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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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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3517042RL in Re-reel

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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
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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- - - - - Multicomp Pro RJ45 Adapter
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 Multicomp Pro RJ45 Adapter
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

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- 10Pins 891.5 MHz ZigBee 0805 [2012 Metric] -
748351124
748351124 - RF Filter, Multilayer Chip Band-Pass, 2.4 GHz to 2.5 GHz, 1008

3517042RL

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
MLPF-WB55-02E3
MLPF-WB55-02E3 - RF FILTER, LOW PASS, 2.4 TO 2.5GHZ, CSP

3387267RL

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

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Low Pass - 2.4GHz ~ 2.5GHz Bluetooth 5, IEEE 802.15.4, OpenThread, Optimized for STM32WB55Vx, Zigbee CSP Multicomp Pro RJ45 Adapter
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

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Low Pass 6Pins 2.4GHz to 2.5GHz Bluetooth WLCSP Multicomp Pro RJ45 Adapter
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 - Airvu
DLF162500LT-5028A1
DLF162500LT-5028A1 - RF Filter, Low Pass, 2.4 GHz to 2.5 GHz, 0603

3650703

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

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Low Pass 4Pins 2.4GHz to 2.5GHz Bluetooth, WLAN 0603 [1608 Metric] Multicomp Pro RJ45 Adapter
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

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Band Pass - 2.4GHz to 2.5GHz UAV/Drone Antennas - Airvu
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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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]

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DEA102700LT-6307A2
DEA102700LT-6307A2 - RF Filter, Low Pass, 2.4 GHz to 2.7 GHz, 0402

3650678

RF Filter, Low Pass, 2.4 GHz to 2.7 GHz, 0402

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Low Pass - 2.4GHz to 2.7GHz Bluetooth, LTE, UMTS, WLAN, WiMAX, 5G 0402 [1005 Metric] DEA
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

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Band Pass - 2.4GHz to 2.5GHz Bluetooth, WLAN 0603 [1608 Metric] Multicomp Pro RJ45 Adapter
HHM22137A2
HHM22137A2 - RF Filter, Coupler, 698 MHz to 2.62 GHz, 0603

3650673

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

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Coupler - 698MHz to 2.62GHz WLAN 0603 [1608 Metric] HHM
DEA105150HT-8044A1
DEA105150HT-8044A1 - RF Filter, High Pass, 5.15 GHz to 5.95 GHz, 0402

3650679

RF Filter, High Pass, 5.15 GHz to 5.95 GHz, 0402

TDK

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High Pass - 5.15GHz to 5.95GHz WLAN 0402 [1005 Metric] DEA
2450BP15E0100E
2450BP15E0100E - Filter, Band Pass, 4 Pins, 2.4GHz to 2.5GHz, 0805 [2012 Metric]

2148528RL

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

JOHANSON TECHNOLOGY

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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

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Band Pass - 5.15GHz to 5.95GHz WLAN 0603 [1608 Metric] DEA
DEA162495BT-1289A1
DEA162495BT-1289A1 - RF Filter, Band Pass, 2.3 GHz to 2.69 GHz, 0603

3650692

RF Filter, Band Pass, 2.3 GHz to 2.69 GHz, 0603

TDK

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Band Pass - 2.3GHz to 2.69GHz Bluetooth, LTE, UMTS, WLAN, WiMAX, 5G 0603 [1608 Metric] DEA
DEA202450BT-2175A1-H
DEA202450BT-2175A1-H - RF Filter, Band Pass, 2.4 GHz to 2.5 GHz, 0805

3650701

RF Filter, Band Pass, 2.4 GHz to 2.5 GHz, 0805

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Band Pass 3Pins 2.4GHz to 2.5GHz Bluetooth, WLAN 0805 [2012 Metric] Multicomp Pro RJ45 Adapter
DEA160787LT-5032A1
DEA160787LT-5032A1 - RF Filter, Low Pass, 470 MHz to 787 MHz, 0603

3650683

RF Filter, Low Pass, 470 MHz to 787 MHz, 0603

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Low Pass 6Pins 470MHz to 787MHz LTE Band13 0603 [1608 Metric] Multicomp Pro RJ45 Adapter
LQZ02HQ242A02E
LQZ02HQ242A02E - CHIP LC TRAP FILTER, 2.4-2.5GHZ, 01005

3228016

CHIP LC TRAP FILTER, 2.4-2.5GHZ, 01005

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- 2Pins - - - -
DEA162450BT-1288B1
DEA162450BT-1288B1 - RF Filter, Band Pass, 2.4 GHz to 2.5 GHz, 0603

3650689

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

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Band Pass - 2.4GHz to 2.5GHz Bluetooth, WLAN 0603 [1608 Metric] Multicomp Pro RJ45 Adapter
DEA142450BT-3024A1
DEA142450BT-3024A1 - RF Filter, Band Pass, 2.4 GHz to 2.5 GHz, 0604

3650681

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

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Band Pass - 2.4GHz to 2.5GHz Bluetooth, WLAN 0604 [1411 Metric] DEA
DEA162450BT-1298A1
DEA162450BT-1298A1 - RF Filter, Band Pass, 2.4 GHz to 2.5 GHz, 0603

3650691

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

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Band Pass - 2.4GHz to 2.5GHz Bluetooth, WLAN 0603 [1608 Metric] DEA