COAXIAL DEVICES
VHF / UHF coaxial circulators & isolators
Ge n e ra l d e s c rip t io n
TEMEX supplies a wide range of coaxial HF/VHF
and UHF circulators covering the frequency
range down to 27 MHz.
Designed for the wide-band application in
the 170 to 1215 MHz frequency range, TEMEX
power circulators φ series provide low insertion
loss and high isolation. They are specifically
designed to feature low 3rd order inter-
m odulation products with power up to
2000 W-CW.
TEMEX uses only in-house produced ferrite
m aterials and therefore offers state-of-the-art
features such as low-insertion loss, high
isolation in various rugged and space saving
packages :
They are suitable for telecom m unication and
broadcasting applications.
•
The “T” series is our standard design for
three port junctions. Circulators are equipped
with KMR/SMA connectors and isolators with
an internal load of 1 W average/60 W peak,
N fem ale connectors for input power higher
than 60 W-CW.
•
In order to im prove isolation, four-port
circulators and isolators are produced by
optim ally integrating two single-junction
circulators in a single package. The insertion
loss of four-port circulators includes two
pass-through ferrite junctions.
They are typically used in telecom m uni-
cations and radio-telephone applications.
•
•
Wide-band ferrite device, such as those in
the λ series package, enables coverage of
the 225 - 400 MHz band for high power up to
300 W-CW/1 kW peak.
•
Options such as configuration, frequency
range, connector type and location, tab
(drop-in) configuration, wider tem perature
range, high power, etc., are available upon
request.
New low cost coaxial devices have been
specially designed for cellular base stations.
Case of circulators and isolators are m ade
with alum inum casting in order to drastically
reduce cost and deliveries.
Standard cases versus frequency
3-Port-VHF/ UHF coaxial circulator/ isolator
3-Port power devices
TA
30
100
TO
235
230
30
φ
170 ‘1
φ
‘1
230
170
Low cost coaxial devices
λ
λ
λ
1
2
3
225
225
400
400
225
400
T2
1400
350
TD
760
960
T3
800
800
1215
100
200
300
400
500
600
700
900 1000 110 0 1200 1300 1400 1500 1600 1700 1800 1900 2000 MHz
PA
30 100
PO
4-Port-VHF/ UHF coaxial circulator/ isolator
30
210
P2
350
1400
P4
870
2000
100
200
300
400
500
600
700
800
900 1000 110 0 1200 1300 1400 1500 1600 1700 1800 1900 2000 MHz
15-21
Vol. 1
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