Title :
A high performance four port PIN diode switch for television broadcasting applications
Author :
Keppke, K.D. ; Perold, W.J. ; van der Walt, P.W.
Author_Institution :
Dept. of Electr. & Electron. Eng., Stellenbosch Univ., South Africa
fDate :
9/1/1988 12:00:00 AM
Abstract :
A double-pole change-over shunt PIN diode switch for television bands IV and V is described. The switch is characterized by low insertion loss, good isolation, and excellent VSWR over an operating bandwidth of 650-860 MHz. It is suitable as a drop-in device in existing repeaters, requiring no returning of the RF circuitry. Although not designed to switch high-power signals, the switch should easily handle 50-100 W CW signals. The design is based on a short-step distributed bandpass filter, resulting in a very compact transmission-line structure
Keywords :
semiconductor diodes; semiconductor switches; television broadcasting; 50 to 100 W; 650 to 860 MHz; CW signals; RF circuitry; UHF; VSWR; bandwidth; double pole change over shunt switch; drop-in device; four port PIN diode switch; isolation; low insertion loss; repeaters; short-step distributed bandpass filter; television broadcasting; transmission-line structure; Band pass filters; Bandwidth; Circuits; Insertion loss; Radio frequency; Repeaters; Signal design; Switches; TV; Transmission lines;
Journal_Title :
Broadcasting, IEEE Transactions on
