RF Filters

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We offer RF filters for aircraft, aerospace, medical, power plant control, traffic signal, transportation equipment and a wide range of other applications.

Radio frequency (RF) and microwave filters represent a class of electronic filter, designed to operate on signals in the megahertz to gigahertz frequency ranges (medium frequency to extremely high frequency). This frequency range is used by most broadcast radio, television, and wireless communication equipment (mobile phones, Wi-Fi, etc.).

Accordingly, most RF and microwave devices will include some kind of filtering on the signals transmitted or received. Such filters are commonly used as building blocks for duplexers and diplexers to combine or separate multiple frequency bands.

What does an RF filter do?

Filters fulfil one of the following functions:
  1. RF band-pass filter: selects only a desired band of frequencies
  2. RF band-stop filter: eliminates an undesired band of frequencies
  3. RF low-pass filter: allows only frequencies below a cutoff frequency to pass
  4. RF high-pass filter: allows only frequencies above a cutoff frequency to pass

RF Filter types

There are many different types or models for RF filters. Below are some of the more commonly used forms.

Constant-k: The constant-k filter’s advantage lies in the ease of calculating values for the various components. This enables it to be simply designed with minimal theoretical knowledge about the mathematics, unlike many other filters. However, its performance does not quite match that of other filter types, although for many applications it is more than adequate.

Butterworth: This type of filter provides the maximum in band flatness, although it provides a lower stop-band attenuation than a Chebyshev filter. However, it is also able to provide better group delay performance, and hence lower overshoot.

Bessel: This filter provides the optimum in-band phase response and therefore also provides the best step response. It is often used where signals incorporate square waves, etc as the shape is maintained best of all.

Chebyshev: This filter provides fast roll off after the cut off frequency is reached. However, this is at the expense of in-band ripple. The more in-band ripple that can be tolerated, the faster the roll off.

Elliptic: This filter, also known as the Cauer filter, has significant levels of in-band and out of band ripple, and as expected the higher the degree of ripple that can be tolerated, the steeper it reaches its ultimate roll off.
 
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BPF900A
BPF900A - Filter, Band Pass, 902MHz to 928MHz

23T4566

Filter, Band Pass, 902MHz to 928MHz

L-COM

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Band Pass -Pins 902MHz a 928MHz GSM, ISM, RFID, RF, SCADA - -
MLPF-WB55-01E3
MLPF-WB55-01E3 - RF Filter, 2.4GHz to 2.5GHz, Low Pass, Bluetooth, WLCSP-6

03AH2647

RF Filter, 2.4GHz to 2.5GHz, Low Pass, Bluetooth, WLCSP-6

STMICROELECTRONICS

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Low Pass 6Pins 2.4GHz to 2.5GHz Bluetooth WLCSP -
BPF24-801A
BPF24-801A - Bandpass Filter, 2.4GHz, 1 Channel, 802.11, WLAN, Rugged Aluminum Construction, N-Female Connector

23T4550

Bandpass Filter, 2.4GHz, 1 Channel, 802.11, WLAN, Rugged Aluminum Construction, N-Female Connector

L-COM

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Band Pass -Pins 2.4GHz 802.11, WLAN - -
2450LP14B100T
2450LP14B100T - LOW PASS FILTER, 2.45GHZ

41T1689

LOW PASS FILTER, 2.45GHZ

JOHANSON TECHNOLOGY

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Low Pass 6Pins 2.4GHz to 2.5GHz Bluetooth, ISM and 802.11, WLAN, ZigBee 0603 [1608 Metric] 0
748323024
748323024 - RF FILTER, BAND PASS, 2.4GHZ TO 2.5GHZ ROHS COMPLIANT: YES

75AJ2939

RF FILTER, BAND PASS, 2.4GHZ TO 2.5GHZ ROHS COMPLIANT: YES

WURTH ELEKTRONIK

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Band Pass 4Pins 2.4GHz to 2.5GHz RF, Wireless Communication Systems Like DECT, PACS, PHS, GSM, WLAN, Bluetooth 0805 [2012 Metric] WE-BPF
748323155
748323155 - RF FILTER, BAND PASS, 0805 ROHS COMPLIANT: YES

