Abstract
A newly designed 806-947 MHz band rf filter has been developed for vehicular communication radio. This newly developed filter features a simple structure, miniaturized size, and light weight. The new waveguide which is the basis of the resonator is constructed from a dielectric rod having a thin central conductor, inserted between two parallel plates. The principal modes of the electromagnetic field propagating along the waveguide are the quasi-TEM mode on the lower frequency side and the quasi-TM//0//1 mode on the higher frequency side of the mode coupling frequency. Two new coupling design methods are employed: spacing control and wire control. In the spacing control method, the required amount of coupling is obtained by slightly changing the spacing between adjacent resonators. The wire control method obtains the expected amount of coupling by changing the number of equi-distantly inserted thin wires and their positions. The lowest spurious spectrum is about 2. 3 GHz. The unloaded Q (Qu) of the resonator is about 1600, and of the resonator having loop excitation, Qu is about 1000. The relative permittivity of the dielectric is 20. 0 and tan delta is 1. 1 multiplied by 10** minus **4 at 6 GHz.
| Original language | English |
|---|---|
| Title of host publication | Unknown Host Publication Title |
| Place of Publication | New York, NY |
| Publisher | IEEE |
| Pages | 181-186 |
| Number of pages | 6 |
| Publication status | Published - 1979 |
| Externally published | Yes |
| Event | IEEE Veh Technol Conf, 29th, Conf Rec of Pap - Arlington Heights, Ill Duration: 1979 Mar 27 → 1979 Mar 30 |
Other
| Other | IEEE Veh Technol Conf, 29th, Conf Rec of Pap |
|---|---|
| City | Arlington Heights, Ill |
| Period | 79/3/27 → 79/3/30 |
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ASJC Scopus subject areas
- Engineering(all)
Cite this
MINIATURIZED DIELECTRIC RADIO FREQUENCY FILTER FOR 850 MHz BAND MOBILE RADIO. / Fukasawa, Atsushi; Ashiwa, Jun; Sato, Takuro.
Unknown Host Publication Title. New York, NY : IEEE, 1979. p. 181-186.Research output: Chapter in Book/Report/Conference proceeding › Chapter
}
TY - CHAP
T1 - MINIATURIZED DIELECTRIC RADIO FREQUENCY FILTER FOR 850 MHz BAND MOBILE RADIO.
AU - Fukasawa, Atsushi
AU - Ashiwa, Jun
AU - Sato, Takuro
PY - 1979
Y1 - 1979
N2 - A newly designed 806-947 MHz band rf filter has been developed for vehicular communication radio. This newly developed filter features a simple structure, miniaturized size, and light weight. The new waveguide which is the basis of the resonator is constructed from a dielectric rod having a thin central conductor, inserted between two parallel plates. The principal modes of the electromagnetic field propagating along the waveguide are the quasi-TEM mode on the lower frequency side and the quasi-TM//0//1 mode on the higher frequency side of the mode coupling frequency. Two new coupling design methods are employed: spacing control and wire control. In the spacing control method, the required amount of coupling is obtained by slightly changing the spacing between adjacent resonators. The wire control method obtains the expected amount of coupling by changing the number of equi-distantly inserted thin wires and their positions. The lowest spurious spectrum is about 2. 3 GHz. The unloaded Q (Qu) of the resonator is about 1600, and of the resonator having loop excitation, Qu is about 1000. The relative permittivity of the dielectric is 20. 0 and tan delta is 1. 1 multiplied by 10** minus **4 at 6 GHz.
AB - A newly designed 806-947 MHz band rf filter has been developed for vehicular communication radio. This newly developed filter features a simple structure, miniaturized size, and light weight. The new waveguide which is the basis of the resonator is constructed from a dielectric rod having a thin central conductor, inserted between two parallel plates. The principal modes of the electromagnetic field propagating along the waveguide are the quasi-TEM mode on the lower frequency side and the quasi-TM//0//1 mode on the higher frequency side of the mode coupling frequency. Two new coupling design methods are employed: spacing control and wire control. In the spacing control method, the required amount of coupling is obtained by slightly changing the spacing between adjacent resonators. The wire control method obtains the expected amount of coupling by changing the number of equi-distantly inserted thin wires and their positions. The lowest spurious spectrum is about 2. 3 GHz. The unloaded Q (Qu) of the resonator is about 1600, and of the resonator having loop excitation, Qu is about 1000. The relative permittivity of the dielectric is 20. 0 and tan delta is 1. 1 multiplied by 10** minus **4 at 6 GHz.
UR - http://www.scopus.com/inward/record.url?scp=0018283455&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0018283455&partnerID=8YFLogxK
M3 - Chapter
AN - SCOPUS:0018283455
SP - 181
EP - 186
BT - Unknown Host Publication Title
PB - IEEE
CY - New York, NY
ER -