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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DEA075150HT-8036A1
DEA075150HT-8036A1 - RF Filter, High Pass, 5.15 GHz to 5.85 GHz, 0202

3650676

RF Filter, High Pass, 5.15 GHz to 5.85 GHz, 0202

TDK

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High Pass 4Pins 5.15GHz to 5.85GHz WLAN 0202 [0605 Metric] DEA Series
MLPF-WB55-01E3
MLPF-WB55-01E3 - RF Filter, 2.4GHz, Low Pass, Impedance Matched To STM32WB55

3106011

RF Filter, 2.4GHz, Low Pass, Impedance Matched To STM32WB55

STMICROELECTRONICS

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Low Pass 6Pins 2.4GHz to 2.5GHz Bluetooth WLCSP -
HHM22137A2
HHM22137A2 - RF Filter, Coupler, 698 MHz to 2.62 GHz, 0603

3650673

RF Filter, Coupler, 698 MHz to 2.62 GHz, 0603

TDK

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Coupler 6Pins 698MHz to 2.62GHz WLAN 0603 [1608 Metric] HHM Series
DEA165550BT-2230C2-H
DEA165550BT-2230C2-H - RF Filter, Band Pass, 5.15 GHz to 5.95 GHz, 0603

3650699

RF Filter, Band Pass, 5.15 GHz to 5.95 GHz, 0603

TDK

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Band Pass 3Pins 5.15GHz to 5.95GHz WLAN 0603 [1608 Metric] DEA Series
LFD21868MMF1D386
LFD21868MMF1D386 - RF Filter, Balun, 891.5 Mhz,3W, -40℃ to 85℃, 0805 [2012 Metric], LFD21 Series

2913685

RF Filter, Balun, 891.5 Mhz,3W, -40℃ to 85℃, 0805 [2012 Metric], LFD21 Series

MURATA

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- 10Pins 891.5 MHz ZigBee 0805 [2012 Metric] LFD Series
DEA105425BT-1293A1
DEA105425BT-1293A1 - RF Filter, Band Pass, 4.9 GHz to 5.95 GHz, 0402

3650680

RF Filter, Band Pass, 4.9 GHz to 5.95 GHz, 0402

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Band Pass - 4.9GHz to 5.95GHz WLAN 0402 [1005 Metric] -
HHM22139A2
HHM22139A2 - RF Filter, Coupler, 698 MHz to 2.62 GHz, 0603

3650675

RF Filter, Coupler, 698 MHz to 2.62 GHz, 0603

TDK

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Coupler 6Pins 698MHz to 2.62GHz WLAN 0603 [1608 Metric] HHM Series
DEA142450BT-3028A1
DEA142450BT-3028A1 - RF Filter, Band Pass, 2.4 GHz to 2.5 GHz, 0604

3650682

RF Filter, Band Pass, 2.4 GHz to 2.5 GHz, 0604

TDK

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Band Pass 5Pins 2.4GHz to 2.5GHz Bluetooth, WLAN 0604 [1411 Metric] DEA Series
DEA162450BT-1295A1
DEA162450BT-1295A1 - RF Filter, Band Pass, 2.4 GHz to 2.5 GHz, 0603

3650690

RF Filter, Band Pass, 2.4 GHz to 2.5 GHz, 0603

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Band Pass 4Pins 2.4GHz to 2.5GHz Bluetooth, WLAN 0603 [1608 Metric] DEA Series
DBP.1567.S.A.50
DBP.1567.S.A.50 - Band Pass Filter, 1567.5MHz, GPS, GLONASS, BeiDou, SMD-2

4470181

Band Pass Filter, 1567.5MHz, GPS, GLONASS, BeiDou, SMD-2

TAOGLAS

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Band Pass 2Pins 1567.5MHz GPS, GLONASS, BeiDou SMD Airvu Filter Series
DEA163500LT-5106C1
DEA163500LT-5106C1 - RF Filter, 2647MHz to 3500MHz, Low Pass, 0603 [1608 Metric], LTE, UMTS, 5G

4354193

RF Filter, 2647MHz to 3500MHz, Low Pass, 0603 [1608 Metric], LTE, UMTS, 5G

TDK

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Low Pass 6Pins 2647MHz to 3500MHz LTE, UMTS, 5G 0603 [1608 Metric] DEA Series
BPF900A
BPF900A - Bandpass Filter, 902MHz to 928MHz, GSM, ISM, RFID, RF, SCADA, Rugged Aluminium Construction

4214801

Bandpass Filter, 902MHz to 928MHz, GSM, ISM, RFID, RF, SCADA, Rugged Aluminium Construction

L-COM

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Band Pass - 902MHz to 928MHz GSM, ISM, RFID, RF, SCADA - -
BP1206A1500ANTR/500
BP1206A1500ANTR/500 - Band Pass Filter, 1.25 GHz to 1.75 GHz, 1206 [3216 Metric], 4 Pins, BP Series

4661351

 
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Band Pass Filter, 1.25 GHz to 1.75 GHz, 1206 [3216 Metric], 4 Pins, BP Series

