A high frequency cable (1) for the 0.5 MHz to 1000 MHz range including at least one twisted pair (4, 5, 6, or 7) of conductors (8, 9) forming at least a part of a core (3), the core being covered by a sheathing (2), and the sheathing have a cross-sectional external shape (15) in the form of a reuleaux polygon (16), which results in an increased separation between cables (1') in a bundle.