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Crystal Filter

Crystal Filters utilize the piezoelectric effect and resonance properties of quartz crystals to selectively pass signals within a specific frequency range while suppressing unwanted frequencies. Known for their high stability and precision, they are widely used in communication systems, radar, navigation, and other critical applications requiring exact frequency control.

 

Your Professional Crystal Filter Supplier
 

Suzhou Hangjing Elec & Tech Co., Ltd., founded in 2014, is a technology-driven small and medium-sized enterprise (SME) specializing in the full-spectrum R&D, design, production, and sales of quartz frequency control components. Rooted in a professional team and advanced manufacturing expertise, the company has developed a robust product portfolio encompassing quartz crystals, crystal oscillators, TCXO, VCXO, OCXO, crystal filters-ranging from foundational components to tailored systems.

 

 
 
Why choose us

Superior Quality

A precision supply chain ensuring consistent product quality;An ultra-low failure rate validated by rigorous testing;High-quality materials and advanced technology make the product more reliable.

Service Advantages

A customer-centric service framework (covering pre-sales consultation to post-sales support) that prioritizes rapid response. 24-hour online service, timely and fast quotation for you.

Sales Market

Our Products has expanded into key international regions including Europe, Southeast Asia, the Americas, Oceania, and other major markets. This global network enables the company to provide full support to leading electronics manufacturers around the world, while maintaining a strong focus on high-quality products.

Our Certificate

All our products have passedGB/T 19001 - 2016/ISO 9001:2015 Quality Management System Standard, This demonstrates that they meet international standards for quality, safety, and performance.

 

 

5G Bandpass Crystal Filter 11 X 4

 

 

5G Band Pass Filters are a type of filter that allows a specified frequency range to pass through with minimal attenuation. 5G Filters are available in both the mmWave and Sub-6GHz frequency range. Use the parametric search tools to narrow down on products by type, frequency, insertion loss, power, application, package type and various other parameters.

 

Type

Frequency (MHz)

Bandwidth

Stop BandWidth

Ripple (dB)

Insertion Loss(dB)

Guaranteed Attenuation (dB)

Terminating Impedance (KΩ//pF)

No of Poles

Size (mm)

DB

KHz

DB

KHz

DB

KHz

10M7.5A

10.7

3

3.75

20

18

–

-

0.5

1.5

20

1.8//5

2

HC-49T

10M7.5B

10.7

3

3.75

40

14

–

-

1

2

40

1.8//5

4

HC-49T×2

10M12A

10.7

3

6

20

23

–

-

0.5

1.5

20

2.5//2.5

2

HC-49T

10M12B

10.7

3

6

40

20

–

-

1

2.5

40

2.5//1.5

4

HC-49T×2

10M15A

10.7

3

7.5

18

25

–

-

1

1.5

20

3.0// 2.0

2

HC-49T

10M15B

10.7

3

7.5

40

25

–

-

1

2

40

3.0//1.5

4

HC-49T×2

7M5A

7.8

1

2.5

15

10

–

-

1

2

-

3300// 1.5

2

HC-49T

8M7.5A1

8.192

3

3.75

-

-

40

40

1

1.5

-

2000

2

HC-49T

8M7.5A2

8.448

3

7.5

18

30

50

80

1

2

-

3000

2

HC-49T

16M7.5A1

16.9

3

3.75

-

-

40

30

1

2

-

1000

2

HC-49T

16M7.5A2

16.9

3

7.5

18

28

-

-

0.5

2

-

1500//2.0

2

HC-49T

10M8A

10

3

4

40

30

-

-

0.5

2

40

1500

2

HC-49T

17.9M15B

17.9

3

7.5

40

25

-

-

1

1.5

40

2000

4

HC-49T×2

21.7M15B

21.7

3

7.5

40

25

-

-

1

1.5

40

1200

4

HC-49T×2

P60MA1

60

3

3

40

30

-

-

1

1.5

40

1.5

2

HC-49T

 

Advantages of 5G Bandpass Crystal Filter 11 X 4

 

Noise Reduction

By eliminating out-of-band interference, the filter significantly lowers background noise, improving the signal-to-noise ratio (SNR).

01

Improved Signal Clarity

With unwanted signals filtered out, the desired signal becomes clearer and more stable, enhancing audio and data quality.

02

Enhanced System Sensitivity

Receivers can detect weaker signals more effectively when not overwhelmed by adjacent-band interference.

03

Increased Data Throughput

Cleaner signals allow for higher modulation schemes and faster data transmission rates.

04

Protection of Downstream Components

Prevents strong out-of-band signals from overloading amplifiers and mixers, which could otherwise cause distortion or damage.

