Avago Introduces FBAR Technology-Based Bandpass Filters

WiMAX (News - Alert) services are still evolving and emerging in a world which dominated by cellular mobile networks. WiMAX technologies have found great encouragement from operators and equipment manufacturers as well as governments and regulators.

Avago Technologies, a supplier of analog interface components for communications, industrial and consumer applications, has announced two advanced Film Bulk Acoustic Resonator (FBAR) technology-based bandpass filters for next generation 4G WiMAX/LTE (News - Alert) handsets, data cards and access points.

The Avago ACPF-7024 and ACPF-7025 are a pair of highly selective bandpass filters that enable cellular phones to offer simultaneous operation of next generation 4G WiMAX/LTE voice communications and WiFi (News - Alert)/Bluetooth data networks without compromising either voice or data quality of service.

This filter solves the design problem of enabling concurrent operation of WiFi and/or Bluetooth standards with other wireless standards - such as 2.5 GHz WiMAX, PCS, and LTE Bands 7 and 40 - without performance degradation due to adjacent radio interference.

The ACPF-7024 is a 2400-2482 MHz WiFi/Bluetooth bandpass filter designed for use in the 2.4 GHz ISM band and features over 40 dB of attenuation to interfering signals. Avago’s ACPF-7025 is a miniature 2496 - 2690 MHz WiMAX bandpass filter. The ACPF-7025 allows a WiMAX transceiver to coexist and operate alongside WiFi and/or Bluetooth transmitters.

Both the ACPF-7024 and ACPF-7025 use Avago Technologies’ proprietary Film Bulk Acoustic Resonator (FBAR) technology that makes ultra-small, high-Q filters possible at a fraction of their usual size.

According to a release, the ACPF-7024 and ACPF-7025 are assembled into molded chip-on-board modules with a compact size of 2.5 x 2.5 mm and 2.0 x 1.6 mm respectively. The applications for both the filters include 4G/LTE cellular and 802.11 b/g/n WiLAN/WiFi and Bluetooth data communications in handsets and portable communication devices such as laptops, netbooks and tablet devices.