A coaxial connector junction includes first and second coaxial connectors. The first coaxial connector engages the second coaxial connector, a substantially cylindrical member of a first central conductor extension of the first connector being inserted into the cavity of a second central conductor extension of the second connector, and a second outer conductor extension of the second connector being inserted into a first outer conductor extension of the first connector such that a capacitive element is created between the first and second outer conductor extensions by a gap between the first outer conductor extension and the second outer conductor extension. At least one of a length of the gap, an inner diameter of the second outer conductor extension, a thickness and dielectric constant of the capacitive element is selected such that the return loss of the junction is maintained below a preselected level over a preselected frequency range.