RF and Microwave Filters and Products Catalog June 2014 | Page 5

AEI BANDPASS FILTERS
CERAMIC BANDPASS FILTERS
General Description: AEI’s ceramic bandpass filters deliver extremely high performance and
reliability and serve a broad array of applications from 400 to 6500 MHz. The advantages of
ceramic bandpass filters include low insertion loss, low cost, and small size. They can handle an
RF input power of about 5 to 8 W and are suitable for surface mounting. Their size depends on
the dielectric constant of the ceramic resonator (typically between 30 and 90), and the lower the
dielectric constant the larger the resonator and the better the temperature coefficient (and vice
versa). Ceramic bandpass filters can be made from discrete ceramic resonators or as a single
piece of ceramic material called a “monoblock” structure. Monoblock ceramic filters are best
suited for high-volume applications in which their higher manufacturing cost can be amortized
over a large number of devices. Other than reduced size, monoblock ceramic filters have
performance nearly identical to that of their discrete counterpart.
Freq.
Range
(MHz)

3-dB
Bandwidth
(%)

Number
of
Sections

VSWR
(typ.)

Impedance
(Ohms)

Max Input
Power (W)

400 to
6500

2 to 25

2 to 9

1.5:1

50

5

Package Styles
Surface mount
Connectorized

Operating
Temp. (⁰C)
-55 to +85

Shock

Vibration

30 G,
11 ms

10 G, 200 MHz

CONNECTORIZED CERAMIC BANDPASS FILTERS
General Description: Connectorized ceramic bandpass filters have the same performance and
characteristics as their SMT ceramic bandpass filter counterparts except that they are
conveniently enclosed inside a connectorized metal enclosure. This makes them usable in both
indoor and outdoor applications when housed in a weatherproof enclosure, and they can
withstand extreme environmental conditions. They are also a lower-cost alternative to cavity
filters in many applications. Connectorized ceramic bandpass filters can be used with antennas,
amplifiers, based stations, repeaters, or inserted in-line with receivers or transmitters. Operating
frequencies range from 400 MHz to 6500 MHz, and power handling ranges from 5 to 8 W. Their
enclosure size typically ranges from 0.75 to 3.5 in. depending on the size of the ceramic filter
within them. Connectorized ceramic filters can be fitted with SMA, Type-N, SMC, SMB, F, or TNC
connectors in any combination.
Freq.
Range
(MHz)

3-dB
Bandwidth
(%)

Number
of
Sections

VSWR
(typ.)

Impedance
(Ohms)

Max Input
Power (W)

Package Styles

Operating
Temp. (⁰C)

400 to
6500

2 to 25

2 to 9

1.5:1

50

5-8

Connectorized

-55 to +85

Shock

Vibration

30 G,
11 ms

10 G, 200 MHz

SURFACE MOUNT PC LC BANDPASS FILTERS
General Description: AEI surface-mount (SMT) PC bandpass filters are small, rugged designs that
are an excellent choice when cost and size are primary considerations. Their frequency range is
10 to 500 MHz, they can have between 3 and 6 sections, and can handle up to 20 W. Size
depends on operating frequency and number of sections and is typically between 1 and 2.5
inches. They are typically designed in a Chebyshev 0.05 dB type topology.
Freq.
Range
(MHz)

3-dB
Bandwidth
(%)

Number
of
Sections

VSWR
(typ.)

Impedance
(Ohms)

Max Input
Power (W)

Package Styles

Operating
Temp. (⁰C)

10 to
500

2 to 20

3 to 6

1.5:1

50

20

SMT

-55 to +85

Shock

Vibration

30 G,
11 ms

10 G, 200 MHz

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