75AJ2941

RF FILTER, BAND PASS, 0805 ROHS COMPLIANT: YES

WURTH ELEKTRONIK

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Band Pass 4Pins 5.15GHz to 5.875GHz RF, Wireless Communication Systems Like DECT, PACS, PHS, GSM, WLAN, Bluetooth 0805 [2012 Metric] WE-BPF
748111009
748111009 - RF FILTER, LOW PASS, 908MHZ TO 928MHZ ROHS COMPLIANT: YES

75AJ2935

RF FILTER, LOW PASS, 908MHZ TO 928MHZ ROHS COMPLIANT: YES

WURTH ELEKTRONIK

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Low Pass 8Pins 908MHz to 928MHz RF, Wireless Communication Systems Like DECT, PACS, PHS, GSM, WLAN, Bluetooth 0805 [2012 Metric] WE-LPF
DEA100915LT-6319A1
DEA100915LT-6319A1 - RF FILTER, LOW PASS, 824MHZ TO 915MHZ ROHS COMPLIANT: YES

29AJ5129

RF FILTER, LOW PASS, 824MHZ TO 915MHZ ROHS COMPLIANT: YES

TDK

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2450BP15E0100E
2450BP15E0100E - FILTER, BANDPASS, 2.4GHZ

44W4474

FILTER, BANDPASS, 2.4GHZ

JOHANSON TECHNOLOGY

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Band Pass 0 2.4GHz to 2.5GHz 0 0805 [2012 Metric] 0
3600BP15M600E
3600BP15M600E - BAND PASS FILTER, 3.3-3.9GHZ, 0805

66AH5019

BAND PASS FILTER, 3.3-3.9GHZ, 0805

JOHANSON TECHNOLOGY

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Band Pass 4Pins 3.3GHz to 3.9GHz Cellular, WLAN, Bluetooth, Zigbee, ISM, RF/Microwave, Millimeter Wave, Fiber Optic 0805 [2012 Metric] -
DEA162450BT-1298A1
DEA162450BT-1298A1 - RF FILTER, BAND PASS, 2.4GHZ TO 2.5GHZ ROHS COMPLIANT: YES

29AJ5142

RF FILTER, BAND PASS, 2.4GHZ TO 2.5GHZ ROHS COMPLIANT: YES

TDK

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0 3Pins 0 0 0 0
MLPF-WB55-02E3
MLPF-WB55-02E3 - RF FILTER, LOW PASS, 2.4 TO 2.5GHZ, CSP ROHS COMPLIANT: YES

69AH1370

RF FILTER, LOW PASS, 2.4 TO 2.5GHZ, CSP ROHS COMPLIANT: YES

STMICROELECTRONICS

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748121055
748121055 - RF FILTER, LOW PASS, 5.15GHZ TO 5.875GHZ ROHS COMPLIANT: YES

75AJ2937

RF FILTER, LOW PASS, 5.15GHZ TO 5.875GHZ ROHS COMPLIANT: YES

WURTH ELEKTRONIK

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Low Pass 8Pins 5.15GHz to 5.875GHz RF, Wireless Communication Systems Like DECT, PACS, PHS, GSM, WLAN, Bluetooth 0805 [2012 Metric] WE-LPF
748125024
748125024 - RF FILTER, LOW PASS, 2.4GHZ TO 2.5GHZ ROHS COMPLIANT: YES

75AJ2938

RF FILTER, LOW PASS, 2.4GHZ TO 2.5GHZ ROHS COMPLIANT: YES

WURTH ELEKTRONIK

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Low Pass 8Pins 2.4GHz to 2.5GHz RF, Wireless Communication Systems Like DECT, PACS, PHS, GSM, WLAN, Bluetooth 0805 [2012 Metric] WE-LPF
DEA160960LT-5059A1
DEA160960LT-5059A1 - RF FILTER, LOW PASS, 698MHZ TO 960MHZ ROHS COMPLIANT: YES

