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Method for Creating a Stripline Prototype

IP.com Disclosure Number: IPCOM000061230D
Original Publication Date: 1986-Jul-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Argyrakis, SN: AUTHOR [+2]

Abstract

A quick method for creating a stripline prototype is disclosed in which rivets are used for both connecting ground-signal planes and for providing passages for component leads. The method, as shown by the following example, includes: 1. Selecting the proper dimension of the printed circuit material by calculating the width (w) of the stripline required using the formula: w = .595 (4b/EXP(Z0 ER .5/60)) - 2.104t t = thickness of the stripline b = distance between component side 14 and ground plane 16 Z0 = the characteristic impedance ER = electric field intensity. 2. Laying out the circuit to be prototyped on one side of the double-sided circuit board 8, drawing a center line (CL) to provide alignment (as shown in Fig. 1) and punching all component lead holes. 3.

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Method for Creating a Stripline Prototype

A quick method for creating a stripline prototype is disclosed in which rivets are used for both connecting ground-signal planes and for providing passages for component leads. The method, as shown by the following example, includes: 1. Selecting the proper dimension of the printed circuit material by calculating the width (w) of the stripline required using the formula: w = .595 (4b/EXP(Z0 ER
.5/60)) - 2.104t t = thickness of the stripline b = distance between component side 14 and ground plane 16 Z0 = the characteristic impedance ER = electric field intensity. 2. Laying out the circuit to be prototyped on one side of the double-sided circuit board 8, drawing a center line (CL) to provide alignment (as shown in Fig. 1) and punching all component lead holes. 3. Cutting out stripline conductor 10 with a knife along the center line on (copper) signal plane 12 of double-sided board 8. The opposite side of the board is (copper) component side 14. (The copper foil on either side of the stripline conductor can be heated and then peeled off from the signal plane surface of the board. See Fig. 2.) 4. Connecting (copper) ground plane 16, on single-sided circuit board 9, to signal plane 12 of the double-sided board and securing the two boards together, e.g., at each of the corners with screws (18, 20) and nuts, as shown in Fig. 2. (All component lead holes should be drilled through both boards (8 and 9). The copper foil immediately...