QAF/QAL/QAS Fixed and Level Set Attenuators and Variable Phase Shifters

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QAF/QAL/QAS Micrometer Type Level Set Attenuators,
Variable Phase Shifters and Fixed Attenuators

Characteristics

Broadband Operation

3-30 dB Fixed Attenuation

0-25 dB Variable Attenuation

0-180° Variable Phase Shift

Product Description

QuinStar Technology's QAF and QAL series fixed and level set attenuators and QAS series variable phase shifters are available in seven waveguide bands covering the frequency range of 18 to 110 GHz. The fixed attenuators feature low VSWR in five standard values of attenuation. The level set attenuators and phase shifters incorporate a micrometer which enables very fine and repeatable adjustments to be made.

They are fabricated using a straight waveguide section into which is placed either a lossy material for the attenuators, or a dielectric vane for the phase shifters. Operating characteristics are relatively constant over full waveguide bandwidths.

Specifications

FREQUENCY BAND	K	Ka	Q	U	V	E	W
Frequency Range (GHz)	18-26.5	26.5-40	33-50	40-60	50-75	60-90	75-110
Waveguide Size	WR-42	WR-28	WR-22	WR-19	WR-15	WR-12	WR-10
Fixed Attenuator Attenuation Values	03, 06, 10, 20, 30 dB or customer specific value
VSWR (typ)	1.15:1
Level Set Attenuator Range	0 to 25 dB variable
Insertion Loss (dB typ)	0.3	0.3	0.4	0.5	0.6	0.7	0.8
VSWR (typ)	Attenuation < 20 dB 1.2:1, attenuation > 20 dB: 1.5:1
Variable Phase Shifter Range	0-180 degrees
Insertion Loss (dB typ)	0.5	0.5	0.6	0.7	0.8	0.9	1.0
VSWR (typ)	1.4:1
Power Rating, all except Fixed Attenuators	0.5	0.5	0.5	0.5	0.3	0.3	0.3
Power Rating, Fixed Attenuators (Watts)	2.0	2.0	2.0	2.0	1.0	1.0	1.0

Outline Drawings / Mechanical Specifications

Fixed Attenuator
(round flange pattern shown)

Level Set Attenuator / Variable Phase Shifter
(square flange pattern shown)

FREQUENCY BAND	WAVEGUIDE SIZE	FLANGE PATTERN	OUTLINE DIMENSIONS, inches/mm
			LEVEL SET ATTENUATOR/PHASE SHIFTER			FIXED ATTENUATOR
			A	B	C	L
K	WR-42	UG-595/U	0.88/22.4	3.70/94.0	4.00/101.6	3.0/76.2
Ka	WR-28	UG-599/U	0.75/19.1	3.60/91.4	3.00/76.2	2.75/69.9
Q	WR-22	UG-383/U	1.125/28.58	3.60/91.4	3.00/76.2	2.75/69.9
U	WR-19	UG-383/U	1.125/28.58	3.60/91.4	3.00/76.2	2.75/69.9
V	WR-15	UG-385/U	0.75/19.1	3.60/91.4	3.00/76.2	2.0/50.8
E	WR-12	UG-387/U	0.75/19.1	3.60/91.4	3.00/76.2	2.0/50.8
W	WR-10	UG-387/U	0.75/19.1	3.60/91.4	3.00/76.2	2.0/50.8
F	WR-8	UG-387/U	0.75/19.1	3.60/91.4	3.00/76.2	2.0/50.8
D	WR-6	UG-387/U	0.75/19.1	3.60/91.4	3.00/76.2	2.0/50.8

Ordering Information

Model Number: QA_ - A BC 000 (click here for automatic web quote request form)

Model prefix:

F	=	Fixed attenuator
L	=	Level set attenuator
S	=	Variable phase shifter

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

Fixed attenuator value in dB

("00" for level set attenuator
and variable phase shifter)

Also available:
	Variable PIN Attenuators (QSA Series)	PIN Switches (QSS/QSD/QSn Series)
	Fullband Junction Circulators and Isolators (QJE/QJF Series)	Coax PIN Switches (QSC Series)
	Fullband Isolators and Modulators (QIF/QIM Series)	Manual Waveguide Switches (QWM Series)
	Broadband Cryogenic Circulators and Isolators (QCY/QCI Series)	Electromechanical Waveguide Switches (QWZ Series)
	Micrometer Type Level Set Attenuators and Variable Phase Shifters, Fixed Attenuators (QAF/QAL/QAS Series)	Motorized Programmable Attenuators (QPA Series)
	Dial Type Level Set Attenuators and Variable Phase Shifters (QDA/QDP Series)	Motorized Programmable Phase Shifter (QMP Series)
	Direct Reading Attenuators and Phase Shifters (QAD/QPS Series)
	Master List of All Products	Catalog Request