QFB Series Bandpass Filters

Product Description

QuinStar Technology's QFB series waveguide bandpass filters are available in ten waveguide bands covering the frequency range of 18 to 220 GHz. Bandwidths may be specified from 2% to 20% of center frequency. The filters can handle up to one Watt (CW) of RF power. Standard versions are for 2%, 5% and 10% passband bandwidth.

The design ripple is typically 0.1 dB with a Chebychev response. High out-of-band rejection is offered with customer-specific attenuation characteristics. Since filter requirements vary widely, QuinStar Technology is set up to design and supply custom products in a short turnaround time.

Specifications

PERFORMANCE PARAMETER	TYPICAL CHARACTERISTICS
Range of Passband Bandwidth	2% to 20% of center frequency; standard versions 5%, 10%
Passband Attenuation (typ)	Less than 1 dB (bandwidth & rejection dependent)
Rejection (typ)	20-40 dB at f_c ± bandwidth
Ripple in Passband	0.1 dB to 0.5 dB depending on percent bandwidth and rejection requirements

FREQUENCY BAND	WAVEGUIDE SIZE	FLANGE PATTERN	OUTLINE DIMENSIONS, inches/mm
FREQUENCY BAND	WAVEGUIDE SIZE	FLANGE PATTERN	A	B	C ¹
K	WR-42	UG-595/U	0.88/22.4	0.88/22.4	2.00/51.0
Ka	WR-28	UG-599/U	0.75/19.1	0.75/19.1	2.00/51.0
Q	WR-22	UG-383/U	1.12/28.4	1.12/28.4	1.50/38.1
U	WR-19	UG-383/U	1.12/28.4	1.12/28.4	1.50/38.1
V	WR-15	UG-385/U	0.75/19.1	0.75/19.1	1.50/38.1
E	WR-12	UG-387/U	0.75/19.1	0.75/19.1	1.00/25.4
W	WR-10	UG-387/U-M	0.75/19.1	0.75/19.1	1.00/25.4
F	WR-8	UG-387/U-M	0.75/19.1	0.75/19.1	1.00/25.4
D	WR-6	UG-387/U-M	0.75/19.1	0.75/19.1	1.00/25.4
G	WR-5	UG-387/U-M	0.75/19.1	0.75/19.1	1.00/25.4

¹Standard versions only. Length may vary depending on configuration. For more information please contact QuinStar.

Ordering Information

Model Number: QFB - AB CD E 0 (Click here for automatic web quote request form)

(Please specify exact center frequency and complete rejection requirements when ordering)

Center frequency rounded to nearest GHz (1A = 100-109 GHz, 1B = 110-119 GHz, etc.)

Passband bandwidth rounded to nearest GHz

Waveguide band designator:

K	=	K-band
A	=	Ka-band
Q	=	Q-band
U	=	U-band
V	=	V-band
E	=	E-band
W	=	W-band
F	=	F-band
D	=	D-band
G	=	G-band

Also available:
	High Pass and Low Pass Filters (QFL/QFH Series)	Band Reject and Notch Filters (QNF Series)
	Master List of All Products	Catalog Request



WR-42 and WR-28		WR-22 through WR-5