MIL-STD-220 Method Of Insertion Loss MeasurementThis standard covers a method of measuring, in a 50 ohm system, the insertion loss of feed-through suppression capacitors, and of single and multiple circuit radio frequency RF filters at frequencies up to 10 gigahertz GHz.

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MIL-STD-220C

CONTENTS

PARAGRAPH PAGE

FOREWORD……………………………………………………………………………… ii

1. SCOPE………………………………………………………………………………………… 1

1.1	Scope………………………………………………………………………………………..	1
2.	APPLICABLE DOCUMENTS………………………………………………………………..	1
2.1	General………………………………………………………………………………………	1
2.2	Government documents……………………………………………………………………	1
2.2.1	Specifications, standards, and handbooks………………………………………………	1
2.3	Order of precedence……………………………………………………………………….	1
3.	DEFINITIONS………………………………………………………………………………….	2
3.1	Insertion loss………………………………………………………………………………..	2
4.	GENERAL REQUIREMENTS……………………………………………………………….	3
4.1	Test setup…………………………………………………………………………………..	3
4.1.1	Shielding test……………………………………………………………………………….	3
4.2	Test equipment…………………………………………………………………………….	3
4.2.1	Output signal……………………………………………………………………………….	3
4.2.1.1	Measuring a filter.......................................................................................................	3
4.2.1.2	Error correction for accurate passband measurements...........................................	3
4.2.1.3	Sources and types of errors ....................................................................................	5
4.2.2	Coaxial lines, connectors, and switches…………………………………………………	5
4.2.3	Isolation attenuators……………………………………………………………………….	5
4.2.4	RF-dc insertion loss measuring equipment assembly………………………………….	5
4.2.5	Standard attenuator………………………………………………………………………..	5
5.	METHOD OF TEST…………………………………………………………………………..	8
5.1	Test conditions……………………………………………………………………………..	8
5.2	Test procedure……………………………………………………………………………..	8
5.2.1	Preliminary operation………………………………………………………………………	8
5.2.2	Method of measurement…………………………………………………………………..	8
6.	NOTES………………………………………………………………………………………….	9
6.1	Intended use…………………………………………………………………………………	9
6.2	Subject term (key word) listing…………………………………………………………….	9
6.3	Changes from previous issue……………………………………………………………..	9
	APPENDIX A - Analysis of Filter Measurements...........................................................	10
A.1	Discussion..................................................................................................................	10
A.1.1	Elements....................................................................................................................	10
A.1.2	Details........................................................................................................................	10
A.2	Test condition.............................................................................................................	11

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