
Items : %s%s
RF Antennas
Mounting Type
- Bracket Mount
Part Status
- Active
Series
- 663
- 664
Compare | Image | Name | Manufacturer | Pricing(USD) | Quantity | Weight(Kg) | Size(LxWxH) | Datasheet | Factory Lead Time | Mount | Material | Packaging | Published | Series | Pbfree Code | Part Status | Moisture Sensitivity Level (MSL) | Connector Type | Termination | Max Operating Temperature | Min Operating Temperature | Length | RoHS Status | Radiation Hardening | Package / Case | REACH SVHC | Reach Compliance Code | Frequency | Height | Width | Impedance | Resistance | Mounting Type | Bandwidth | Ratings | Ingress Protection | Nominal Supply Current | Max Frequency | Lead Length | Frequency Range | Height (Max) | Gain | Max Power Dissipation | Power - Max | Feature | Characteristic Impedance | Construction | RF/Microwave Device Type | VSWR | Data Rate | Applications | Return Loss | Number of Bands | Omnidirectional | RF Family/Standard | Antenna Type | Frequency Group | Frequency (Center/Band) |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
![]() |
EXE821SFU | Laird Technologies IAS | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | 8 Weeks | Bulk | 2009 | EXE | Active | 1 (Unlimited) | SFU | RoHS Compliant | unknown | Connector Mount | 821MHz~902MHz | 8.000 203.20mm | MOBILE STATION ANTENNA | 1.5 | 1 | Whip, Straight | UHF 300MHz~1GHz | 861MHz | |||||||||||||||||||||||||||||||||||
![]() |
SP.1615.25.4.A.02 | Taoglas | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 8 Weeks | Surface Mount | Tray | Globalstar | Active | 1 (Unlimited) | Pin | ROHS3 Compliant | 3.9878mm | 50Ohm | Adhesive | 1.61978GHz | 1.602GHz~1.628GHz | 0.197 5.00mm | 4dBi | 1.5 | Globalstar | -10dB | 1 | Cellular, Navigation | Ceramic Patch | UHF 1GHz~2GHz | 1.615GHz | |||||||||||||||||||||||||||||
![]() |
CFS69383P-30D43F | Laird Technologies IAS | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 10 Weeks | Active | Not Applicable | 4.3/10 - Female | RoHS Compliant | Panel Mount | 698MHz~960MHz 1.35GHz~1.55GHz 1.69GHz~3.8GHz | 0.300 7.62mm | 3.5dBi, 3.9dBi, 4.8dBi, 4.8dBi, 4.4dBi, 4.5dBi, 4.4dBi, 4.9dBi, 5.4dBi, 4.8dBi | 50W | Cable - 300mm | 1.8, 2 | AWS, GSM, DCS, LTE, UMTS, WiMax™ | 10 | Cellular, WiFi | Flat Panel | Wide B | 752MHz 859MHz 920MHz 1.45GHz 1.785GHz 1.92GHz 2.04GHz 2.4GHz 2.6GHz 3.55GHz | ||||||||||||||||||||||||||||||||||
![]() |
MA450.K.LBICG.004 | Taoglas | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 10 Weeks | Bulk | Storm | Active | Not Applicable | SMA Male | ROHS3 Compliant | Panel Mount | IP67 | 698MHz~960MHz 1.71GHz~2.17GHz 2.4GHz~2.69GHz 3.3GHz~3.6GHz 5.8GHz | 1.220 31.00mm | 6.8dBi | LNA, Filter | 2 | BEIDOU, GLONASS, GPS, LTE, WLAN | 6 | Cellular, Navigation, WiFi | Flat Bar | Wide B | 829MHz 1.94GHz 2.4GHz 2.59GHz 3.45GHz 5.8GHz | ||||||||||||||||||||||||||||||||
![]() |
