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Class Information
Number: 333/162
Name: Wave transmission lines and networks > Coupling networks > Delay lines including long line elements > Helical line structures and lines developed from a helical structure
Description: Subject matter wherein the structure for retarding wave energy is a transmission line including at least one conductor having a helical configuration or a configuration developed from a helix.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7327208 |
Printed circuit board including a notch filter for attenuating radio frequency interference |
Feb. 5, 2008 |
| 7098755 |
High power, high linearity and low insertion loss single pole double throw transmitter/receiver switch |
Aug. 29, 2006 |
| 6762654 |
Delay line |
Jul. 13, 2004 |
| 6737938 |
Phase shifter, phased-array antenna, and radar |
May. 18, 2004 |
| 6667672 |
Compact high power analog electrically controlled phase shifter |
Dec. 23, 2003 |
| 6584675 |
Method for fabricating three dimensional traveling wave tube circuit elements using laser lithography |
Jul. 1, 2003 |
| 6313716 |
Slow wave meander line having sections of alternating impedance relative to a conductive plate |
Nov. 6, 2001 |
| 5977850 |
Multilayer ceramic package with center ground via for size reduction |
Nov. 2, 1999 |
| 5521568 |
Electrical delay line |
May. 28, 1996 |
| 5499005 |
Transmission line device using stacked conductive layers |
Mar. 12, 1996 |
| 5426404 |
Electrical circuit using low volume multilayer transmission line devices |
Jun. 20, 1995 |
| 5309125 |
Compact delay line formed of concentrically stacked, helically grooved, cylindrical channel-line structure |
May. 3, 1994 |
| 5231330 |
Digital helix for a traveling-wave tube and process for fabrication |
Jul. 27, 1993 |
| 5173669 |
Slow-wave structure having block supported helix structure |
Dec. 22, 1992 |
| 5132591 |
Travelling-wave tuve provided with a brazed "T" shaped helix delay line |
Jul. 21, 1992 |
| 4894628 |
Transmission delay line and method of manufacture |
Jan. 16, 1990 |
| 4887054 |
Compact microstrip latching reciprocal phase shifter |
Dec. 12, 1989 |
| 4851736 |
Helical waveguide to rectangular waveguide coupler |
Jul. 25, 1989 |
| 4785268 |
Dielectric waveguide delay line |
Nov. 15, 1988 |
| 4758807 |
Distributed constant type electromagnetic delay line |
Jul. 19, 1988 |
| 4729510 |
Coaxial shielded helical delay line and process |
Mar. 8, 1988 |
| 4572985 |
Traveling wave tube comprising a sleeve cut with grooves and its manufacturing process |
Feb. 25, 1986 |
| 4546332 |
Variable delay line |
Oct. 8, 1985 |
| 4465987 |
Ring-bar slow wave structure and fabrication method |
Aug. 14, 1984 |
| 4459562 |
Dielectric based submillimeter backward wave oscillator circuit |
Jul. 10, 1984 |
| 4422012 |
Ladder supported ring bar circuit |
Dec. 20, 1983 |
| 4349791 |
Slow wave coupling circuit |
Sep. 14, 1982 |
| 4313474 |
Method for the manufacture of a microwave delay line and microwave delay line obtained by this method |
Feb. 2, 1982 |
| 4311991 |
Acoustic transmission member |
Jan. 19, 1982 |
| 4308621 |
Radio interference bucker apparatus |
Dec. 29, 1981 |
| 4263532 |
Microwave delay line |
Apr. 21, 1981 |
| 4178533 |
Microwave delay line for travelling wave tube |
Dec. 11, 1979 |
| 4162464 |
Delay line |
Jul. 24, 1979 |
| 4115721 |
Traveling wave device with unific composite metal dielectric helix and method for forming |
Sep. 19, 1978 |
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