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. 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

Units

Min.

Typ.

Max.

Center Frequency (Fc)

MHz

3830

Pass Bandwidth

MHz

90

100

Insertion Loss of Pass Bandwidth

dB

1.8 (1)

3

Amplitude Variation(2)

3780 – 3880 MHz

dB ptp

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 of Pass Bandwidth

11

16(1)

Operating Temperature

°C

-40

85

Load Impedence

Ohm

50

Power Handling – CW

dBm

 

27

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