Title :
Coexistence of an Electrically Tunable DVB-H Antenna with the GSM Transmitter in a Mobile Phone
Author :
Huang, Libo ; Schroeder, Werner L. ; Russer, Peter
Author_Institution :
Tech. Univ. Munchen, Munchen
Abstract :
Integration of DVB-H into mobile terminals is of high topical interest. In many cases the physical size of the terminal and antenna is too small to allow for coverage of the full DVB-H band. This paper presents an electrically tunable DVB-H antenna which covers the frequency range 462-696 MHz with a return loss of at least 7 dB and remarkable radiation efficiency, using a volume of only 6 cm3. Emphasis is on the problem of coexistence of DVB-H with EGSM 900 operation which arises from the non-linearity of the tuning element for the DVB-H antenna. A novel combination of non-linearity mitigation techniques is proposed to overcome the problem.
Keywords :
UHF antennas; cellular radio; digital video broadcasting; mobile antennas; mobile handsets; radio transmitters; EGSM 900 operation; GSM transmitter; digital video broadcasting for handset; electrically tunable DVB-H antenna; frequency 462 MHz to 696 MHz; mobile phone; mobile terminals; nonlinearity mitigation techniques; radiation efficiency; Band pass filters; Bandwidth; Coupling circuits; Digital video broadcasting; GSM; Mobile antennas; Mobile handsets; Transmitters; Transmitting antennas; Tunable circuits and devices;
Conference_Titel :
Microwave Symposium, 2007. IEEE/MTT-S International
Conference_Location :
Honolulu, HI
Print_ISBN :
1-4244-0688-9
Electronic_ISBN :
0149-645X
DOI :
10.1109/MWSYM.2007.380376