Coupler

Bi-directional coupler integrated circuit (IC) for radio frequency (RF) calibration and power control

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Overview

Infineon's bi-directional coupler BGC100GN6 is used as a part of power control and antenna tuning loops. Cellular RF front-ends incorporate bi-directional couplers in the main transmitted path to sense RF power propagating in a particular direction (transmitted or reflected from the antenna). The PA can be dynamically controlled, and the antenna can be tuned based on the coupler's output.

Key Features

  • Bi-directional coupler
  • Designed for cellular applications
  • Enables closed-loop power control
  • GPIO control interface
  • Low insertion loss
  • High directivity

Products

About

BGC100GN6 switchable wideband directional coupler IC

The BGC100GN6 bi-directional coupler IC is designed for cellular RF front-end applications. The device contains a bi-directional coupler operating in one or multiple bands within the 0.6 GHz to 2.7 GHz frequency range. The coupled output contains a low-pass filter for 5 GHz ISM blocker suppression. The coupler offers low insertion loss and high directivity. It is controlled via a GPIO pin. No external power supply blocker or RF decoupling capacitors are required. The device has a very small size of 1.1 x 0.7 mm2 and a maximum height of 0.4 mm.

BGC100GN6 provides improvements in cellular-to-Wi-Fi signal integrity

The BGC100GN6 IC contains a bi-directional coupler, a direction switch for selecting the coupled or isolated port, and a filter for 5 GHz ISM blocker suppression.

A filter for suppressing the 5 GHz Wi-Fi signal prevents the feedback receiver (FR) from mixing down the Wi-Fi blockers and distorting the cellular feedback signal. An integrated Wi-Fi filter eliminates the need (or significantly relaxes the requirements) for a discrete low-pass filter in the coupled RF feedback path.

Download the whitepaper for more information
Integration into the RF front-end and board layout recommendations

The switchable coupler IC BGC100GN6 is a compact, high-dynamic-range (over 60 dB) device. Care must be taken during the design-in phase to preserve the RF performance of the device and achieve specified values for directivity and Wi-Fi suppression on the system level. 

The application note "Switchable wideband directional coupler IC BGC100GN6" provides guidelines and recommendations for integrating the coupler IC into cellular RF front-end applications. The recommendations include information about:

  • Preferred arrangement of RF pins of the BGC100GN6 IC in the main transmitted path of a RF front-end
  • Layout recommendations for an application board to achieve best system-level RF performance
Learn more in the application note

BGC100GN6 switchable wideband directional coupler IC

The BGC100GN6 bi-directional coupler IC is designed for cellular RF front-end applications. The device contains a bi-directional coupler operating in one or multiple bands within the 0.6 GHz to 2.7 GHz frequency range. The coupled output contains a low-pass filter for 5 GHz ISM blocker suppression. The coupler offers low insertion loss and high directivity. It is controlled via a GPIO pin. No external power supply blocker or RF decoupling capacitors are required. The device has a very small size of 1.1 x 0.7 mm2 and a maximum height of 0.4 mm.

BGC100GN6 provides improvements in cellular-to-Wi-Fi signal integrity

The BGC100GN6 IC contains a bi-directional coupler, a direction switch for selecting the coupled or isolated port, and a filter for 5 GHz ISM blocker suppression.

A filter for suppressing the 5 GHz Wi-Fi signal prevents the feedback receiver (FR) from mixing down the Wi-Fi blockers and distorting the cellular feedback signal. An integrated Wi-Fi filter eliminates the need (or significantly relaxes the requirements) for a discrete low-pass filter in the coupled RF feedback path.

Download the whitepaper for more information

Integration into the RF front-end and board layout recommendations

The switchable coupler IC BGC100GN6 is a compact, high-dynamic-range (over 60 dB) device. Care must be taken during the design-in phase to preserve the RF performance of the device and achieve specified values for directivity and Wi-Fi suppression on the system level. 

The application note "Switchable wideband directional coupler IC BGC100GN6" provides guidelines and recommendations for integrating the coupler IC into cellular RF front-end applications. The recommendations include information about:

  • Preferred arrangement of RF pins of the BGC100GN6 IC in the main transmitted path of a RF front-end
  • Layout recommendations for an application board to achieve best system-level RF performance
Learn more in the application note

Documents

Documents

Developer community

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