Application of high-thermal-conductivity diamond for space phased array antenna

Figures & data

Figure 1. Schematic diagram of the thermal control design based on a diamond film and a photograph of the high-thermal-conductivity diamond film.

Table 1. Temperature simulation results of the transceiver transmit/receive (T/R) module.

Thermally conductive material	Material thermal conductivity (W/ (m·K))	Temperature range of all T/R modules (°C)	Temperature gradient of all T/R modules (°C)
Aluminum alloy	121	16.2–42.3	25.1
Red copper	385	15.6–29.1	14.5
Aluminum–Diamond	450	15.5–26.1	10.2
Copper–Diamond	520	15.4–22.5	7.1
Bulk graphite	750	15.4–21.6	5.2
Diamond	1500	15.3–20.1	3.1

Figure 2. (a) Fracture morphology and (b) laser Raman spectrum of the diamond film.

Figure 3. Measured masses and thermal conductivities of diamond films.

Figure 4. Photograph of the antenna during the whole-system-level thermal balance test.

Figure 5. Thermal analysis temperature mapping image.

Figure 6. Flight temperature results as function of days of the antenna.