RF Filters
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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:- RF band-pass filter: selects only a desired band of frequencies
- RF band-stop filter: eliminates an undesired band of frequencies
- RF low-pass filter: allows only frequencies below a cutoff frequency to pass
- 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.
| Manufacturer Part No | Order Code | Description / Manufacturer | Availability | Price For |
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Quantity | Filter Type | No. of Pins | Pass Band Frequency | RF Filter Applications | Filter Case Style | Product Range | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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MLPF-WB55-01E3
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3106011 |
RF Filter, 2.4GHz, Low Pass, Impedance Matched To STM32WB55 STMICROELECTRONICS
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2450LP07C0100T
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3409078 |
LOW PASS FILTER, 2.4-2.5GHZ, 0402 JOHANSON TECHNOLOGY
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Low Pass | 4Pins | 2.4GHz to 2.5GHz | Bluetooth, IoT, ISM, V2X, Wearables, WiFi | 0402 [1005 Metric] | - | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
BPF.58.01
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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 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
BPF900A
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1895491 |
FILTER, BANDPASS L-COM
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Band Pass | - | 902MHz a 928MHz | GSM, ISM, RFID, RF, SCADA | - | - | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
3600BP15M600E
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3409079 |
BAND PASS FILTER, 3.3-3.9GHZ, 0805 JOHANSON TECHNOLOGY
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Band Pass | 4Pins | 3.3GHz to 3.9GHz | - | 0805 [2012 Metric] | - | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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3750BP14A0900T
|
3409080 |
BAND PASS FILTER, 3.3-4.2GHZ, 0603 JOHANSON TECHNOLOGY
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Band Pass | 4Pins | 3.3GHz to 4.2GHz | Cellular, WLAN, Bluetooth, Zigbee, ISM, RF/Microwave, Millimeter Wave, Fiber Optic | 0603 [1608 Metric] | - | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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DLF162500LT-5028A1
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3650703 |
RF Filter, Low Pass, 2.4 GHz to 2.5 GHz, 0603 TDK
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Low Pass | 4Pins | 2.4GHz to 2.5GHz | Bluetooth, WLAN | 0603 [1608 Metric] | - | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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TPX255850MT-7013A3
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3650727 |
RF Filter, Triplexer, 450 MHz to 960 MHz, 1.71 GHz to 2.69 GHz, 3.4 GHz to 5.85 GHz, 1008 TDK
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Triplexer | 9Pins | 450MHz to 960MHz, 1.71GHz to 2.69GHz, 3.4GHz to 5.85GHz | WLAN | 1008 [2520 Metric] | TPX | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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6530BP44A1190
|
3565802 |
BAND PASS FILTER, 5.925-7.125GHZ, WIFI6 JOHANSON TECHNOLOGY
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Band Pass | 4Pins | 5.925GHz to 7.125GHz | WiFi | SMD | - | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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748351124
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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 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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BPF.24.01
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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 | - | Airvu | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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2450BP15E0100E
![2450BP15E0100E - Filter, Band Pass, 4 Pins, 2.4GHz to 2.5GHz, 0805 [2012 Metric]](https://nz.element14.com/productimages/promo/en_GB/2148528-40.jpg "2450BP15E0100E")
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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] | - | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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0915LP15B026E
![0915LP15B026E - Filter, Low Pass, 8 Pins, 902MHz a 928MHz, 0805 [2012 Metric]](https://nz.element14.com/productimages/promo/en_GB/1885520-40.jpg "0915LP15B026E")
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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] | - | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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MLPF-WB55-02E3
|
3387267 |
RF FILTER, LOW PASS, 2.4 TO 2.5GHZ, CSP STMICROELECTRONICS
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Low Pass | - | 2.4GHz to 2.5GHz | Bluetooth 5, IEEE 802.15.4, OpenThread, Optimized for STM32WB55Vx, Zigbee | CSP | - | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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0868LP15A020E
|
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]](https://nz.element14.com/productimages/promo/en_GB/1885508-40.jpg "2450LP14B100T")
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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] | - | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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DEA162450BT-1260B2
|
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] | - | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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DEA102700LT-6307A2
|
3650678 |
RF Filter, Low Pass, 2.4 GHz to 2.7 GHz, 0402 TDK
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Low Pass | 4Pins | 2.4GHz to 2.7GHz | Bluetooth, LTE, UMTS, WLAN, WiMAX, 5G | 0402 [1005 Metric] | DEA | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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HHM22137A2
|
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 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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DEA105150HT-8044A1
|
3650679 |
RF Filter, High Pass, 5.15 GHz to 5.95 GHz, 0402 TDK
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0915LP15B026E
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1885520RL |
Filter, Low Pass, 8 Pins, 902MHz a 928MHz, 0805 [2012 Metric] JOHANSON TECHNOLOGY
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DEA202450BT-2175A1-H
|
3650701 |
RF Filter, Band Pass, 2.4 GHz to 2.5 GHz, 0805 TDK
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Band Pass | 3Pins | 2.4GHz to 2.5GHz | Bluetooth, WLAN | 0805 [2012 Metric] | - | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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DEA165550BT-2230C2-H
|
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 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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DEA160787LT-5032A1
|
3650683 |
RF Filter, Low Pass, 470 MHz to 787 MHz, 0603 TDK
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Low Pass | 6Pins | 470MHz to 787MHz | LTE Band13 | 0603 [1608 Metric] | - | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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DEA162495BT-1289A1
|
3650692 |
RF Filter, Band Pass, 2.3 GHz to 2.69 GHz, 0603 TDK
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Band Pass | 4Pins | 2.3GHz to 2.69GHz | Bluetooth, LTE, UMTS, WLAN, WiMAX, 5G | 0603 [1608 Metric] | DEA | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||