射频头种类和频率上限

摘自：http://www.microwaves101.com/encyclopedias/microwave-connectors

Connector type	Frequency Limit	Dielectric	Comments and history
BNC	4 GHz	PTFE	"Bayonet type-N connector", or "Bayonet Neill-Concelman" according to Johnson Components. Developed in the early 1950s at Bell Labs. Could also stand for "baby N connector".
SMB	4 GHz	PTFE	"Sub-miniature type B", a snap-on subminiature connector, available in 50 and 75 ohms.
OSMT	6 GHz	PTFE	A surface mount connector
OSX, MCX, PCX	6 GHz	PTFE	MCX was the original name of the Snap-On"micro-coax" connector species. Available in 50 and 75 ohms.
MMCX		PTFE	Micro-miniature coax connector, popular in the wire industry because its small size and cheap price.
SMC	10 GHz	PTFE	Sub-miniature type C, a threaded subminiature connector, not widely used.
SMA	25 GHz	PTFE	Sub-miniature type A developed in the 1960s, perhaps the most widely-used microwave connector system in the universe.
TNC	15 GHz	PTFE	"Threaded Neill-Concelman" connector, according to Johnson Components, it is actually a threaded BNC connector, to reduce vibration problems. Carl Concelman was an engineer at Amphenol.
N	11 GHz normal 18 GHz precision	PTFE	Named for Paul Neill of Bell Labs in the 1940s, available in 50 and 75 ohms. Cheap and rugged, it is still widely in use. Originally was usable up to one GHz, but over the years this species has been extended to 18 GHz, including work by Julius Botka at Hewlett Packard.
APC-7, 7 mm	18 GHz	PTFE	APC-7 stands for "Amphenol precision connector", 7mm. Developed in the swinging 60s, ironically a truly sexless connector, which provides the lowest VSWR of any connector up to 18 GHz.
OSP	22 GHz	PTFE	OSP stands for "Omni-Spectra push-on", a blind-mate connector with zero detent. Often used in equipment racks.
3.5 mm	26.5 GHz	Air	A precision (expensive) connector, it mates to cheaper SMA connectors.
OSSP	28 GHz	PTFE	OSP stands for "Omni-Spectra subminiature push-on", a smaller version of OSP connector.
SSMA	38 GHz	PTFE	Smaller than an SMA.
2.92 mm	40 GHz	Air	Precision connector, developed by Mario Maury in 1974. 2.92 mm will thread to cheaper SMA and 3.5 mm connectors. Often called "2.9 mm".
K	40 GHz	Air	The original mass-marketed 2.92 mm connector, made by Wiltron (now Anritsu). Named the "K" connector, meaning it covers all of the K frequency bands.
GPO, OSMP, SMP	40 GHz	PTFE	"Gilbert push-on", "Omni-spectra microminiature push-on"
OS-50P	40 GHz		Smaller version of OSP blind-mate connector.
2.4 mm	50 GHz	Air	2.4 mm, and 1.85 mm will mate with each other without damage. Developed by Julius Botka and Paul Watson in 1986, along with the 1.85 mm connector.
1.85 mm	60 GHz	Air	Mechanically compatible with 2.4 mm connectors.
V	60 GHz	Air	Anritsu's term for 1.85 mm connectors because they span the V frequency band.
1 mm	110 GHz	Air	The Rolls Royce of connectors. This connector species works up to 110 GHz. It costs a fortune! Developed at Hewlett Packard (now Agilent) by Paul Watson in 1989.