637112 | Laird - Wireless & Thermal Systems | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | Adhesive | Bulk | 2010 | Discontinued | 1 (Unlimited) | SMC Male (1), SMA Male (1) | 138mm | RoHS Compliant | SMC | 11.176mm | 32mm | Adhesive, Hook and Loop | IP50 | IP50 | 824MHz~960MHz 1.574GHz~1.576GHz 1.71GHz~2.17GHz | 0.441 11.20mm | 3.5dBi, 3dBi, 3dBic, 3.5dBi, 0dBi, 2.5dBi | Cable - 4m, LNA | 2 | AMPS, DCS, GPS, GSM, PCS, UMTS | 6 | Cellular, General ISM | Wedge | Wide B | 850MHz 900MHz 1.575GHz 1.8GHz 1.9GHz 2.1GHz | |||||||||||||||||||||||||||
![]() |
YF450112-61NF | Laird Technologies IAS | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | 10 Weeks | Bulk | 2014 | yes | Active | N Type Female | RoHS Compliant | unknown | Bracket Mount | IP67 | 12.2dBi | 250W | 1.7 | 1 | Yagi | UHF 300MHz~1GHz | 470MHz | ||||||||||||||||||||||||||||||||||||
![]() |
DCE8658WPRFSMF | Laird Technologies IAS | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | 4 Weeks | Chassis Mount | Bulk | 2009 | HD RooTenna® | Active | 1 (Unlimited) | SMA Female | RoHS Compliant | 99.06mm | Chassis Mount | IP67 | 865MHz~960MHz | 3.900 99.06mm | 8.5dBic | 3W | 3W | 1.4 | 1 | Panel | UHF 300MHz~1GHz | 912MHz | |||||||||||||||||||||||||||||||
![]() |
CAF93512 | Laird Technologies IAS | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 10 Weeks | Surface Mount | Tape & Reel (TR) | 2001 | Active | 1 (Unlimited) | Solder | RoHS Compliant | No | SMD/SMT | 2.0066mm | Surface Mount | 2.4GHz~2.5GHz | 0.079 2.00mm | 3 | Bluetooth, Wi-Fi | 1 | Bluetooth, WiFi | Chip | UHF 2GHz~3GHz | 2.4GHz | |||||||||||||||||||||||||||||||
![]() |
GSA.8830.A.201111 | Taoglas | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 8 Weeks | Active | 1 (Unlimited) | SMA Male | ROHS3 Compliant | Adhesive | IP67 | 824MHz~896MHz 880MHz~960MHz 1.71GHz~1.88GHz 1.85GHz~1.99GHz 1.92GHz~2.17GHz | 0.181 4.60mm | -0.23dBi, 0.77dBi, 0.67dBi, 0.98dBi, 0.73dBi | Cable - 2m | 3G, CDMA, DCS, EDGE, GPRS, GSM, HSPA, PCS, UMTS, WCDMA | -8dB, -9dB, -10dB | 5 | Cellular | Flat Bar | Wide B | 860MHz 920MHz 1.795GHz 1.92GHz 2.045GHz | ||||||||||||||||||||||||||||||||||
![]() |
FMA359.A.LBFCG.001 | Taoglas | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 8 Weeks | Active | 1 (Unlimited) | RP-SMA Male (1), SMA Male (2) | ROHS3 Compliant | Surface Mount | IP67 | 698MHz~824MHz 824MHz~894MHz 880MHz~960MHz 1.574GHz~1.576GHz 1.601GHz~1.603GHz 1.71GHz~1.88GHz 1.85GHz~1.99GHz 1.92GHz~2.17GHz 2.4GHz~2.5GHz 2.49GHz~2.69GHz 4.9GHz~5.85GHz | 1.869 47.48mm | -3.2dBi, -2.47dBi, -2.04dBi, 1dBic, -3.88dBi, -3.33dBi, -3.24dBi, -3.27dBi, -2.94dBi, -4.34dBi | Cable - 3m, LNA, Filter | Beidou, Galileo, GLONASS, GNSS, GPS, LTE, Wi-Fi | -6dB, -10dB | 11 | Cellular, Navigation, WiFi | Module | Wide B | 761MHz 869MHz 920MHz 1.575GHz 1.602GHz 1.795GHz 1.92GHz 2.045GHz 2.45GHz 2.59GHz 5.375GHz | ||||||||||||||||||||||||||||||||||
![]() |