05

 

Types of 5G Bandpass Crystal Filter 11 X 4

 

5G Bandpass Crystal Filter 11 X 4.7
  • Cavity Filters

    Constructed from resonant metal cavities, cavity bandpass filters leverage electromagnetic resonance to achieve high selectivity and excellent signal isolation.

  • Coaxial Filters

    These cylindrical RF filters utilize coaxial transmission line principles to create resonant circuits that pass desired frequency bands with minimal loss.

  • Crystal Filters

    Leveraging the piezoelectric properties of quartz crystals, these filters provide extremely precise frequency selection with minimal drift over time and temperature.

  • Dual- and Multiple-Band Filters

    Engineered to operate across two or more distinct frequency bands simultaneously, these advanced filters integrate multiple resonant circuits into a single package.

 

Applications of 5G Bandpass Crystal Filter 11 X 4
 

Cellular Communication
5G Bandpass Crystal Filter a critical role in modern smartphones and cellular infrastructure. With the increasing demand for high-speed data and reliable voice services, mobile networks operate across multiple frequency bands (e.g., 4G LTE, 5G NR). Bandpass filters enable devices to isolate and process specific frequency channels used by cell towers, ensuring accurate signal reception and transmission.

 

Satellite Communication
Satellite-based systems depend heavily on precise RF filtering to maintain reliable links between orbiting satellites and ground stations. Due to the vast distances involved and the presence of cosmic noise and atmospheric interference, bandpass filters are crucial for preserving signal integrity.

 

Wireless Communication Systems
Short-range wireless technologies such as Wi-Fi, Bluetooth, Zigbee, and LoRa rely on 5G Bandpass Crystal Filter to operate efficiently in crowded radio environments. These filters ensure that devices can coexist without degrading each other's performance.

 

Broadcasting
In radio and television broadcasting, 5G Bandpass Crystal Filter are vital for transmitting clean, interference-free signals over the air. Broadcasters must adhere to strict frequency licensing regulations, and filters help ensure compliance while maximizing signal quality.

 

Working Principle of 5G Bandpass Crystal Filter 11 X 4

 

 

Electro-acoustic-electrical conversion

When an external electrical signal is applied to a crystal, the piezoelectric effect generates mechanical vibrations (acoustic waves), which form standing wave resonances within the crystal.

 

Frequency selectivity

The crystal vibrates strongly only at a specific frequency (the resonant frequency), suppressing signals at other frequencies. Through circuit design (such as interdigitated electrodes and coupled resonators), the acoustic wave signal is converted back into an electrical signal, creating bandpass filtering characteristics.

 

Bandpass implementation

Combining low-pass and high-pass filtering characteristics, it allows signals in the target frequency band (such as 5G Sub-6GHz or millimeter wave bands) to pass while attenuating out-of-band interference (such as signals in adjacent bands and Wi-Fi/Bluetooth noise).

 

 

How to choose 5G Bandpass Crystal Filter 11 X 4

 

Operating Frequency Range: The most critical parameter is the center frequency and the passband range your system operates within. The filter must be designed to allow signals within this range to pass with minimal attenuation while rejecting out-of-band frequencies.

 

Bandwidth (Passband Width): Bandwidth defines the range of frequencies that the filter allows to pass through. It directly impacts selectivity and system flexibility.

 

Insertion Loss: This measures the signal power lost as it passes through the filter within the passband. Lower insertion loss is preferable to maintain signal strength and system efficiency.

 

Impedance Matching: Most RF systems operate at a standard impedance (typically 50 ohms). The filter must match this impedance to prevent signal reflections and standing waves.

 

Rejection and Stopband Performance: The filter’s ability to attenuate signals outside the passband is crucial for interference suppression.

 

Power Handling Capacity: The filter must withstand the maximum RF power levels in your system without arcing, heating, or degrading.

 

Temperature Stability and Environmental Durability: Performance should remain consistent across operating temperatures and environmental conditions.

 

Filter Type and Technology: Different filter technologies offer trade-offs between performance, size, cost, and tunability.

 

Certificates

 

 

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FAQ

 

Q: Would you make custom products?

A: Yes, we offer custom design based on customer's requirements.

Q: How long to delivery time?

A: Usually it is 3-10 days if the goods are in stock. Or it is 15-20 days according to quantity or customize.

Q: What is your MOQ?

A: No MOQ for any sample test,at least 10pcs after sample order.

Q: Can you send a sample for us to develop?

A: Yes, we can. Sample can send out once you ask for it, but will ask a sample fee. Sample fee will return back in future order.

Q: Payment?

A: 30% deposit and 70% balance before shipping.

We're professional crystal filter manufacturers and suppliers in China, providing high quality customized products with low price. If you're going to wholesale discount crystal filter, welcome to get quotation and free sample from our factory.

5G Bandpass Crystal Filter, High Frequency Crystal Filter, High Frequency Crystal Filter UM 1