ample-chip ample-chip
RFQ
BOM

RF Filters

Image Part Number Description / PDF Quantity Rfq
HF0AA1300A700

HF0AA1300A700

Elco (AVX)

SIGNAL CONDITIONING 1300 MHZ SIZ

35
HF0AA4680A700

HF0AA4680A700

Elco (AVX)

SIGNAL CONDITIONING 4680 MHZ SIZ

0
LP0AA0174A700

LP0AA0174A700

Elco (AVX)

SIGNAL CONDITIONING 174 MHZ SIZE

35
BP0FA1100A7TR

BP0FA1100A7TR

Elco (AVX)

RF FILTER BANDPASS 1.1GHZ 31ULGA

0
2450BP15F0100E

2450BP15F0100E

Johanson Technology

RF FILTER BAND PASS 2.45GHZ 0805

0
LP0603N2750ANTR

LP0603N2750ANTR

Elco (AVX)

LOW PASS FILTER

0
LP0805H4000ASTR

LP0805H4000ASTR

Elco (AVX)

LOW PASS FILTER

0
LP0805A0942ASTR

LP0805A0942ASTR

Elco (AVX)

LOW PASS FILTER

0
LP0AA1630A700

LP0AA1630A700

Elco (AVX)

SIGNAL CONDITIONING 1630 MHZ SIZ

35
LP0AA0290A700

LP0AA0290A700

Elco (AVX)

SIGNAL CONDITIONING 290 MHZ SIZE

35
HF0AA2470A700

HF0AA2470A700

Elco (AVX)

SIGNAL CONDITIONING 2470 MHZ SIZ

0
LP0AA0171A700

LP0AA0171A700

Elco (AVX)

SIGNAL CONDITIONING 171 MHZ SIZE

35
2450BP15H0100E

2450BP15H0100E

Johanson Technology

RF FILTER BAND PASS 2.45GHZ 0805

5004
6720005121

6720005121

Weidmuller

WI-ACC 2.4GHZ BAND PASS FILTER

0
LFL212G45TC1A023

LFL212G45TC1A023

TOKO / Murata

RF FILTER SIGNAL CONDITION 0805

0
LP0FA0057A700

LP0FA0057A700

Elco (AVX)

SIGNAL CONDITIONING 57 MHZ SIZE

15
0892LP07A0136T

0892LP07A0136T

Johanson Technology

RF FILTER LOW PASS 892MHZ 0402

0
LP0DA1840A700

LP0DA1840A700

Elco (AVX)

SIGNAL CONDITIONING 1840 MHZ SIZ

21
BP0FA1130A700

BP0FA1130A700

Elco (AVX)

RF FILTR BANDPASS 1.13GHZ 31ULGA

0
LFL211G96TC1A042

LFL211G96TC1A042

TOKO / Murata

RF FILTER SIGNAL CONDITION 0805

0

RF Filters

1. Overview

RF Filters are passive components that selectively allow or block specific frequency ranges in radio frequency (RF) systems. They are critical for signal integrity in wireless communication by eliminating interference, enhancing signal clarity, and ensuring compliance with regulatory standards. Modern applications include 5G networks, Wi-Fi systems, radar, and IoT devices.

2. Main Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
Bandpass FilterAllows frequencies within a specific rangeCellular base stations, Wi-Fi routers
Low-pass FilterPasses frequencies below cutoff frequencyPower amplifiers, GPS systems
High-pass FilterAttenuates frequencies below cutoff frequencySatellite communication systems
Band-reject FilterBlocks specific frequency bandsMedical imaging equipment
SAW FilterUses surface acoustic waves for precise filteringSmartphones, automotive radar
BAW FilterEmploys bulk acoustic resonators for high-frequency operation5G mmWave devices, WLAN modules
Cavity FilterMetallic resonant cavities for high Q-factorRadio astronomy, military communication

3. Structure and Components

Typical RF filter structures include:

  • Resonant Elements: Determine passband frequencies (e.g., quartz crystals in SAW filters)
  • Transmission Lines: Microstrip or coplanar waveguides for signal propagation
  • Dielectric Materials: Substrates like alumina or LTCC for impedance control
  • Enclosure: Metal housing for EMI shielding (cavity filters) or surface-mount packages
  • Ports: Input/output connectors (SMA, N-type) or PCB pads

Advanced designs integrate MEMS tuning mechanisms or LTCC multilayer structures for miniaturization.

4. Key Technical Specifications

ParameterDescriptionImportance
Frequency RangeOperational bandwidth (e.g., 2.4-2.5 GHz)Determines application compatibility
Insertion LossSignal attenuation in passband (e.g., <1.5 dB)Impacts system sensitivity
Bandwidth (3dB)Passband width at half-power pointsDefines frequency selectivity
Rejection RatioStopband attenuation level (e.g., >40 dB)Interference suppression capability
Power HandlingMaximum input power (e.g., 20W CW)Prevents component damage
Temperature StabilityFrequency drift vs temperature (e.g., 50 ppm/ C)Ensures operational reliability

5. Application Fields

  • Telecommunications: 5G NR base stations, fiber optic networks
  • Aerospace: Avionics navigation systems, satellite transponders
  • Medical: MRI RF coils, ultrasound imaging equipment
  • Automotive: V2X communication modules, 77GHz radar systems
  • Industrial: Wireless sensor networks, RFID readers

6. Leading Manufacturers and Products

ManufacturerRepresentative ProductKey Features
Murata ManufacturingSAWLF5G30D3.3-4.2 GHz BAW filter for 5G
QorvoQPM25152.3-2.7 GHz bandpass filter, 100W power rating
Skyworks SolutionsSKY13460DC-6 GHz SPDT switch with integrated filters
Mini-CircuitsBFCN-1100+Cavity filter with 1050-1300 MHz range
TE ConnectivityRFHF35-2.92MHigh-frequency coaxial filter up to 40 GHz

7. Selection Guidelines

Key considerations:

  1. Frequency Requirements: Match passband with system operating bands
  2. Power Handling: Ensure ratings exceed maximum system power
  3. Environmental Conditions: Temperature (-40 to +85 C), humidity resistance
  4. Form Factor: SMD for compact designs vs. coaxial for high-power applications
  5. Cost vs. Performance: Trade-off between ceramic filters (low-cost) and cavity filters (high-stability)

Case Study: Selecting a BAW filter for 5G mmWave devices requires <0.5 dB insertion loss, 28 GHz operation, and compliance with 3GPP TS 38.141-1 standards.

8. Industry Trends and Future Outlook

Key development trends:

  • Higher Frequency Operation: mmWave filters for 5G/6G (24-100 GHz) using photonic bandgap structures
  • Miniaturization: Wafer-level packaging reducing SAW filter size to 0.4x0.2 mm
  • Integrated Solutions: Filter+LNA modules for IoT devices (e.g., Qorvo's QM33013)
  • Advanced Materials: Lithium niobate on silicon (LiNoSi) substrates improving temperature stability
  • Software-Defined Radio: Tunable RF filters with MEMS or ferroelectric materials

The market is projected to grow at 9.8% CAGR (2023-2030), driven by automotive radar and satellite internet demand.

RFQ BOM Call Skype Email
Top