ANT-GSMMQB-MMCX | RF Solutions | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 12 Weeks | Adhesive | Bulk | 2011 | Active | 1 (Unlimited) | MMCX | MMCX | RoHS Compliant | 5.0038mm | Adhesive | 150mm | 0.197 5.00mm | 1dB | 10W | 10W | Cable - 100mm | 3 | GSM | 4 | Cellular | Flat Patch | UHF 300MHz~1GHz UHF 1GHz~2GHz | 850MHz 900MHz 1.8GHz 1.9GHz | ||||||||||||||||||||||||||||
![]() |
ANT1204F005R0915A | Yageo | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | 23 Weeks | Tape & Reel (TR) | 1204 | Active | 1 (Unlimited) | Solder | ROHS3 Compliant | No SVHC | 915MHz | 50Ohm | Surface Mount | 0.063 1.60mm | 1.59dBi | 1W | General Purpose | 10dB | 1 | Chip | UHF 300MHz~1GHz | ||||||||||||||||||||||||||||||||||
![]() |
DELTA12C/X/SMAM/S/S/17 HIGH GAIN | Siretta | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 8 Weeks | Bulk | 2016 | DELTA 12C | Obsolete | Not Applicable | SMA Male | Connector Mount | 5.118 130.00mm | 5dBi | 50W | 2 | ISM | 1 | General ISM | Whip, Straight | UHF 300MHz~1GHz | 915MHz | ||||||||||||||||||||||||||||||||||
![]() |
S9028PCL180RTN | Laird Technologies IAS | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | 10 Weeks | 2011 | Active | 1 (Unlimited) | RoHS Compliant | ||||||||||||||||||||||||||||||||||||||||||||||||
![]() |
ACA-101-T | Abracon LLC | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 9 Weeks | Surface Mount | Tape & Reel (TR) | 2011 | Obsolete | 1 (Unlimited) | Solder | 4mm | RoHS Compliant | No | SMD/SMT | 2.4425GHz | 1.1938mm | 2mm | 50Ohm | Surface Mount | 2.485GHz | 2.4GHz~2.485GHz | 0.047 1.20mm | 1.09dBi | 3 | Bluetooth, WLAN | 1 | Bluetooth, WiFi | Chip | UHF 2GHz~3GHz | 2.4GHz | |||||||||||||||||||||||||
![]() |
VJ5301M868MXBSR | Vishay Vitramon | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | Surface Mount | Ceramic | Tape & Reel (TR) | 2012 | Obsolete | 1 (Unlimited) | Solder | 85°C | -40°C | 35mm | ROHS3 Compliant | CSMD | 868MHz | 1.016mm | 5mm | 50Ohm | Surface Mount | 100MHz | 920MHz | 820MHz~920MHz | 0.047 1.20mm | -1.96dBi | -3dB | 1 | Chip | UHF 300MHz~1GHz | 868MHz | ||||||||||||||||||||||||||
![]() |
2042811200 | Molex | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 13 Weeks | Tray | 2017 | 204281 | Active | Not Applicable | IPEX MHF4L | ROHS3 Compliant | Adhesive | 0.004 0.10mm | 2W | Cable - 200mm | Wi-Fi | -10dB | 2 | WiFi | PCB Trace | UHF 2GHz~3GHz SHF f > 4GHz | 2.4GHz 5GHz | |||||||||||||||||||||||||||||||||
![]() |
BB8065CR | Laird Technologies IAS | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | 4 Weeks | Base | Bulk | 2013 | Active | 1 (Unlimited) | NMO | RoHS Compliant | Base Mount | IP67 | IP67 | 806MHz~866MHz | 5dBi | 1 | Whip, Straight | UHF 300MHz~1GHz | 836MHz | ||||||||||||||||||||||||||||||||||||
![]() |
