---
title: "Design a Tee-topology resistive attenuator pad. Given a desired attenuation in dB and characteristic impedance (default 50 ohm), computes the three resistor values for a symmetrical T-pad network. The Tee attenuator uses two series resistors (R1, R3) and one shunt resistor (R2). Commonly used in RF signal chains to reduce signal level while maintaining impedance match. Compare with attenuator_pi for Pi-pad topology."
method: POST
path: "/api/attenuator_tee"
tags: ["rf"]
---

# Design a Tee-topology resistive attenuator pad. Given a desired attenuation in dB and characteristic impedance (default 50 ohm), computes the three resistor values for a symmetrical T-pad network. The Tee attenuator uses two series resistors (R1, R3) and one shunt resistor (R2). Commonly used in RF signal chains to reduce signal level while maintaining impedance match. Compare with attenuator_pi for Pi-pad topology.

`POST /api/attenuator_tee`

## Request

- Base URL: `https://calc.engineer`
- URL: `https://calc.engineer/api/attenuator_tee`
- Auth: none declared

## Request body

- object
  - `attenuation_db` number, required: Desired attenuation in decibels (positive value)
  - `z0_ohm` number: Characteristic impedance in ohms (default 50)

## Response `200`

Computed result for attenuator_tee

- object
  - `result` object, required
    - `r1_ohm` number, required: Series resistor R1 (input side) in ohms
    - `r2_ohm` number, required: Shunt resistor R2 (middle) in ohms
    - `r3_ohm` number, required: Series resistor R3 (output side) in ohms
    - `topology` string, required: Attenuator topology identifier
  - `tool` string, required
  - `version` string, required
  - `computed_at` string, date-time, required
  - `chain` object, required
    - `feeds` unknown[]
      - unknown
    - `accepts_from` unknown[]
      - unknown

## Other responses

- `400`: Validation error or invalid JSON
- `404`: Tool not found

---

[API](https://skmtc.dev/calc/apis/calc-engineer-api.md) · [All operations](https://skmtc.dev/calc/apis/calc-engineer-api/llms.txt) · [OpenAPI document](https://skmtc.dev/calc/apis/calc-engineer-api/revisions/8830480ec488?raw)