Innovation and Technology at Your Service

Microwave Filters and Passive Components

RF Microtech provides both conventional and innovative designs of RF filters, diplexers, multiplexers and passive components in waveguide, coaxial and printed circuit technologies. Our products are also suited to small productions and for space or military qualifications.

We are specialised in:

  • miniaturized waveguide filters and diplexers with very selective pseudo-elliptic responses, possibly loaded with dielectrics for further volume savings and Q improvements
  • tunable and switchable high-Q filters for response reconfigurability on waveguide and planar technologies
  • micro-machined microwave filters for cost saving and high-yield production at high frequency bands

Circuital and full-wave simulation tools are utilized to develop electromagnetic and thermo-mechanical models and design a large variety of innovative and high performance components, presented in international journal and conference papers.

RF Microtech offers the following services

  • Custom electromagnetic and thermo-mechanical design of filters, diplexers, multiplexers and passive components from low frequencies up to very high frequencies
  • Prototyping and medium-scale manufacturing of components thanks to collaborations with several manufactures in Italy and Europe
  • RF test and Characterization up to 67GHz
  • Test for reliability assessment thanks to collaborations with several labs in Italy and Europe

Send us your requirements, even the most challenging one.
We will be pleased to analyze it.
Try us out!

Examples of developed prototypes

Name Main Features Tech Notes
RF Microtech - NEW K-band Tunable Waveguide Bandpass Filter 03 Central Frequency (GHz): Analog from 17.65 to 18.94 (~7%)
3dB Bandwidth (MHz): 50
QUL: < 2
Size ( WxLxH mm³): 22x40x23
RF Connection: WR42
PDF
UWB Filter with 5 High-rejection Notch Bands Notch Frequencies, f0 (GHz):0.806, 0.942, 1.842, 2.140, 2.630
Pass Band (GHz): 0.08÷ 6
Insertion Loss (dB): < 2
Rejection (dB): >35
Size ( WxLxH mm³): 700x400x100
RF Connection: N
PDF
C-band 4-channel Switched Filter Bank Central Frequencies, f0 (GHz): 4.058÷4.471
FBW (%): 4.2÷3.8
Insertion Loss (dB): < 4
Attenuation (dB@freq. [GHz]): 80 @ < 3.5
80 @ 5 ÷ 9
40 @ 9 ÷ 19
Size ( WxLxH mm³): 100x110x16
RF Connection: SMA
PDF
C-band Compact Dielectric Bandpass Filter 01 C-band Compact Dielectric Bandpass Filter 01 Central Frequencies, f0 (GHz): 4.460
FBW (%): 4.48
Insertion Loss (dB): 0.35
Attenuation (dB@freq. [GHz])45 @ 3 ÷ 4.19
40 @ 4.66 ÷ 6
Size ( WxLxH mm³): 29x37x20
RF Connection: SMA
PDF
C-band Compact Dielectric Bandpass Filter 02 C-band Compact Dielectric Bandpass Filter 02 Central Frequencies, f0 (GHz): 4.364
FBW (%): 3.2
Insertion Loss (dB): 0.6
Attenuation (dB@freq. [GHz]):36 @ 2.5 ÷ 4.254
70 @ 2.75 ÷ 4.05
30 @ 4.684 ÷ 5.516
Size ( WxLxH mm³): 40x40x20
RF Connection: SMA
PDF
C-band Compact Wide Spurious Rejection Bandpass Filter 01 C-band Compact Wide Spurious Rejection Bandpass Filter 01 Central Frequencies, f0 (GHz): 3.855
FBW (%): 3.3
Insertion Loss (dB): <1
Attenuation (dB@freq. [GHz]):60 @ < 4.75
52 @ 4.5 ÷ 18
Size ( WxLxH mm³): 18x48x15
RF Connection: SMA
PDF
C-band Compact Wide Spurious Rejection Bandpass Filter 01 C-band Compact Wide Spurious Rejection Bandpass Filter 02 Central Frequencies, f0 (GHz): 4.170
FBW (%): 4.7
Insertion Loss (dB): <1
Attenuation (dB@freq. [GHz]):75 @ < 3.87
60 @ 4.48 ÷ 19
Size ( WxLxH mm³): 17x73x14
RF Connection: SMA
PDF
Ka-band Micromachined Bandpass Filter Ka-band Micromachined Bandpass Filter Central Frequencies, f0 (GHz): 30
FBW (%): 1.6
Insertion Loss (dB): < 2.5
Attenuation (dB@freq. [GHz]):40 @ 0 ÷ 29.16
40 @ 30.84 ÷ 40
Size ( WxLxH mm³): 10x10x3
RF Connection: SMA
PDF
S-band Compact Dielectric Bandpass Filter 01 A S-band Compact Dielectric Bandpass Filter 01 Central Frequencies, f0 (GHz): 1.975
FBW (%): 1.5
Insertion Loss (dB): 0.35
Attenuation (dB@freq. [GHz]):30 @ < 1.9
75 @ 2.16 ÷ 2.8