CB34S | Laird Technologies IAS | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 6 Weeks | Base | Bulk | 2007 | Active | 1 (Unlimited) | NMO | RoHS Compliant | unknown | 34MHz | 1.2446m | Base Mount | 34MHz~37MHz | 0dB | MOBILE STATION ANTENNA | 2 | 1 | Whip, Straight | VHF f < 300MHz | 36MHz | ||||||||||||||||||||||||||||||||
![]() |
ADB150C | Laird Technologies IAS | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 2 Weeks | Base | Bulk | 2007 | Active | 1 (Unlimited) | NMO | RoHS Compliant | 174MHz | Base Mount | 150MHz~174MHz | 1 | Whip, Straight | VHF f < 300MHz | 162MHz | |||||||||||||||||||||||||||||||||||||
![]() |
PAS69278-FNF2 | Laird Technologies IAS | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | 8 Weeks | 2014 | Active | 1 (Unlimited) | RoHS Compliant | ||||||||||||||||||||||||||||||||||||||||||||||||
![]() |
GPSGB1330 | PulseLarsen Antennas | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 9 Weeks | Bulk | 2016 | yes | Active | 1 (Unlimited) | U.FL (UMCC), IPEX MHF1 | ROHS3 Compliant | Surface Mount | 0.321 8.15mm | 1dBic | LNA | GPS | 2 | Navigation | Ceramic Patch | UHF 1GHz~2GHz | 1.575GHz 1.602GHz | ||||||||||||||||||||||||||||||||||
![]() |
RO5810NF | PulseLarsen Antennas | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 5 Weeks | Bulk | 2013 | Active | 1 (Unlimited) | N Type Female | ROHS3 Compliant | 418.9984mm | Connector Mount | IP67 | IP67 | 5.725GHz~5.875GHz | 16.496 419.00mm | 10dBi | 20W | 20W | 2 | 1 | Whip, Straight | SHF f > 4GHz | 5.8GHz | |||||||||||||||||||||||||||||||
![]() |
G420TN | Laird Technologies IAS | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | 6 Weeks | Chassis Mount | Bulk | 2009 | G | yes | Active | 1 (Unlimited) | TNC Male | RoHS Compliant | unknown | 420MHz | Connector Mount | 420MHz~450MHz | 10.000 254.00mm | 2.5dB | 50W | 1.5 | 1 | Whip, Straight | UHF 300MHz~1GHz | 435MHz | |||||||||||||||||||||||||||||||
![]() |
TANGO20A/3M/SMAM/S/S/26 | Siretta | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 8 Weeks | Bulk | 2001 | TANGO 20A | Active | Not Applicable | SMA Male | RoHS Compliant | SMA | 1.595GHz | Panel Mount | IP67 | 0.571 14.50mm | 28dB | 2 | GLONASS, GPS | 1 | Navigation | Puck | UHF 1GHz~2GHz | 1.592GHz | |||||||||||||||||||||||||||||||
![]() |
33-2412-07 | Tallysman Wireless | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 4 Weeks | Accutenna® | Active | Not Applicable | SMA Female | ROHS3 Compliant | Magnetic | IP67 | 1.574GHz~1.606GHz | 0.591 15.00mm | 4.25dBi | LNA | 1.8 | GLONASS, GPS | 1 | Navigation | Dome | UHF 1GHz~2GHz | 1.59GHz | |||||||||||||||||||||||||||||||||
![]() |
66089-0406 | Anaren | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | 8 Weeks | Bulk | 2010 | Active | 1 (Unlimited) | U.FL (UMCC), IPEX MHF1 | 85°C | -40°C | RoHS Compliant | 0406 | No SVHC | 433MHz | 5.9944mm | Connector Mount | 15.7mA | 3dBi | 50Ohm | COAXIAL | ANTENNA-OTHER | 1.7 | 600 kbps | 1 | YES | Whip, Straight | UHF 300MHz~1GHz | 425MHz | |||||||||||||||||||||||||||
