Passive intermodulation (PIM) in broadcast transmission systems-lessons learned and a look into the future

Author

Best, Gregor

Author_Institution

Greg Best Consulting Inc., Kansas City, MO, USA

fYear

2014

fDate

25-27 June 2014

Firstpage

1

Lastpage

7

Abstract

Passive Intermodulation (PIM) occurring in worldwide broadcast systems has only received a very small amount of attention. This paper will focus on how and where PIM occurs in broadcast systems. Known PIM sources occurring in broadcast equipment are reviewed. PIM interference examples are provided for an ATSC DTV transmitter interfering with adjacent channel receivers. Both “static” and “dynamic” PIM categories with example levels are discussed. PIM research and lessons from the cellular industry are applied to broadcast components. Further research and areas to be investigated are suggested for future development.

Keywords

broadcast communication; cellular radio; digital television; intermodulation; radiofrequency interference; television receivers; television transmitters; ATSC DTV transmitter; PIM interference; PIM sources; adjacent channel receivers; broadcast equipment; broadcast transmission systems; cellular industry; dynamic PIM category; passive intermodulation; static PIM category; Digital TV; Interference; Power transmission lines; Receiving antennas; Transmission line antennas; Transmitters; D/U ratio; Intermodulation; diode effect; harmonics; noise-like spectrum; receivers; transfer function; transmitting antenna;

fLanguage

English

Publisher

ieee

Conference_Titel

Broadband Multimedia Systems and Broadcasting (BMSB), 2014 IEEE International Symposium on

Conference_Location

Beijing

Type

conf

DOI

10.1109/BMSB.2014.6873574

Filename

6873574