Wideband monopole antenna

A monopole antenna, comprising:

• a radiating element, wherein the radiating element has a first curved outer surface that is rotationally symmetric about a longitudinal axis extending through the monopole antenna, wherein a first diameter at a first end of the radiating element is less than a second diameter at a second end of the radiating element;
• the first curved outer surface is defined, across height, by a first polynomial existing between an inner boundary and an outer boundary, wherein the inner boundary is defined by a second polynomial having the coefficients:
• [−1.8260e+07,3.8143e+06,−2.9036e+05,9.2911e+03,−99.4808,0.3379,0.0052]
• wherein the outer boundary is defined a third polynomial having the coefficients:
• [−1.7632e+07,3.7703e+06,−2.9922e+05,1.0539e+04,−158.8708,1.5534,0.0075]
• wherein the predetermined bandwidth is at least 750-6,000 MHz;
• and
• a ground plane disposed opposite the radiating element such that an electric field is generated by the radiating element using the ground plane as a counterpoise, wherein the ground plane has a second curved outer surface that is rotationally symmetric about the longitudinal axis, wherein a first diameter at a first end of the ground plane is less than a second at a second end of the ground plane, wherein the first end of the radiating element is disposed adjacent the first end of the ground plane.

A monopole antenna, comprising:

• a radiating element, wherein the radiating element has a first curved outer surface that is rotationally symmetric about a longitudinal axis extending through the monopole antenna, wherein a first diameter at a first end of the radiating element is less than a second diameter at a second end of the radiating element;
• wherein, the first curved outer surface is defined, across height, by a first polynomial existing between an inner boundary and an outer boundary, wherein the inner boundary is defined by a second polynomial having the coefficients:
• [−4.93500e+35,6.42410e+34,−3.84685e+33,1.40487e+32,−3.49753e+30,6.28527e+28,−8.42139e+26,8.56859e+24,−6.68061e+22,3.99837e+20,−1.82823e+18,6.31088e+15,−1.61039e+13,2.93397e+10,−3.59697e+07,2.65028e+04,−8.83888e+00]
• wherein the outer boundary is defined a third polynomial having the coefficients:
• [−4.55838e+35,5.95257e+34,−3.57632e+33,1.31063e+32,−3.27491e+30,5.90804e+28,−7.94839e+26,8.12231e+24,−6.36156e+22,3.82570e+20,−1.75807e+18,6.10037e+15,−1.56504e+13,2.8669e+10,−3.534904e+07,2.61810e+04,−8.7756e+00]
• wherein the predetermined bandwidth is at least 9,000-10,000 MHz;
• and
• a ground plane disposed opposite the radiating element such that an electric field is generated by the radiating element using the ground plane as a counterpoise, wherein the ground plane has a second curved outer surface that is rotationally symmetric about the longitudinal axis, wherein a first diameter at a first end of the ground plane is less than a second at a second end of the ground plane, wherein the first end of the radiating element is disposed adjacent the first end of the ground plane.