RF and Microwave Filters and Products Catalog June 2014 | Page 7

AEI BANDPASS FILTERS
SAW BANDPASS FILTERS
General Description: Surface acoustic wave (SAW) bandpass filters employ the piezoelectric
effect to convert an electromagnetic signal into an acoustic signal and vice versa. SAW bandpass
filters provide sharp cut-off, very linear phase characteristics, high stability, and are highly
reliable. Electrical signals are converted to a mechanical wave in a device constructed of a
piezoelectric crystal or ceramic, and the wave is delayed as it propagates across the device before
being converted back to an electrical signal. The delayed outputs are recombined to produce a
direct analog implementation of a finite impulse-response filter. AEI offers a very broad range of
SAW bandpass filters that can be specified for operating frequencies from 4.75 MHz up to 6 GHz.
They are extremely compact surface-mount devices and typically measure 2 x 2 x 2 mm, and can
be as long as 50 mm in length.
Freq. Range
(MHz)

3-dB Bandwith
(%)

VSWR
(typ.)

Impedance
(Ohms)

Max Input
Power (W)

Package Styles

Operating Temp.
(⁰C)

Shock

Vibrations

4.75 to
6000

2 to 10

1.5:1

50

0.5

SMT

-45 to +85

30 G, 11 ms

10 G, 200 MHz

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AEI DUPLEXERS
Anatech Electronics (AEI) duplexers are custom products that combine receive and transmit channels to allow a single
antenna to be used, as well as splitting the received RX, and TX signals. They are available with operating frequencies of 1
MHz to 17 GHz and in 2 to 15 sections with isolation up to 100 dB, and RF power handling ability of 500 W or more.
Technologies used are cavity, ceramic, LC, and SAW.
Duplexers designed specifically for commercial and military wireless applications, such as GSM, PCS, WCDMA, LTE, and
Wi-Fi, as well as multi-band applications are available in custom and standard models.
AEI will match the specification, and form-fit factor of duplexers from other manufacturers as well. AEI duplexers can be
manufactured with SMA, Type-N, BNC, TNC, SMC, SMB, 7/16 connectors. Duplexers are also available in surface mount,
PC mount, and drop-in style enclosures. Special packaging and connectors can also be specified.

CAVITY DUPLEXERS
General Description: AEI cavity duplexers are available with 2 to 18 resonators and bandwidths
ranging from 3% to 100%. The resonator and cavity are silver plated for low insertion loss and
high selectivity. The cavity duplexers range in frequencies from 20 MHz to 20 GHz, and can
handle RF power inputs up to 500 W. Duplexers are available that can withstand hostile
environments encountered in outdoor installations. Standard designs use a 0.05-dB Chebyshev
response and other response types such as Butterworth and elliptic are also used depending on
the performance. They range in length from 1.5 to more than 10 in. depending on the insertion
loss, power handling, and center frequency requirements. The duplexers are available in surface
mount, connectorized, PC mount, drop-in, as well as special configurations specified by the
requirements.
Freq. Range
(MHz)
20 MHz to
20 GHz

3-dB
Bandwidth
(%)

Number of
Sections

Isolation
(dB)

VSWR (typ.)

Impedance
(Ohms)

Max Input
Power (W)

0.7 to 50

2 to 13

50 to 120

1.5:1

50

500

Package Styles
Connectorized, PC
Mount, Drop-In

Operating Temp.
(⁰C)
-55 to +85

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