New Analysis and Design Techniques for Arbitrary Reactance Trap Dipoles

The work presents a significantly revised analysis of a classic resonator loaded antenna– the trap dipole. The authors demonstrate in calculation, simulation, and measurement that trap dipoles antennas are not matched or resonant at the same frequency as the trap load resonance. The new analysis unites traditional high impedance trap loads with a wide variety of resonant and reactive loads to achieve multiband antenna performance with quasi-first order field distributions at the operating frequencies. The revised analysis enables the trap dipole to be expanded into a new framework for the design of a wide variety of multi-band or reconfigurable resonator loaded antennas.