Q Microwave - LC Filters

Q Microwave
1591 Pioneer Way
El Cajon, CA 92020
ph: 619-258-7322
fax: 619-444-7939
sales@qmicrowave.com

LC Filters

Lumped Element Filters - Q Microwave´s miniature lumped-element filter capability extends the full frequency range of our capability: 20 MHz to 20 GHz. The principal advantage of this type of filter is its small size. Disadvantages include higher loss for a given rejection requirement. Typical prototype delivery is 2 to 4 weeks.

QLB Series Bandpass Filters
QLL Series Lowpass Filters
QLH Series Highpass Filters
QLN Series Notch Filters

QLB - LUMPED ELEMENT BANDPASS FILTERS

The QLB standard lumped element product series offers a wide variety of high-performance filters. Selectable or customized features are indicated by Q Microwave´s part number convention and the definitions provided in the description table.

Q Microwave´s QLB-Series Description & Part Number Code

Description: QLB(Field 1)M(Field 2)P(Field 3)S(Field 4)(Field 5)

PARAMETER	STANDARD FILTER SPECIFICATIONS	FIELD DESCRIPTION
CUSTOM PERFORMANCE
Center Frequency (Fc)	20 to 20000 MHz	Field 1 (In MHz)
3dB Bandwidth (BW_3dB)	5% to 20% of F_c	Field 2 (In percent)
Rejection	Characterized by Chebychev transfer function with 2 to 6 sections. See plots.	Field 3 (In Number of Sections)
STANDARD PERFORMANCE
Insertion Loss (I/L)	Determined by F_c, BW_3dB,and sections. See plots.	None
Return Loss	10 dB typical over 70% of BW_3dB.See plots.	Standard
Characteristic Impedance	50 Ohms	Standard
Input Power	20 dBm maximum	Standard
ENVIRONMENTAL CAPABILITIES
Operating Temperature	0^oC to +50^oC	Standard
Storage Temperature	-65^oC to +125^oC	Standard
Thermal Cycles	25 cycles -65^oC / +125^oC	Standard
Humidity	90%-95% relative humidity, non-condensing environment	Standard
MECHANICAL CONFIGURATION
Option 1 Connectorized	Finish - Silver or brass I/O - SMA-Female connectors 1.5" x 0.5" x 0.5" typ	Field 4 (Select "CS")
Option 2 Pins - Formed (Surface Mountable)	Finish - Silver or brass. I/O - Formed Leads 1.5" x 0.5" x 0.5" typ	Field 4 (Select "FS")
Option 3 Pins - Straight	Finish - Silver or brass I/O - Formed Leads 1.5" x 0.5" x 0.5" typ	Field 4 (Select "FA")
Option 4 Microstrip	Finish - Silver I/O - Silver ribbon 0.5" x 0.3" x 0.3" typ	Field 4 (Select "MS")
Option 5 Surface Mount Technology (SMT)	Finish - Polyamide substrate with tin or solder finish. I/O - SMT 0.5" x 0.5" x 0.33" typ	Field 4 (Select "SM")
SPECIAL OPTIONS	A variety of special options are available. Unlimited special options may be included in Field 5. Consult Q Microwave´s Sales Office for details.	Field 5

Select QLB-Series Filters

Part Number/ Description	Filter Type	F_c (MHz)	BW_3dB(MHz)	Sect.	Rejection	I/L (dB) at F_c	I/O Style
QLB1250M120P5SCS	LE, BPF	1250	1500	5	30 dBc @ 200 MHz & 3700MHz	2.0	SMA(F)
QLB3000M67P5SCS	LE, BPF	3000	2000	5	30 dBc @ 1600 MHz & 6000 MHz	2.0	SMA(F)
QLB6000M67P5SCS	LE, BPF	6000	4000	5	30 dBc @ 2600 MHz & 11000 MHz	2.0	SMA(F)
QLB10000M40P5SCS	LE, BPF	10000	4000	5	30 dBc @ 6000 MHz & 16000 MHz	2.0	SMA(F)
QLB15000M40P5SCS	LE, BPF	15000	6000	5	30 dBc @ 12000 MHz & 18000 MHz	2.0	SMA(F)
QLB5800M7P3SSM	LE, BPF	5800	400	3	20 dBc @ 5400 MHz & 6200 MHz	3.0	SMT
QLB350M21P5SSM	LE, BPF	350	75	5	40 dBc @ 275 MHz & 425 MHz	2.5	SMT
QLB150M33P5SSM	LE, BPF	150	50	5	40 dBc @ 75 MHz & 225 MHz	2.0	SMT

