Quarter wave stub surge suppressor with coupled pins
AssigneeJohn Mezzalingua Associates, Inc.
InventorsErdogan Alkan, Ahmet Burak Olcen
Life of this patent
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Abstract
A surge suppressor for protecting electronic equipment by suppressing damaging surges of low frequency signals in a radio frequency (RF) transmission line, while allowing RF signals of a desired frequency range to pass through the transmission line. The surge suppressor can comprise a housing, a center pin connected to a stub, and at least one interface pin conductively coupled to the cable and capacitively coupled to the center pin. The surge suppressor can have a signal pass through bandwidth approximately 10 times exceeding the bandwidth of traditional quarter wavelength stub (QWS) devices, a higher return loss, and higher surge attenuation level. The surge suppressor can be symmetrically insertable into a cable providing an RF communication line.
Claims8
A surge suppressor for protecting electronic equipment by suppressing surges of low frequency electromagnetic signals in a radio frequency (RF) transmission line while allowing RF signals of a desired frequency range to pass through said transmission line, said transmission line being provided by a cable, said surge suppressor comprising:
- a center pin having a length, a longitudinal axis, and at least one end providing a first plate of an isolation capacitor;
- at least one interface pin conductively coupled to a segment of said cable and capacitively coupled to said center pin, said at least one interface pin providing a second plate of said isolation capacitor;
- at least one stub having a length, said at least one stub providing a short circuit for diverting said surges of low frequency signals to a ground;
- and
- a housing incorporating said center pin, said at least one stub, and said at least one interface pin;
- wherein said desired frequency range depends upon said stub length and said center pin length.
Dependencies are inferred from the claim text.