Size ( WxLxH mm³): 51x52x48
RF Connection: SMA
PDF
Avatar RF microtech - Innovation and Technology at Your Service S-band Micromachined Bandpass Filter Central Frequencies, f0 (GHz): 2
FBW (%): 6.25
Insertion Loss (dB): < 2.5
Attenuation (dB@freq. [GHz]):45 @ < 1.85
40 @ 2.15 ÷ 4
Size ( WxLxH mm³): 22x42x3
RF Connection: SMA
PDF
some examples of waveguide filter prototypes X-band Compact Waveguide Bandpass Filter 01 Central Frequencies, f0 (GHz): 9.95
FBW (%) 2
Insertion Loss (dB): 0.2
Attenuation (dB@freq. [GHz]):30 @ 9.5 ÷ 9.7
30 @ 10.3 ÷ 10.5
Size ( WxLxH mm³): 50x100x15
RF Connection: WR-90
PDF
some examples of waveguide filter prototypes X-band Compact Waveguide Bandpass Filter 02 Central Frequencies, f0 (GHz): 10.1
FBW (%): 2
Insertion Loss (dB): 0.3
Attenuation (dB@freq. [GHz]):25 @ 9 ÷ 9.9
25 @ 10.3 ÷ 12
Size ( WxLxH mm³): 50x25x15
RF Connection: WR-90
PDF
X-band Highly Selective Compact Waveguide Bandpass Filter 02 A X-band Highly Selective Compact Waveguide Bandpass Filter 01 Central Frequencies, f0 (GHz): 10.2
FBW (%): 2
Insertion Loss (dB): 0.35
Attenuation (dB@freq. [GHz]):55 @ 8 ÷ 10
25 @ 10.5 ÷ 12
Size ( WxLxH mm³): 25x60x15
RF Connection: WR-90
PDF
X-band Highly Selective Compact Waveguide Bandpass Filter 02 A X-band Highly Selective Compact Waveguide Bandpass Filter 02 Central Frequencies, f0 (GHz): 10.8
FBW (%): 3.7
Insertion Loss (dB): 0.3
Attenuation (dB@freq. [GHz]):25 @ 9 ÷ 10.4
50 @ 11.3 ÷ 12.4
Size ( WxLxH mm³): 25x55x15
RF Connection: WR-90
PDF
X-band Highly Selective Compact Waveguide Bandpass Filter 03 A X-band Highly Selective Compact Waveguide Bandpass Filter 03 Central Frequencies, f0 (GHz): 10
FBW (%): 1.45
Insertion Loss (dB): 0.6
Attenuation (dB@freq. [GHz]):45 @ 9.895, 10.11
70 @ 9.843, 10.165
Size ( WxLxH mm³): 40x25x40
RF Connection: WR-90
PDF
X-band Highly Selective Compact Waveguide Dual-Band Filter X-band Highly Selective Compact Waveguide Dual-Band Filter Central Frequencies, f0 (GHz): 9.3, 9.95
FBW (%): 2.3, 1.6
Insertion Loss (dB): 0.25
Attenuation (dB@freq. [GHz]):35 @ 9.6 ÷ 9.8
50 @ 10.3 ÷ 10.4
Size ( WxLxH mm³): 40x20x40
RF Connection: WR-90
PDF
X-band Waveguide Diplexer With Folded Geometry B X-band Waveguide Diplexer With Folded Geometry Central Frequencies, f0 (GHz): 8.7, 9.3
FBW (%): 2.3, 2.15
Insertion Loss (dB): 0.25
Attenuation (dB@freq. [GHz]):60dB @ channel isolation
40 @ 4.66 ÷ 6
Size ( WxLxH mm³): 80x340x15
RF Connection: WR-90
PDF
X-band Waveguide Diplexer With High Isolation X-band Waveguide Diplexer With High Isolation Central Frequencies, f0 (GHz): 10.055, 10.525
FBW (%): 2.5, 2.4
Insertion Loss(dB): 0.35
Attenuation (dB@freq. [GHz]):65dB @ channel isolation ÷ 6
Size ( WxLxH mm³): 130x130x15
RF Connection: WR-90
PDF
Avatar RF microtech - Innovation and Technology at Your Service UHF-band Lumped Bandpass Filter Central Frequencies, f0 (GHz): 0.62
FBW (%): 145
Insertion Loss (dB): 0.5
Attenuation (dB@freq. [GHz]):20 @ 0
20 @ 1.37 ÷ 1.67
40 @ 1.67 ÷ 6
Size ( WxLxH mm³): 11x30x5
RF Connection: SMD
PDF
Avatar RF microtech - Innovation and Technology at Your Service S-band Lumped Bandpass Filter Central Frequencies, f0 (GHz): 1.475
FBW (%): 61
Insertion Loss (dB): 1.5
Attenuation (dB@freq. [GHz]):40 @ 0 ÷ 0.52
20 @ 0.52 ÷ 0.72
20 @ 2.23 ÷ 2.53
40 @ 2.53 ÷ 6
Size ( WxLxH mm³): 15x22x5
RF Connection: SMD
PDF
Avatar RF microtech - Innovation and Technology at Your Service S-band Planar Bandpass Filter 01 Central Frequencies, f0 (GHz): 2.52
FBW (%): 43
Insertion Loss (dB): 1
Attenuation (dB@freq. [GHz]):40 @ 0 ÷ 1.37
20 @ 1.37 ÷ 1.67
20 @ 3.37 ÷ 3.67
40 @ 3.67 ÷ 6
Size ( WxLxH mm³): 24x20x5
RF Connection: SMD
PDF
Avatar RF microtech - Innovation and Technology at Your Service S-band Planar Bandpass Filter 02 Central Frequencies, f0 (GHz): 3.38
FBW (%): 20
Insertion Loss (dB): 1
Attenuation (dB@freq. [GHz]):40 @ 0 ÷ 2.43
20 @ 2.43 ÷ 2.73
20 @ 4.03 ÷ 4.33
40 @ 4.33 ÷ 6
Size ( WxLxH mm³): 18x22x5
RF Connection: SMD
PDF

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