Manually Variable Attenuators

Features:

Low VSWR
High Attenuation Flatness

Applications:

Wireless
Radar
Laboratory Test

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Manually variable Attenuators includes two product types:

Rotary Stepped Attenuator and Continuously Variable Attenuator .
Rotary Stepped Attenuator is an electronic component used to control signal strength. Its main characteristic is that it has a fixed number of stepped attenuation, each step attenuation is equal, and the step accuracy is high, which can achieve very accurate signal attenuation.
Continuously Variable Attenuators are electronic components that can continuously control signal strength. Its main feature is that it can achieve linear or nonlinear signal attenuation by rotating or changing voltage.

Features about Rotary Stepped Attenuator:

1. Step attenuation: Adjust the attenuation evenly each time.
2. High precision: can control signal strength within a very precise range.
3. Large total attenuation: can reach or even exceed 90dB attenuation.
4. Low noise: considered a type of passive attenuator with relatively low noise.

Application about Rotary Stepped Attenuator:

1. Audio device: used to adjust the size of the power amplifier signal output.
2. Communication equipment: used to adjust the strength of signal reception to avoid damage to the equipment caused by excessively strong signals.
3. Measurement instrument: used to accurately adjust signal strength to meet testing requirements.
4. Microwave equipment: used to adjust the size and intensity of microwave signals.

Features about Continuously Variable Attenuator:

1. Continuously variable: The signal strength can be continuously controlled within the range.
2. High accuracy: able to achieve very precise signal attenuation.
3. Fast response: The signal response speed is fast and can be quickly adjusted for attenuation.

Application about Continuously Variable Attenuator:

1. Wireless communication: used to adjust the strength of signal reception to avoid damage to equipment caused by excessively strong signals.
2. Audio and video equipment: used to adjust the size and strength of audio and video signals.
3. Instrument measurement: used to accurately adjust signal strength to meet testing requirements.
4. Antenna reception: Used to adjust the signal strength received by the antenna to improve reception quality.

Qualwave supplies low VSWR and high attenuation flatness from DC to 40GHz. The attenuation range is 0~121dB, attenuation steps are 0.1dB, 1dB, 10dB. And the average power handling is up to 300 watts.

Rotary Stepped Attenuators
Part Number	Frequency (GHz)	Attenuation Range/Step (dB/dB)	Power (W)	Connectors	Lead Time (Weeks)
QSA06A	DC~6	0~1/0.1, 0~10/1, 0~60/10, 0~70/10, 0~90/10	2, 10	SMA, N	2~6
QSA06B	DC~6	0~11/0.1, 0~50/1, 0~70/1, 0~100/1	2, 10	SMA, N	2~6
QSA06C	DC~6	0~11/0.1, 0~70/1, 0~100/1	2, 10	N	2~6
QSA06D	DC~6	0~71/0.1, 0~101/0.1, 0~95/1, 0~110/1, 0~121/1	2, 10	N	2~6
QSA18A	DC~18	0~9/1, 0~70/10, 0~90/10	2, 10, 25	SMA	2~6
QSA18B	DC~18	0~69/1, 0~99/1	2, 5	SMA	2~6
QSA18C	DC~18	0~99.9/0.1, 0~109/1, 0~121/1	2, 5	N, SMA	2~6
QSA26A	DC~26.5	0~69/1, 0~99/1	2, 10	3.5mm, SMA, N	2~6
QSA26B	DC~26.5	0~9/1, 0~60/10, 0~70/10	2, 10, 25	3.5mm	2~6
QSA28A	DC~28	0~9/1, 0~60/10, 0~70/10, 0~90/10	2, 10, 25	3.5mm, SMA	2~6
QSA28B	DC~28	0~99/1, 0~109/1	5	3.5mm	2~6
QSA40	DC~40	0~9/1	2	2.92mm, 3.5mm	2~6

Continuously Variable Attenuators
Part Number	Frequency (GHz)	Attenuation Range (dB)	Power (W)	Connectors	Lead Time (Weeks)
QCA1	DC~2.5	0~10, 0~16	1	SMA, N	2~6
QCA10-0.5-4-20	0.5~4	0~20	10	N	2~6
QCA50	0.9~4	0~10	50	N	2~6
QCA75	0.9~4	0~10, 0~15	75	N	2~6
QCAK1	0.9~10.5	0~10, 0~12, 0~15, 0~20	100	N	2~6
QCAK3	0.9~10.5	0~10, 0~12, 0~15, 0~25	300	N	2~6
QCA10-2-18-40	2~18	0~40	10	SMA, N	2~6