Description

20GHz-67GHz Millimetre Wave Filters

High-Performance Cavity Bandpass Filters for mmWave Applications

The HS Series millimetre-wave bandpass filters are high-performance cavity filters independently developed by Shenzhen Huashi Digital Technology Co., Ltd. Designed for 5G backhaul, satellite communications, radar detection, radio astronomy, and millimetre-wave imaging, the series covers K, Ka, Q, V, and W bands with precision cavity structures offering low insertion loss, high stopband rejection, and excellent power handling.

Key Features

• Low insertion loss design for superior mmWave signal transmission efficiency
• Excellent stopband rejection for effective adjacent-band interference isolation
• Multiple precision connector options: 2.92mm-K / 2.4mm-K / Waveguide / Pin
• Compact cavity structure with small size, light weight, and superior heat dissipation
• Broad frequency coverage with full customization support
• Ideal for 5G backhaul, satcom, radar, radio astronomy, and imaging
• Precision surface finishing for corrosion resistance and long-term stability

Technical Specifications

The following table lists the complete technical specifications for the HS Series millimetre-wave bandpass filters. For frequencies and parameters not listed, please contact us for customization.

Model	Freq. Range (GHz)	IL (dB)	VSWR	Stopband F1	Stopband F2	Conn. Type	Dimension (mm)
HS-BPF20.7GKN	20.2-21.2 GHz	1 dB	1.5	>=80 dB @ 19.6 GHz	/	2.92mm-K	68x14x10 mm
HS-BPF20GKN	19.6-21.2 GHz	1 dB	1.5	>=60 dB @ 18 GHz	>=60 dB @ 22.8 GHz	2.92mm-K	80x20x15 mm
HS-BPF23.5GKM	21-26 GHz	1 dB	1.5	>=55 dB @ DC-20 GHz	/	0.3mm Pin	53x13x11 mm
HS-BPF33.25GKM	26.5-40 GHz	1.1 dB	2	>=60 dB @ 24.5 GHz	/	0.38mm Pin	50x14x12 mm
HS-BPF29.25GKN	27.42-31.08 GHz	2 dB	1.5	>=30 dB @ 27.1 GHz	>=30 dB @ 31.5-40 GHz	2.92mm-K	36x12x7 mm
HS-BPF38GWN	36-40 GHz	1 dB	1.3	>=60 dB @ 34.1 GHz	>=60 dB @ 42 GHz	BJ32	49x24x20 mm
HS-BPF44.5GWN	43.5-45.5 GHz	2 dB	1.5	>=60 dB @ 42.8 GHz	>=60 dB @ 46.2 GHz	BJ40	71x13x9 mm
HS-BPF44.5G5N	43.5-45.5 GHz	2 dB	1.5	>=60 dB @ 42.8 GHz	>=60 dB @ 46.2 GHz	2.4mm-K	71x13x9 mm

Connector Reference

Connector	Frequency Range	Features	Typical Application
2.92mm-K	20-40 GHz	Precision coaxial, VSWR<=1.3	mmWave comm. equipment
2.4mm-K	40-50 GHz	Ultra-broadband precision interface	High-freq mmWave systems
0.38mm Pin	26.5-40 GHz	Surface-mount pin, ultra-compact	Phased array / modular systems
0.3mm Pin	21-26 GHz	Micro pin for high-density integration	Miniaturized RF modules
BJ32 Waveguide	36-40 GHz	Low-loss waveguide interface	High-power radar systems
BJ40 Waveguide	43.5-45.5 GHz	Standard waveguide flange	mmWave comm. / test

Ordering Information

1. Naming rule: HS-BPF[Frequency][Connector Code], e.g. HS-BPF44.5GWN = 44.5GHz waveguide model
2. All parameters guaranteed over operating temperature -40C to +85C
3. Custom frequencies, connectors, and dimensions available on request