Since 1979 Wainwright Instruments GmbH has been desiging and manufacturing RF & microwave filters in the beautiful Bavarian town of
Andechs in Germany. We offer many standard and custom designs for low pass, high pass, band pass, band reject and notch filters,
manually and digitally tunable filters, as well as diplexers, duplexers, triplexers, multiplexers and monoplexers. Among other applications
our filters are used predominantly for the mobile communications, wireless connectivity, satellite navigation and communications, and
broadcasting industries. Common technologies supported are LTE, W-CDMA (UMTS), GSM, TD-SCDMA, CDMA2000, TETRA, APCO25,
Iridium, Inmarsat, Thuraya, Globalstar, VHF TV, UHF TV, VHF Radio, FM Radio, Air Navigation, Air Traffic, Amateur Radio, Marine Radio
and SiriusXM.

Digitally Tunable Band Pass Filters

Digitally (LAN) Tunable UHF/Microwave Band Pass Filters

adjustable in 1 MHz steps within tuning bandwidth

Wainwright Instruments introduces UHF/Microwave Band Pass Filters that can be tuned by
computer with intuitively usable software or directly by simple LAN Telnet protocol.
The rejectband up to 3 x Fo (can be extended with an additional lowpass filter) makes
these filters especially suitable for suppressing harmonics
in laboratory applications and automated test stations in production lines.
The carrier frequency of a signal source is allowed to pass and the harmonics are suppressed.

Further specifications:
   · Passband: up to 40 MHz wide (depending on model)
Fo: adjustable in 1 MHz Steps 
Passband Loss: 3 dB max., 1 dB typ.
   · Return Loss: > 14 dB 
Supply Voltage: 23...32 VDC / 1A   
LAN connector: RJ45 standard plug   
Tuning Time: 2 sec typ. to 5 sec. max (band start to band end)  
   · RF Power Rating: 50 W max. CW in passband
Connectors: SMA / N (female/male)
Operating Temperature: 10° C to 45° C 
500 - 600 MHz: 155 mm x 60 mm x 165 mm plus Connectors
700 - 1000 MHz: 305 mm x 60 mm x 185 mm plus Connectors 
· Examples can be found here
· Other frequencies upon request

Tuning Range: 500 to 600 MHz
Passband Bandwidth: Fo ± 20 MHz
Attenuation: 40 dB min., slopes 30 MHz
IL: 1 dB at Fo, 1.5 dB at Fo, ± 20 MHz

Tuning Range: 700 to 1000 MHz
Passband Bandwidth: Fo ± 5 MHz
Attenuation: 40 dB min., slopes 30 MHz
IL: 1 dB at Fo, 1.5 dB at Fo, ± 5 MHz

Other frequencies upon request.

Low Frequency Band Reject Filter (Helical Design)

Cavity Band Reject Filters with Helical Resonators
Frequency Range 50 to 500 MHz

These cavity filters are realized with λ/4 - line coupled
helical resonators.
Compared with conventional unloaded
cavity designs the size can be reduced by approx. 25%
(depending on frequency). Because the Q-factor is almost
the same as in common cavity designs, these filters have
relatively steep slopes and low insertion loss at the
passband corners. Various band widths and stop band
attenuation levels are available:

Band widths: between approx. 1% - 10% of Fo
Upper Passband limits: up to 2.5 to 3.0 x Fo.

The filters are screwdriver adjustable.
specifications on request.

Cavity Band Reject Filters with Helical Resonators
Frequency Range 50 to 500 MHz

Reject Band: 130 to 137 MHz
Attenuation: 30 dB min.
Passbands: DC to 123 MHz and 140 to 600 MHz
IL: 1 dB typically, 1.25 dB at corners