KYOCERA AVX

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Band Pass 4Pins 1.25GHz to 1.75GHz Antenna Matching, Mobile Communications, Radar, Satellite TV Receivers, Vehicle Location Systems 1206 [3216 Metric] BP Series
DEA162025LT-5003C3
DEA162025LT-5003C3 - RF Filter, Low Pass, 880 MHz to 2.025 GHz, 0603

3650685

RF Filter, Low Pass, 880 MHz to 2.025 GHz, 0603

TDK

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Low Pass 6Pins 880MHz to 2.025GHz GSM, LTE, UMTS, 5G 0603 [1608 Metric] DEA Series
DEA165375BT-2122A1
DEA165375BT-2122A1 - RF Filter, Band Pass, 4.9 GHz to 5.85 GHz, 0603

3650697

RF Filter, Band Pass, 4.9 GHz to 5.85 GHz, 0603

TDK

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Band Pass 4Pins 4.9GHz to 5.85GHz WLAN 0603 [1608 Metric] DEA Series
0915LP15B026E
0915LP15B026E - Filter, Low Pass, 8 Pins, 902MHz a 928MHz, 0805 [2012 Metric]

1885520

Filter, Low Pass, 8 Pins, 902MHz a 928MHz, 0805 [2012 Metric]

JOHANSON TECHNOLOGY

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Low Pass 8Pins 902MHz to 928MHz - 0805 [2012 Metric] -
BPF.58.01
BPF.58.01 - Filter, Band Pass, 5.48 GHz to 5.85 GHz, 2.1 dB, 50 Ohm

3678601

Filter, Band Pass, 5.48 GHz to 5.85 GHz, 2.1 dB, 50 Ohm

TAOGLAS

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Band Pass - 5.48GHz to 5.85GHz UAV/Drone Antennas - -
LTC1566-1CS8#PBF
LTC1566-1CS8#PBF - Lowpass Filter, Continuous Time, 7th Order, 2.3 MHz, 0 to 70 °C, NSOIC-8

4016295

Lowpass Filter, Continuous Time, 7th Order, 2.3 MHz, 0 to 70 °C, NSOIC-8

ANALOG DEVICES

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Low Pass 8Pins 2.3MHZ Antialiasing, Communication, Smoothing/Reconstruction Filters, WCDMA Basestations NSOIC -
748351124
748351124 - RF Filter, Multilayer Chip Band-Pass, 2.4 GHz to 2.5 GHz, 1008

3517042

RF Filter, Multilayer Chip Band-Pass, 2.4 GHz to 2.5 GHz, 1008

WURTH ELEKTRONIK

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Band Pass - 2.4GHz to 2.5GHz RF, Wireless Communication Systems Like DECT, PACS, PHS, GSM, WLAN, Bluetooth 1008 [2520 Metric] WE-BPF Series
BPF.24.01
BPF.24.01 - Filter, Band Pass, 2.4 GHz to 2.5 GHz, 1.3 dB, 50 ohm

3678599

Filter, Band Pass, 2.4 GHz to 2.5 GHz, 1.3 dB, 50 ohm

TAOGLAS

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Band Pass - 2.4GHz to 2.5GHz UAV/Drone Antennas - -
2450BP15E0100E
2450BP15E0100E - Filter, Band Pass, 4 Pins, 2.4GHz to 2.5GHz, 0805 [2012 Metric]

2148528

Filter, Band Pass, 4 Pins, 2.4GHz to 2.5GHz, 0805 [2012 Metric]

JOHANSON TECHNOLOGY

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Band Pass 4Pins 2.4GHz to 2.5GHz - 0805 [2012 Metric] -
MLPF-WB55-02E3
MLPF-WB55-02E3 - RF FILTER, LOW PASS, 2.4 TO 2.5GHZ, CSP

3387267

RF FILTER, LOW PASS, 2.4 TO 2.5GHZ, CSP

STMICROELECTRONICS

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Low Pass - 2.4GHz ~ 2.5GHz Bluetooth 5, IEEE 802.15.4, OpenThread, Optimized for STM32WB55Vx, Zigbee CSP -
0868LP15A020E
0868LP15A020E - Filter, Low Pass, 8 Pins, 858MHz to 878MHz, 0805 [2012 Metric]

2148529

Filter, Low Pass, 8 Pins, 858MHz to 878MHz, 0805 [2012 Metric]

JOHANSON TECHNOLOGY

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Low Pass 8Pins 858MHz to 878MHz - 0805 [2012 Metric] -
2450LP14B100T
2450LP14B100T - Filter, Low Pass, 6 Pins, 2.4GHz to 2.5GHz, 0603 [1608 Metric]

1885521

Filter, Low Pass, 6 Pins, 2.4GHz to 2.5GHz, 0603 [1608 Metric]

JOHANSON TECHNOLOGY

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Low Pass 6Pins 2.4GHz to 2.5GHz Bluetooth, ISM and 802.11, WLAN, ZigBee 0603 [1608 Metric] -
DEA162450BT-1260B2
DEA162450BT-1260B2 - RF Filter, Band Pass, 2.4 GHz to 2.5 GHz, 0603

3650688

RF Filter, Band Pass, 2.4 GHz to 2.5 GHz, 0603

TDK

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Band Pass 4Pins 2.4GHz to 2.5GHz Bluetooth, WLAN 0603 [1608 Metric] DEA Series