AKF-1938 3.83GHz Bandpass BAW Filter

Akoustis’ AKF-1938 is a high performance, ultra-small passband BAW Filter targeting 5G infrastructure, radar and general-purpose applications. AKF-1938 utilizes Akoustis’ XBAW technology which provides leading RF filter performance. This BAW filter provides 100 MHz bandwidth, low insertion loss at 3.8GHz and high out of band attenuation. AKF-1938 is assembled in hermetic sealed package and is compatible with high volume, lead-free SMT soldering processes.

Features

  • Ultra small form factor 2.5mm x 2.0mm x 0.8mm
  • Single ended 50 Ohm Ant, Tx/Rx ports
  • High out of band attenuation
  • High power handling, maximum +27dBm
  • Low insertion loss 100 MHz passband filter
  • Performance -40 C to +85C
  • Hermetically sealed

Parameters

Parameter Conditions Units Min. Typ. Max.
Center Frequency (Fc) MHz 3830
Pass Bandwidth MHz 90 100
Insertion Loss

3780 – 3880 MHz

dB 1.8(1) 3
Amplitude Variation(2)

3780 – 3880 MHz

dB 1.0 1.5
Attenuation

0 – 2880 MHz

dB 40 42

2880 – 3720 MHz

dB 45 50

3960 – 4000 MHz

dB 45 50

4000 – 4800 MHz

dB 45 50

4800 – 7640 MHz

dB 40 45

7640 – 9500 MHz

dB 40 45
Return Loss

3780 – 3880 MHz

dB 11 16(1)
Load Impedance Ω 50
Power Handling

5G NR, 100 MHz,

PAR 7.8dB

dBm 27
2nd Harmonic

Po=28dBm (25°C)

dBm/MHz -38

1. Averaged over specified frequency at room temperature
2. Amplitude ripple defined peak-to-valley difference over specified pass band

Application Notes

Images & Diagrams