Technical Note C-Band Dynamic Depressed Collector (DDC) Technology Now you can have it all: SuperLinear® HPA cost savings in C-Band WITH full CW power. = + SuperLinear TWTA CW TWTA NEW DDC TWTA! More than a decade ago, CPI introduced a simple yet revolutionary product: the SuperLinear® high power amplifier (HPA). As the only fully vertically integrated HPA manufacturer in the world, we were able to optimize the pairing of a CPI-manufactured traveling wave tube (TWT) and the CPI manufactured HPA power supply. This created significant power efficiency improvements, which in turn led to advancements in the amplifier’s size, weight and reliability and cooling structure. However, not all system operators have been in a position to reap the efficiency benefits that SuperLinear® TWTAs offer. Since SuperLinear® HPA technology sacrifices the ability to run at peak power (Psat) so that maximum efficiency can be achieved in the linear operating performance range, those who require occasional full peak output power have had to rely on traditional HPAs. But with CPI’s new DDC technology, that has changed: no longer must you choose between high efficiency and high power. For many full-time operators, this technology has led to prime power cost reductions of thousands of dollars per year per amplifier. HVAC costs and UPS requirements have also been reduced. For other operators, the smaller footprint of the HPAs has allowed for more efficient and compact earth station designs. CPI SuperLinear TWTAs are a very popular choice for: INTRODUCING DDC TECHNOLOGY • Fixed earth stations with high energy costs • Mobile uplinks for commercial and military where size and weight are a premium; and • Systems driven by generators which consume valuable fossil fuels. The SuperLinear® TWTA is regularly chosen over both GaN SSPAs and klystron amplifiers by many operators because it simply makes good technical and business sense to do so. With the patented Dynamic Depressed Collector (DDC) technology from CPI, you can alternate between highest efficiency and CW modes on the same amplifier at the touch of a button. For more autonomous systems, the HPA can automatically select the best mode of operation based on your requirements. As with SuperLinear HPAs, cost savings are quite dramatic versus traditional TWTAs when operating at linear power (see table on page 2), but when breakthrough power is needed, the DDC HPA delivers that as well. 811 Hansen Way, PO Box 51625 Palo Alto, CA 94303 USA tel: +1 (650) 846-3803 fax: +1 (650) 424-1744 e-mail:[email protected] website:www.cpii.com/satcom Technical Note Summary Dynamic Depressed Collector (DDC) Technology DDC amplifiers are very appropriate for applications that require occasional operation at high output power levels, such as: • TT&C and IOT users who need max power regardless of linearity • Uplinkers on the edge of a beam or in rain fade conditions who rely on full power to make their links reliable • Single carrier users who want to push higher than 3 dB backoff CPI is the world’s largest and oldest HPA manufacturer, providing a full range of satellite uplink amplifiers for all major commercial frequency ranges, including SSPAs, TWTAs, and KPAs. Contact CPI today to see how you can benefit from CPI’s products, experience, and reliability. The technology is currently available on the CPI C-band 2.25 kW rack-mount TWTA, with more frequency and power options to follow in 2016. Line Voltage (264 VAC) C-Band Power Consumed, CW Mode (kVA) C-band Power Consumed, SL Mode (kVA) RF Output Power (W) Annual Savings, Prime Power (W) No RF 3.260 2.852 0 408 $894 $8,935 45 dBm 3.351 2.770 32 581 $1,272 $12,724 48 dBm 3.398 2.742 63 656 $1,437 $14,366 51 dBm 3.407 2.755 126 652 $1,428 $14,279 54 dBm 3.464 2.929 251 535 $1,172 $11,717 57 dBm 3.967 3.482 501 485 $1,062 $10,622 60 dBm 4.600 4.245 1000 355 $777 $7,774 61 dBm 4.972 N/A 1259 N/A N/A N/A 62 dBm 5.355 N/A 1585 N/A N/A N/A 63 dBm 6.072 N/A 1995 N/A N/A N/A Yearly Cost Savings at $0.25 per kWH 10 Year Savings Typical cost savings, DDC in SuperLinear mode vs. CW 2.25 kW C-Band HPA Patent Information Dynamic Depressed Collector (DDC) technology is patented under U.S. patent number 7,368,874 B2, dated May 6, 2008 MKT 414, ISSUE 3 dated OCT 2015