29AJ5136

RF FILTER, LOW PASS, 698MHZ TO 960MHZ ROHS COMPLIANT: YES

TDK

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748112024
748112024 - RF FILTER, LOW PASS, 2.4GHZ TO 2.5GHZ ROHS COMPLIANT: YES

75AJ2936

RF FILTER, LOW PASS, 2.4GHZ TO 2.5GHZ ROHS COMPLIANT: YES

WURTH ELEKTRONIK

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Low Pass 6Pins 2.4GHz to 2.5GHz RF, Wireless Communication Systems Like DECT, PACS, PHS, GSM, WLAN, Bluetooth 0603 [1608 Metric] WE-LPF
BPF.24.01
BPF.24.01 - BAND PASS FILTER, 2.4 - 2.5 GHZ ROHS COMPLIANT: YES

36AJ3162

BAND PASS FILTER, 2.4 - 2.5 GHZ ROHS COMPLIANT: YES

TAOGLAS

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Band Pass - 2.4GHz to 2.5GHz UAV/Drone Antennas - Airvu
BPF.58.01
BPF.58.01 - BAND PASS FILTER, 5.48 - 5.85 GHZ ROHS COMPLIANT: YES

36AJ3163

BAND PASS FILTER, 5.48 - 5.85 GHZ ROHS COMPLIANT: YES

TAOGLAS

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Band Pass - 5.48GHz to 5.85GHz UAV/Drone Antennas - Airvu
6530BP44A1190
6530BP44A1190 - Filter, Band Pass, 4 Pins, 5.925GHz to 7.125GHz, SMD

83AH3565

Filter, Band Pass, 4 Pins, 5.925GHz to 7.125GHz, SMD

JOHANSON TECHNOLOGY

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Band Pass 4Pins 5.925GHz to 7.125GHz WiFi SMD -
DLF162500LT-5028A1
DLF162500LT-5028A1 - RF FILTER, LOW PASS, 2.4GHZ TO 2.5GHZ ROHS COMPLIANT: YES

29AJ5153

RF FILTER, LOW PASS, 2.4GHZ TO 2.5GHZ ROHS COMPLIANT: YES

TDK

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Low Pass 4Pins 2.4GHz to 2.5GHz Bluetooth, WLAN 0603 [1608 Metric] -
BPF24-401
BPF24-401 - Bandpass Filter, 2.4GHz, 1 Channel, 802.11, WLAN, Rugged Aluminum Construction, N-Female Connector

23T4544

Bandpass Filter, 2.4GHz, 1 Channel, 802.11, WLAN, Rugged Aluminum Construction, N-Female Connector

L-COM

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Band Pass -Pins 2.4GHz 802.11, WLAN - -
LFB182G45BG2D280
LFB182G45BG2D280 - RF FILTERS, BAND PASS, 2.45GHZ, 0603

69AC6040

RF FILTERS, BAND PASS, 2.45GHZ, 0603

MURATA

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0 6Pins 0 0 0 0
BPF24-814
BPF24-814 - Bandpass Filter, 2.4GHz, 14 Channel, 802.11, WLAN, Rugged Aluminum Construction, N-Female Connector

23T4560

Bandpass Filter, 2.4GHz, 14 Channel, 802.11, WLAN, Rugged Aluminum Construction, N-Female Connector

L-COM

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Band Pass -Pins 2.4GHz 802.11, WLAN - -
LQZ02HQ242A02E
LQZ02HQ242A02E - CHIP LC TRAP FILTER, 2.4-2.5GHZ, 01005 ROHS COMPLIANT: YES

65AH7962

CHIP LC TRAP FILTER, 2.4-2.5GHZ, 01005 ROHS COMPLIANT: YES

MURATA

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LC 2Pins 2.4GHz ~ 2.5GHz Aircraft, Aerospace, Medical, Power Plant Control, Traffic Signal & Transportation Equipment 01005 [0402 Metric] LQZ02HQ
748351124
748351124 - MULTILAYER CHIP BAND-PASS FILTER, 2.5GHZ ROHS COMPLIANT: YES

81AH9716

MULTILAYER CHIP BAND-PASS FILTER, 2.5GHZ ROHS COMPLIANT: YES

WURTH ELEKTRONIK

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