization, the first and second polarizations are substantially orthogonal to one another,
• said first and second antenna elements having different gain patterns, and the different gain patterns having a substantially equal main lobe gain,
• at least one of said first and second antenna elements comprising
• a feed branch comprising first and second feed points, and
• a loop branch having a first end coupled to said feed branch, a second end adjacent said feed branch and separated therefrom by a gap, and a loop-back section extending between the first and second ends,
• the first end of said loop branch being coupled to the first feed point, and the second end of said loop branch being adjacent the second feed point.

A mobile wireless local area network (LAN) communications device comprising:

• a portable, handheld housing;
• a wireless LAN transceiver carried by said portable, handheld housing;
• and
• a polarization diversity wireless LAN antenna for cooperating with said wireless LAN transceiver to communicate over a wireless LAN, said polarization diversity wireless LAN antenna comprising
• a first antenna element coupled to said wireless LAN transceiver having a first shape and a first polarization, and
• a second antenna element coupled to said wireless LAN transceiver having a second shape different from the first shape and a second polarization different from the first polarization, the first and second polarizations are substantially orthogonal to one another,
• said first and second antenna elements having different gain patterns, and the different gain patterns having a substantially equal main lobe gain,
• at least one of said first and second antenna elements comprising
• a feed branch, and
• a loop branch having a first end coupled to said feed branch, a second end adjacent said feed branch and separated therefrom by a gap, and a loop-back section extending between the first and second ends, said loop-back section comprising at least one arcuate portion.