AKF-1938 3.8 GHz IF BAW Filter

Akoustis’ AKF-1938 is a high performance, ultra-small passband BAW Filter targeting 5G infrastructure, radar and general-purpose applications. The 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. The 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 +30dBm
  • Low insertion loss 100 MHz passband filter
  • Performance -40 C to +85C
  • Hermetically sealed

Parameters

Parameter

Units

Min.

Typ.

Max.

Center Frequency (Fc)

MHz

3830

Pass Bandwidth

MHz

90

100

Insertion Loss of Pass Bandwidth

dB

1.8 (1)

3.5

Amplitude Variation(2)

3780 – 3880 MHz

dB ptp

0.8

1.0

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 of Pass Bandwidth

11

16(1)

Operating Temperature

°C

-40

85

Load Impedence

Ohm

50

Note:
1. S-parameter averaged over specified pass band frequency at room
2. Amplitude ripple defined peak-to-valley difference over specified pass band

Application Notes

Images & Diagrams