![]() |
SXD450SFU | Laird Technologies IAS | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 8 Weeks | Chassis Mount | Bulk | 2009 | Active | 1 (Unlimited) | SFU | RoHS Compliant | 470MHz | 88.9mm | Connector Mount | 440MHz~470MHz | 3.504 89.00mm | 50W | 1.5 | 1 | Whip, Straight | UHF 300MHz~1GHz | 450MHz | |||||||||||||||||||||||||||||||||
![]() |
S24497P36RNF | Laird Technologies IAS | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | 4 Weeks | 2011 | Active | 1 (Unlimited) | RoHS Compliant | ||||||||||||||||||||||||||||||||||||||||||||||||
![]() |
DELTA1A/X/SMAM/S/S/11 | Siretta | 0.0000 |
Min: 1 Mult: 1 |
0.00000000 | download | 8 Weeks | Bulk | 2014 | DELTA 1A | Active | Not Applicable | SMA Male | RoHS Compliant | SMA | 2.1GHz | Connector Mount | 2.205 56.00mm | 3.5dBi | 2 | GPRS, GSM, UMTS | 7 | Cellular | Whip, Straight | UHF 300MHz~1GHz UHF 1GHz~2GHz | 850MHz 868MHz 900MHz 915MHz 1.8GHz 1.9GHz 2.1GHz |
-
EXE821SFU Laird Technologies IAS
EXE821SFU datasheet pdf and RF Antennas product details from Laird Technologies IAS stock available at HK JDW
Price: 0.0000
RFQ -
SP.1615.25.4.A.02 Taoglas
SP.1615.25.4.A.02 datasheet pdf and RF Antennas product details from Taoglas Limited stock available at HK JDW
Price: 0.0000
RFQ -
CFS69383P-30D43F Laird Technologies IAS
CFS69383P-30D43F datasheet pdf and RF Antennas product details from Laird Technologies IAS stock available at HK JDW
Price: 0.0000
RFQ -
MA450.K.LBICG.004 Taoglas
MA450.K.LBICG.004 datasheet pdf and RF Antennas product details from Taoglas Limited stock available at HK JDW
Price: 0.0000
RFQ -
637112 Laird - Wireless & Thermal Systems
637112 datasheet pdf and RF Antennas product details from Laird - Wireless & Thermal Systems stock available at HK JDW
Price: 0.0000
RFQ -
YF450112-61NF Laird Technologies IAS
YF450112-61NF datasheet pdf and RF Antennas product details from Laird Technologies IAS stock available at HK JDW
Price: 0.0000
RFQ -
DCE8658WPRFSMF Laird Technologies IAS
DCE8658WPRFSMF datasheet pdf and RF Antennas product details from Laird Technologies IAS stock available at HK JDW
Price: 0.0000
RFQ -
CAF93512 Laird Technologies IAS
CAF93512 datasheet pdf and RF Antennas product details from Laird Technologies IAS stock available at HK JDW
Price: 0.0000
RFQ -
GSA.8830.A.201111 Taoglas
GSA.8830.A.201111 datasheet pdf and RF Antennas product details from Taoglas Limited stock available at HK JDW
Price: 0.0000
RFQ -
FMA359.A.LBFCG.001 Taoglas
FMA359.A.LBFCG.001 datasheet pdf and RF Antennas product details from Taoglas Limited stock available at HK JDW
Price: 0.0000
RFQ -
ANT-GSMMQB-MMCX RF Solutions
ANT-GSMMQB-MMCX datasheet pdf and RF Antennas product details from RF Solutions stock available at HK JDW
Price: 0.0000
RFQ -
ANT1204F005R0915A Yageo
ANT1204F005R0915A datasheet pdf and RF Antennas product details from Yageo stock available at HK JDW
