Inexpensive coaxial microwave connector with low loss and reflec

Details Inexpensive coaxial microwave connector with low loss and reflec Inexpensive coaxial microwave connector with low loss and reflec

1988-09-01

1991-01-01

Pirlot, David

Electrical connectors

Including or for use with coaxial cable

439736, 439675, H01R 1718

Patent

active

049814451

ABSTRACT:
A unitary three-vane support bead (30) detunes the lowest-frequency transverse cavity modes, forcing resonances toward higher frequencies. Its impedance, compared with that of prior solid beads, is closer to the impedance of an air line. The bead is injection-molded in place, with a radial boss (35) at the radially outer end of each vane (32). Three apertures (14) in the outer conductor (11) capture the bosses, for economical but secure mounting; in fabrication these three apertures serve as injection gates. On its end (29) facing a mating device (65, 65f), the central conductor (21) has an axial bore (26) that holds a cylindrical sheet-metal spring (50). The outward-facing edge (56) of this spring protrudes slightly from the bore and is trimmed to form three distinct contact areas (52), each of relatively small circumferential extent, for kinematically stable engagement with the mating-device central pin (65). Either that pin or the central conductor (21) may penetrate the other, but only to help align them for mating, not to actually make contact. Thus there is no dependence on male-pin diametral tolerance, or on holding small interior axial clearances; and either a slotted or an unslotted female pin may be used without incurring the dimensional-variation problems of prior slotted pins.

REFERENCES:
patent: 3683320 (1972-08-01), Woods et al.
patent: 4326769 (1982-04-01), Dorsey et al.
patent: 4456324 (1984-06-01), Staeger
patent: 4648683 (1987-03-01), Botka
patent: 4718864 (1988-01-01), Flanagan

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