Small UWB antennas and method of designing the same

An ultra-wide band conical antenna having a bulb shape with a conical feed point having a predetermined input feed resistance, comprising:

• a conical feed point having a cone angle and a length and a predetermined input feed resistance;
• and
• a bulb shape disposed on said conical feed point, and
• wherein said conical feed point is operable to distribute charge in a charge distribution cone angle, ψ, corresponding to the cone angle and to distribute charge in charge distribution length, κ, corresponding to the length for the predetermined input feed resistance, and wherein said conical feed point and said bulb shape have a desired value for resistance, capacitance and Q-factor via as determined by a quasistatic antenna design algorithm based on ψ and κ.

An ultra-wide band conical antenna having a bulb shape with a conical feed point having a predetermined input feed resistance, comprising:

• a conical feed point having a cone angle, a length and a predetermined input feed resistance;
• and
• a bulb shape disposed on said conical feed point,
• wherein said conical feed point and said bulb shape have a resistance, desired capacitance and a minimized Q-factor as determined by a quasistatic antenna design algorithm based on ψ and κ,
• wherein ψ is a charge distribution cone angle,
• wherein κ is a charge distribution length, and
• wherein the predetermined input feed resistance comprises one of the group consisting of 30, 32, and 50 ohms such that the ultra-wide band conical antenna's shape is generated by a cylindrically-symmetric charge distribution.