Variable delay line with microstrip delay elements selectively c

Details Variable delay line with microstrip delay elements selectively c Variable delay line with microstrip delay elements selectively c

1992-12-23

1994-08-16

Gensler, Paul

Wave transmission lines and networks

Coupling networks

Delay lines including a lumped parameter

333140, 333156, H03H 720

Patent

active

053390563

ABSTRACT:
A variable delay line includes a package housing (61); a circuit board (68) provided within the package housing; a ground conductor pattern (69) provided on a backside of the circuit board; an electrical circuit (70) provided on a top surface of the circuit board and including input and output terminal lands (72, 75); a plurality of pairs of shunt lands (76), each pair being connected by a microstrip line (77); a plurality of pairs of element connection lands (78), each being connected to a delay element (79, 80, 81); and a plurality of pairs of connecting contacts (67) movable between a first position in which the connecting contacts connect the shunt microstrip line in series to the electrical circuit and a second position in which the connecting contacts connect the delay element in series to the electrical circuit while disconnecting the shunt microstrip line from the electrical circuit, eliminating major mismatching elements from the delay line, thereby improving high-frequency characteristics.

REFERENCES:
patent: 4438416 (1984-03-01), Schiller et al.
patent: 4620164 (1986-10-01), Kameya
patent: 5177457 (1993-01-01), Kaneko et al.

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