Price: 0.0000
RFQ -
DELTA12C/X/SMAM/S/S/17 HIGH GAIN Siretta
DELTA12C/X/SMAM/S/S/17 HIGH GAIN datasheet pdf and RF Antennas product details from Siretta Ltd stock available at HK JDW
Price: 0.0000
RFQ -
S9028PCL180RTN Laird Technologies IAS
S9028PCL180RTN datasheet pdf and RF Antennas product details from Laird Technologies IAS stock available at HK JDW
Price: 0.0000
RFQ -
ACA-101-T Abracon LLC
ACA-101-T datasheet pdf and RF Antennas product details from Abracon LLC stock available at HK JDW
Price: 0.0000
RFQ -
VJ5301M868MXBSR Vishay Vitramon
VJ5301M868MXBSR datasheet pdf and RF Antennas product details from Vishay Vitramon stock available at HK JDW
Price: 0.0000
RFQ -
2042811200 Molex
2042811200 datasheet pdf and RF Antennas product details from Molex stock available at HK JDW
Price: 0.0000
RFQ -
BB8065CR Laird Technologies IAS
BB8065CR datasheet pdf and RF Antennas product details from Laird Technologies IAS stock available at HK JDW
Price: 0.0000
RFQ -
CB34S Laird Technologies IAS
CB34S datasheet pdf and RF Antennas product details from Laird Technologies IAS stock available at HK JDW
Price: 0.0000
RFQ -
ADB150C Laird Technologies IAS
ADB150C datasheet pdf and RF Antennas product details from Laird Technologies IAS stock available at HK JDW
Price: 0.0000
RFQ -
PAS69278-FNF2 Laird Technologies IAS
PAS69278-FNF2 datasheet pdf and RF Antennas product details from Laird Technologies IAS stock available at HK JDW
Price: 0.0000
RFQ -
GPSGB1330 PulseLarsen Antennas
GPSGB1330 datasheet pdf and RF Antennas product details from PulseLarsen Antennas stock available at HK JDW
Price: 0.0000
RFQ -
RO5810NF PulseLarsen Antennas
RO5810NF datasheet pdf and RF Antennas product details from PulseLarsen Antennas stock available at HK JDW
Price: 0.0000
RFQ -
G420TN Laird Technologies IAS
G420TN datasheet pdf and RF Antennas product details from Laird Technologies IAS stock available at HK JDW
Price: 0.0000
RFQ -
TANGO20A/3M/SMAM/S/S/26 Siretta
TANGO20A/3M/SMAM/S/S/26 datasheet pdf and RF Antennas product details from Siretta Ltd stock available at HK JDW
Price: 0.0000
RFQ -
33-2412-07 Tallysman Wireless
33-2412-07 datasheet pdf and RF Antennas product details from Tallysman Wireless Inc. stock available at HK JDW
Price: 0.0000
RFQ -
66089-0406 Anaren
66089-0406 datasheet pdf and RF Antennas product details from Anaren stock available at HK JDW
Price: 0.0000
RFQ -
SXD450SFU Laird Technologies IAS
SXD450SFU datasheet pdf and RF Antennas product details from Laird Technologies IAS stock available at HK JDW
Price: 0.0000
RFQ -
S24497P36RNF Laird Technologies IAS
S24497P36RNF datasheet pdf and RF Antennas product details from Laird Technologies IAS stock available at HK JDW
Price: 0.0000
RFQ -
DELTA1A/X/SMAM/S/S/11 Siretta
DELTA1A/X/SMAM/S/S/11 datasheet pdf and RF Antennas product details from Siretta Ltd stock available at HK JDW
Price: 0.0000
RFQ