RF Cafe - Fixed Pi & T Attenuators & Equations

--- RF Cafe Forums ---

- Search -

- Site Map -

There are more than 3,000 unique pages on RF Cafe for you to explore. Take your time and enjoy your visit. Thanks for stopping by!

Equations
& Tables

Contact RF Cafe

Special Interest
5CCG Radar	Museums
Amateur Radio	Nobel Prize
Astronomy	Quizzes
Blogs & Wikis	Quotations
Company Slogans	Slide Rules
Crosswords	Weather
Humor & Jokes	U.S. Defense
Mistakes & Myths	Vendor Logos

Standards

EMC / ESD / RFI

GSM / WCDMA

RFID / ZigBee

WLAN / WiMAX

RF Cafe Stuff

Calculator Workbook

Geocaching - Win!

RF Cascade Workbook

RF Stencils for Visio

RF Shapes for Word

RF Workbench

Smith Chart for Excel

Smith Chart for Visio

•−• ••−• −•−• •− ••−• •RF Cafe in Morse Code: Hear It

Fixed Pi and Tee Attenuators - Equations

See the online attenuator calculator here.

Fixed attenuators can be designed to have either equal or unequal impedances and to provide any amount of attenuation (theoretically) equal to or greater than the configuration's minimum attenuation - depending on the ratio of Z₁/Z₂. Attenuators with equal terminations have a minimum attenuation of 0 dB. Unequal terminations place a lower limit on the attenuation.

K = power in / power out, or in decibels = 10 * log (K) dB

, or in decibels K_MIN = 10 * log (K_min) dB

Unbalanced Tee (T) Attenuator	If Z₁ = Z₂, then:

Balanced Tee (T) Attenuator

Unbalanced Pi (p) Attenuator	If Z₁ = Z₂, then:

Balanced Pi (p) Attenuator

Note: Numbers shown are NOT total page views; they are
            unique IP addresses for each 24-hour period (i.e.,
            unique visitors). Typical page view counts are at least
            twice the reported unique visitor number.

RF Cafe
Erie, PA
(814) 833-1967

A Disruptive Web Presence™
GPS Coordinates:
N 42°04.577', W 080°11.757'