QLL - LUMPED ELEMENT LOWPASS FILTERS

The QLL standard lumped element product series offers a wide variety of high-performance filters. Selectable or customized features are indicated by Q Microwave´s part number convention and the definitions provided in the description table.

Q Microwave´s QLL-Series Description & Part Number Code

Description: QLL(Field 1)M(Field 3)E(Field 4)-(Field 5)

Note that Field 2 is not used on the QLL series filters

PARAMETER	STANDARD FILTER SPECIFICATIONS	FIELD DESCRIPTION
CUSTOM PERFORMANCE
Cutoff Frequency (F_co)	1500 to 8000 MHz	Field 1 (In MHz)
3dB Bandwidth (BW_3dB)	DC to F_co	Standard
Rejection	Characterized by Chebychev transfer function with 3 to 15 elements. See plots.	Field 3 (In Number of Elements)
STANDARD PERFORMANCE
Insertion Loss (I/L)	Determined by F_c, BW_3dB,and number of elements. See plots.	None
Return Loss	10 dB typical over 70% of BW_3dB.See plots..	Standard
Characteristic Impedance	50 Ohms	Standard
Input Power	20 dBm maximum	Standard
ENVIRONMENTAL CAPABILITIES
Operating Temperature	0^oC to +50^oC	Standard
Storage Temperature	-65^oC to +125^oC	Standard
Thermal Cycles	25 cycles -65^oC / +125^oC	Standard
Humidity	90%-95% relative humidity, non-condensing environment	Standard
MECHANICAL CONFIGURATION
Option 1 Connectorized	Finish - Silver or Brass I/O - SMA-Female connectors 1.5" x 0.5" x 0.5" typ	Field 4 (Select "CS")
Option 2 Pins - Formed (Surface Mountable)	Finish - Silver or brass I/O - Formed Leads 1.5" x 0.5" x 0.5" typ	Field 4 (Select "FS")
Option 3 Pins - Straight	Finish - Silver or brass I/O - Formed Leads 1.5" x 0.5" x 0.5" typ	Field 4 (Select "FA")
Option 4 Microstrip	Finish - Silver I/O - Silver ribbon 0.5" x 0.3" x 0.3" typ	Field 4 (Select "MS")
Option 5 Surface Mount Technology (SMT)	Finish - Polyamide substrate with tin or solder finish. I/O - SMT 0.5" x 0.5" x 0.33" typ	Field 4 (Select "SM")
SPECIAL OPTIONS	A variety of special options are available. Unlimited special options may be included in Field 5. Consult Q Microwave´s Sales Office for details.	Field 5

Select QLL-Series Filters

Part Number/ Description	Filter Type	F_co (MHz)	BW_3dB(MHz)	Elmt	Rejection	I/L (dB)	I/O Style
QLL500M7ECS	LE, LPF	500	DC to 500	7	40 dBc @ 1000 MHz	1.5	SMA(F)
QLL1000M7ECS	LE, LPF	1000	DC to 1000	7	40 dBc @ 2000 MHz	1.5	SMA(F)
QLL2000M7ECS	LE, LPF	2000	DC to 2000	7	40 dBc @ 4000 MHz	1.5	SMA(F)
QLL4000M7ECS	LE, LPF	4000	DC to 4000	7	40 dBc @ 8000 MHz	1.5	SMA(F)
QLL8000M7ECS	LE, LPF	8000	DC to 8000	7	40 dBc @ 16000 MHz	1.5	SMA(F)

QLH - LUMPED ELEMENT HIGHPASS FILTERS

The QLH standard lumped element product series offers a wide variety of high-performance filters. Selectable or customized features are indicated by Q Microwave´s part number convention and the definitions provided in the description table.

