Drop-in Space Qualified

Space Heritage

Cobham Microwave Ferrite devices Division started its own space activity with TELECOM 2. Year after year a huge space experience has been built, with our involvment in all main European programmes and some Indian one such as INSAT.

These ferrite devices are in telecommunication payloads, and in the microwave equipment of earth observation (as ERS1&2, PPF, ASAR) or probes.

During the last 20 years, all the available technologies at Cobham Microwave for ferrite devices have passed the requirements of space activity:

1. Drop-in isolators and circulators: L, C and X band
2. Coaxial isolators and circulators: L, C and X band, with integration, SMA and N connectors
3. Waveguide isolators, circulators and loads : X, Ku, K, Ka band

Screening and Qualification

All customer specifications are welcome and custom design can be done upon request. When customer have not procurement specification, Cobham Microwave recommend to procure Dropin and coaxial isolators according to the requirements of European space agency generic specification: ESA/SCC3202 that may be procured free of charge throw the ESA web site.

L, S,C band drop-in
Typical main microwave performances

L band - T42 package

Available frequency band (MHz)	Bandwidth	Isolation	Insertion loss	VSWR
1500-1700	<10 %	18 dB	0.4 dB	19 dB

These performances should be read in operating temperature range.

S/C band - T44 package

Available frequency band (MHz)	Bandwidth	Isolation	Insertion loss	VSWR
3000-6000	<10 %	23 dB	0.2 dB	23 dB

Special heritage with Polar Platform, using drop-in at 5300 MHz for the Advance Synthetic Aperture Radar.
Maximum ratings shall not be exceeded at any time during use or storage.

Maximum ratings

N° Characteristics		Symbol	Values		Unit	Remarks
			Min.	Max.
4	Operating Temperature Range	Top	-40	85	°C
5	Storage Temperature Range	Tstg	-55	125	°C
6	Maximum tab soldering Temperature	Tsol		280	°C

X Band dropin for space application
T60 Package

Frequency band	P/N clock wise version	P/N Counter clock wise version	Performances
(MHz)
8000-8600	NJ1109-500	NJ1209-500	Bandwidth 10 % (1)
8600-9500	NJ1119-500	NJ1219-500	Bandwidth 10 % (1)
9100-10000	NJ1129-500	NJ1229-500	Bandwidth 10 % (1)
9360-9840	NJ1129-501	NJ1229-501	Bandwidth 5 % (1)

Microwaves performances

Parameter	Unit	Min	Typical	Max	Min	Typical	Max
Bandwidth	%						10%
Frequency range	MHz	8000	-	10000	8000	-	10000
Return loss at all ports	dB	17	19	-		17	-
Isolation	dB	17	19	-		17	-
Insertion Loss	dB	-	0.4	0.5	-	0.4	0.5

Maximum Ratings

N° Characteristics		Symbol	Values		Unit
			Min.	Max.
1	Forward Peak Power 10 % duty cycle	Pf	--	30	W
2	Forward CW Power	Pf	--	10	W
3	Reverse CW Power	Pf	--	1	W
4	Operating Temperature Range	Top	-40	85	°C
5	Storage Temperature Range	Tstg	-55	125	°C
6	Maximum tab soldering Temperature	Tsol		280	°C

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1. Frequency band
2. Package T42L
3. Package T44S
4. Package T60