Electronics World articles Popular Electronics articles QST articles Radio & TV News articles Radio-Craft articles Radio-Electronics articles Short Wave Craft articles Wireless World articles Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors LinkedIn Crosswords Engineering Humor Kirt's Cogitations RF Engineering Quizzes Notable Quotes Calculators Education Engineering Magazine Articles Engineering software RF Cafe Archives Magazine Sponsor RF Cafe Sponsor Links Saturday Evening Post NEETS EW Radar Handbook Microwave Museum About RF Cafe Aegis Power Systems Alliance Test Equipment Centric RF Empower RF ISOTEC Reactel RF Connector Technology San Francisco Circuits Anritsu Amplifier Solutions Anatech Electronics Axiom Test Equipment Conduct RF Copper Mountain Technologies Exodus Advanced Communications Innovative Power Products KR Filters LadyBug Technologies Rigol TotalTemp Technologies Werbel Microwave Windfreak Technologies Wireless Telecom Group Withwave RF Cafe Software Resources Vintage Magazines RF Cafe Software WhoIs entry for RF Cafe.com Thank you for visiting RF Cafe!
Werbel Microwave (power dividers, couplers)

Crane Aerospace Electronics Microwave Solutions: Space Qualified Passive Products

Please Support RF Cafe by purchasing my  ridiculously low−priced products, all of which I created.

RF Cascade Workbook for Excel

RF & Electronics Symbols for Visio

RF & Electronics Symbols for Office

RF & Electronics Stencils for Visio

RF Workbench

T-Shirts, Mugs, Cups, Ball Caps, Mouse Pads

These Are Available for Free

Espresso Engineering Workbook™

Smith Chart™ for Excel

Innovative Power Products Couplers

Lumped / Distributed Transmission Line Element Conversions

When designing with transmission line elements, whether with microstrip, stripline, waveguide, or coaxial cable, it is sometimes necessary to create lumped element equivalents for shunt and series capacitors and inductors.

These formulas provide the conversion. Keep in mind that the conversions only hold exactly at one frequency, ω. Angles, θ, are portions of a full wavelength at the desired frequency.

Inductor Shunted to Ground
RF Cafe - Lumped inductor shunt inductor RF Cafe - Distributed inductor shunt to ground equivalent
Capacitor Shunted to Ground
RF Cafe - Lumped element capacitor to ground RF Cafe - Distributed element open stub equivalent
Parallel LC Shunted to Ground
A 90° transmission line shorted at the far end acts like a parallel LC tank circuit. To behave similarly, the reactance of the tank inductor will be equal to 4/π times the line impedance.
RF Cafe - Lumped element parallel LC tank to ground RF Cafe - Distributed element parallel LC tank to ground equivalent
Series LC In Series
RF Cafe - Lumped element series LC RF Cafe - Distributed element series LC
Series Inductor
RF Cafe - Lumped element series inductor RF Cafe - Distributed element series inductor equivalent
Shunt Capacitor
RF Cafe - Lumped element shunt capacitor RF Cafe - Distributed element series component equivalent
Series LC Shunted to Ground
A 90° transmission line left open at the far end acts like a series LC circuit. To behave similarly, the reactance of the tank inductor will be equal to π/4 times the line impedance.
RF Cafe - Lumped element series LC tank to ground RF Cafe - Lumped element series LC tank to ground equivalent

Information originated from "HF Filter Design and Computer Simulation

Innovative Power Products Couplers
LadyBug RF Power Sensors

Windfreak Technologies Frequency Synthesizers - RF Cafe

Axiom Test Equipment - RF Cafe