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PARALLEL COUPLED LINE ASSEMBLY FOR DIRECTIONAL COUPLING

IP.com Disclosure Number: IPCOM000005423D
Original Publication Date: 1980-Aug-01
Included in the Prior Art Database: 2001-Oct-10
Document File: 1 page(s) / 41K

Publishing Venue

Motorola

Related People

John Champlin: AUTHOR

Abstract

The parallel coupled line assembly for directional coupling shown in Figure 1 consists of two iden- tical injection molded dielectric sections 11, 12. These sections capture two parallel lines 13, 14 within a shielded enclosure 10, the bottom shield being the printed circuit board 15. Coupling and line im- pedances are defined by the precise process of the injection molding.

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Vol. 1 No. 1 August 1930

c, M MOTOROLA

Technlcal Disclosure Bulletin

_,

PARALLEL COUPLED LINE ASSEMBLY FOR DIRECTIONAL COUPLING

By John Champlin

   The parallel coupled line assembly for directional coupling shown in Figure 1 consists of two iden- tical injection molded dielectric sections 11, 12. These sections capture two parallel lines 13, 14 within a shielded enclosure 10, the bottom shield being the printed circuit board 15. Coupling and line im- pedances are defined by the precise process of the injection molding.

SHIELD \

10

@

12

15

;;Dze/ '. 0 '

 , / / ,
/ ' 01 Y STRIP LINES

-TO CIRCUIT

Figure 1.

Each transmission line is approximated as a trough line, with coupling being controlled by the spac- ing between lines.

   The two coupled lines are captured within two identical injection molded dielectrics and snapped in- to a single U-shaped shield cover. This assembly inserts into a printed circuit board as a component ready for wavelining.

This new five-part assembly offers the advantages of no soldering to assemble, no additional moun- ting device, coupling between lines is defined by injection molding and radiation is reduced.

0 Molorola,Inc.199o 26

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