Narrow-band, crossed-element, offset-tuned dual band, dual mode meander line loaded antenna

A dual-band antenna for simultaneous operation in two frequency bands, comprising:

• a) a ground plane;
• b) a first meander line loaded antenna element tuned to a first loop mode frequency and having a first monopole resonant frequency, said first antenna element being disposed upon said ground plane, wherein said first meander line loaded element comprises a first pair of vertical sides extending approximately perpendicularly from said ground plane and a first horizontal section juxtaposed between said vertical sides, wherein there are gaps between said first horizontal section and said vertical sides with a first meander line mounted at said gaps;
• c) a second meander line loaded antenna element tuned to a second loop mode frequency and disposed substantially orthogonal and crossing said first antenna element and disposed upon said ground plane, said second antenna element having a second monopole resonant frequency, wherein said second meander line loaded element comprises a second pair of vertical sides extending approximately perpendicularly from said ground plane and a second horizontal section juxtaposed between said vertical sides, wherein there are gaps between said second horizontal section and said vertical sides with a second meander line mounted at said gaps;
• d) one or more capacitive flaps mounted to said first antenna element for tuning said first monopole resonant frequency;
• and
• e) one or more capacitive flaps mounted to said second antenna element for tuning said second monopole resonant frequency.

A dual-band antenna comprising:

• a) a ground plane;
• b) a first bow-tie meander line loaded antenna element tuned to a first loop mode frequency and having a first monopole resonant frequency, said first antenna element being disposed upon said ground plane, wherein said first bow-tie meander line loaded element comprises a first pair of opposing vertical sides extending approximately perpendicularly from said ground plane and a first pair of triangle-shaped horizontal sections extending from said vertical sides, wherein there are side gaps between said horizontal sections and said vertical sides with a first pair of meander lines mounted at said side gaps;
• c) a second bow-tie meander line loaded antenna element tuned to a second loop mode frequency and disposed substantially orthogonal to said first antenna element and upon said ground plane, said second antenna element having a second monopole resonant frequency, wherein said second bow-tie meander line loaded element comprises a second pair of opposing vertical sides extending approximately perpendicularly from said ground plane and a second pair of triangle-shaped horizontal sections extending from said vertical sides, wherein there are side gaps between said horizontal sections and said vertical sides with a second pair of meander lines mounted at said side gaps;
• d) one or more capacitive flaps mounted to said first antenna element for tuning said first monopole resonant frequency;
• and
• e) one or more capacitive flaps mounted to said second antenna element for tuning said second monopole resonant frequency.