Apparatus for delaying radio frequency signals

Details Apparatus for delaying radio frequency signals Apparatus for delaying radio frequency signals

2007-03-06

2007-03-06

Pascal, Robert (Department: 2817)

Wave transmission lines and networks

Coupling networks

Delay lines including long line elements

C333S160000, C333S161000

Reexamination Certificate

active

10999516

ABSTRACT:
In the present technique for transmitting and delaying radio frequency signal transmission, an RF delay filter (102) is provided with at least one high permittivity material coaxial delay element (104) with each having an input port (114) and an output port (116). Multiple coaxial delay elements are operably coupled by a quarter-wave microstrip transmission line (230) to offset any frequency mismatch at the band edges of the delay elements. A series of capacitors (126, 128) are also included at each port of the coaxial elements to compensate for any resultant parasitic inductance.

REFERENCES:
patent: 5382932 (1995-01-01), Monti
patent: 6337609 (2002-01-01), Endou et al.
patent: 6529097 (2003-03-01), Nakaguchi et al.
patent: 6556102 (2003-04-01), Sengupta et al.
patent: 6952148 (2005-10-01), Snyder et al.
patent: 2003/0052750 (2003-03-01), Shamsaifar et al.
patent: 2003/0090344 (2003-05-01), Wang et al.

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