Q Microwave´s QLH-Series Description & Part Number Code

Description: QLH(Field 1)M(Field 2)X(Field 3)E(Field 4)-(Field 5)

PARAMETER	STANDARD FILTER SPECIFICATIONS	FIELD DESCRIPTION
CUSTOM PERFORMANCE
Cutoff Frequency (F_co)	1000 to 20000 MHz	Field 1 (In MHz)
3dB Bandwidth (BW_3dB)	Specified in multiple of the cutoff frequency (e.g., by specifying "3" in this field indicates a passband of 3 times F_co)	Field 2 (In Multiples of F_co)
Rejection	Characterized by Chebychev transfer function with 3 to 12 elements. See plots.	Field 3 (In Number of Elements)
STANDARD PERFORMANCE
Insertion Loss (I/L)	Determined by F_co, BW_3dB,and number of elements. See plots.	None
Return Loss	10 dB typical over 70% of BW_3dB.See plots.	Standard
Characteristic Impedance	50 Ohms	Standard
Input Power	20 dBm maximum	Standard
ENVIRONMENTAL CAPABILITIES
Operating Temperature	0^oC to +50^oC	Standard
Storage Temperature	-65^oC to +125^oC	Standard
Thermal Cycles	25 cycles -65^oC / +125^oC	Standard
Humidity	90%-95% relative humidity, non-condensing environment	Standard
MECHANICAL CONFIGURATION
Option 1 Connectorized	Finish - Silver or brass I/O - SMA-Female connectors 1.5" x 0.5" x 0.5" typ	Field 4 (Select "CS")
Option 2 Pins - Formed (Surface Mountable)	Finish - Silver or brass I/O - Formed Leads 1.5" x 0.5" x 0.5" typ	Field 4 (Select "FS")
Option 3 Pins - Straight	Finish - Silver or brass I/O - Formed Leads 1.5" x 0.5" x 0.5" typ	Field 4 (Select "FA")
Option 4 Microstrip	Finish - Silver I/O - Silver ribbon 0.5" x 0.3" x 0.3" typ	Field 4 (Select "MS")
Option 5 Surface Mount Technology (SMT)	Finish - Polyamide substrate with tin or solder finish. I/O - SMT 0.5" x 0.5" x 0.33" typ	Field 4 (Select "SM")
SPECIAL OPTIONS	A variety of special options are available. Unlimited special options may be included in Field 5. Consult Q Microwave´s Sales Office for details.	Field 5

Select QLH-Series Filters

Part Number/ Description	Filter Type	F_co (MHz)	BW_3dB (MHz)	Elmt	BW_40dBc(MHz)	I/L (dB)	I/O Style
QLH500M4X7ECS	LE, HPF	500	500-2000	7	40 dBc @ 250 MHz	1.5	SMA(F)
QLH1000M4X7ECS	LE, HPF	1000	1000-4000	7	40 dBc @ 500 MHz	1.5	SMA(F)
QLH2000M3X7ECS	LE, HPF	2000	2000-6000	7	40 dBc @ 1000 MHz	1.5	SMA(F)
QLH4000M2X7ECS	LE, HPF	4000	4000-8000	7	40 dBc @ 2000 MHz	1.5	SMA(F)
QLH8000M2X7ECS	LE, HPF	8000	8000-16000	7	40 dBc @ 4000 MHz	1.5	SMA(F)

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Q Microwave
1591 Pioneer Way
El Cajon, CA 92020
ph: 619-258-7322
fax: 619-444-7939
sales@qmicrowave.com