Uncertain Times for DefenseADCs and DACs Penetrate Sacred Ground
By Barry Manz

The impact of converting analog signals to digital form is one of the greatest advances the electronics industry has ever achieved.

Defense News

Northrop Grumman MMICs Speed AEHF Production
Northrop Grumman has fabricated more than 36,000 MMICs covering frequencies from 300 MHz to 300 GHz for the U.S. Air Force's fifth and sixth Advanced Extremely High Frequency (AEHF) satellites, speeding production of both spacecraft, according to Space Daily.

Article Highlights China Cruise Missile Threat
While the world focuses on China’s ballistic missiles, the country is rapidly developing advanced capabilities for its cruise missiles, according to The National Interest. This is occurring at the same time the U.S. Navy has limited the type and quantity of its own anti-ship cruise missiles, according to the article.

Iran Claims It Reverse-Engineered RQ-170 UAV
Iran says it has copied announced on Sunday that it has copied an RQ-170 Sentinel UAV that it says the country "commandeered" in 2011, after his allegedly being "brought down by the Iranian Armed Forces' electronic warfare unit" in December 2011, according to Iran's Tasnim News Agency. That Iran captured the UAV is not in doubt: U.S. President Barack Obama asked Iran sent to return it after it was captured.

Israeli Navy Gaining Greater Capabilities
The Israel Navy has begun a program to enhance its sea-to-surface missile capabilities, a senior naval source told The Jerusalem Post, who said that the efforts were part of a planned program to increase the role of the navy in integrated warfare capabilities.

House House to Keep A-10, Other Programs
The House Armed Services Committee (HASC) is opted to fund a broad array of projects and has stated its goal of protecting every possible defense system. For example, the committee left the Lockheed Martin F-35 Joint Strike Fighter largely intact and up the funding for Boeing's EA-18G Growler electronic attack aircraft.

EW Development Key Element of 2015 Budget
The proposed defense budget may be leaned out but electronic warfare will receive considerable funding as the need for it is growing, according to an interesting story in the LA Times.

Insight into Hypersonic Weapons
An article in The Interpreter published by the Lowy Institute for International Policy contains an interview by Harry Kazianis, a non-resident senior fellow at the China Policy Institute (University of Nottingham) with John Stillion, a senior fellow at the Center for Strategic and Budgetary Assessments (CSBA) into the workings of hypersonic weapons.

Products for Defense
Multi-Octave Ultra Wideband Amplifier
Model AF00120243A is a multi-octave ultra wideband amplifier with excellent gain flatness and low power consumption. It operates from 0.01 to 20 GHz, has 24 dB gain with maximum gain variation of +/-1.5 dB, noise figure of 3 dB, P1dB output of +8 dBm, and current draw of 90mA at +5V bias. This amplifier comes in a hermetically sealed package with removable connectors for drop-in assembly and designed for both military and commercial applications.
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Ultra-Broadband and Millimeter Wave Low Noise Amplifiers
A new line of high frequency, ultra-broadband and millimeter wave low noise amplifiers (LNAs) offers very low noise figure levels, typically between 2.5 and 3 dB across the entire band, making them perfectly suited for use in applications such as electronic warfare, instrumentation, fiber optic communication systems, military communications, radar, SATCOM, point-to-point radio links, telecom and R&D. This new release includes 17 models covering multi-octave bandwidths with flat gain response, and features highly efficient GaAs PHEMT semiconductor technology. Fifty ohm hybrid MIC circuits are enclosed in environmentally sealed metal packages with nickel or gold plating. These LNAs come with either stainless steel SMA or 2.92mm connectors and some packages are hermetically sealed with field replaceable connectors, making these units very durable and able to withstand harsh environmental conditions. The 2.92mm connectorized models operate to 40 GHz. The new ultra-broadband and millimeter wave LNAs have IP3 levels as high as +42 dBm, low VSWR and are unconditionally stable. DC voltage supply ranges from +12 to +15 Vdc while bias current ranges from 80 to 1300mA. The voltage supply is internally regulated. The broadband low noise amplifiers are guaranteed to operate over a wide temperature swing from -20 to +70ºC.
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Microwave Power Module
The dB-4118 is a Microwave Power Module (MPM) operating in the frequency range of 6 to 18 GHz. This MPM is a power amplifier that provides 75/100W CW RF output power. The RF signal path consists of a solid state amplifier and a vacuum power booster. The power conditioner for generating all voltage needed for the operation of the RF devices and for housekeeping uses low-noise power supply topology incorporating high-efficiency, solid state power conversion circuits. A high-speed modulator is incorporated for pulse modulation of up to 10 KHz. This compact, conduction-cooled MPM is designed to operate in military airborne environments. Applications include electronic countermeasures (ECM), electronic warfare (EW) simulation, radars, multi-band communication systems, and EMI/EMC tests.
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New x2 Frequency Multiplier Offers High Output Power and Low Spur Levels
The CMD214 is a 24 to 36 GHz (output) active x2 frequency multiplier in die form. It accepts input signals in the range of 12 to 18 GHz and provides output to the second harmonic (24 to 36 GHz) at a level of +17 dBm. Isolations to the fundamental and third harmonics are greater than 32 dBc and 25 dBc, respectively. Typical input drive level for the CMD214 is +14 dBm, although the multiplier will operate at levels as low as +11 dBm. Bias conditions are Vdd=5V @ 40mA, and Vgg= -1.8V, and Vgg2 = -0.8V. All ports are matched to 50 ohms and no off-chip components are required for operation, aside from bypass capacitors on the gate and drain bias lines. Ideal applications for the CMD214 are point-to-point and point-to-multipoint radios, military and space, and test instrumentation.
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High Power SP2T 100W Reflective PIN Diode Switch
The MASW-011055 is a high power PIN diode SP2T switch with industry leading linearity in common anode configuration, operating over the 0.03 to 3 GHz frequency range. This switch is ideally suited for high power military and civilian radio applications requiring higher CW and pulsed power operation for land mobile radio applications. The company enables the connections that ensure high data-density network performance from L-Band to Ka-Band, with its analog RF, microwave and millimeter wave innovations that optimize wireless bandwidth for clear, uninterrupted signals even across remote locations. The MASW-011055 is capable of handling 100W CW incident power at a base plate temperature of 85ºC. Covering 30 MHz to 3 GHz, the device delivers 51 dB isolation at 2 GHz with insertion loss of 0.35 dB at 2 GHz, providing an ideal high-performing solution for high-performance applications. The MASW-011055 is manufactured using the company’s hybrid manufacturing process, featuring high voltage PIN diodes and passive devices integrated in a 5mm HQF 12-lead package. It is RoHS compliant and 260ºC reflow compatible.
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Surface Mount Bandpass Filter
The SXBP-27R5+ is a 50 ohm bandpass filter fabricated using SMT technology. Covering 27.5 MHz +/-3.5 MHz, these units offer good matching within the passband and high rejection (65 dB typical). The unit uses miniature high Q capacitors and wire welded inductors for high reliability. In addition, it has repeatable performance across production lots and consistent performance across temperature. Features also include good VSWR (1.4:1 typical), low insertion loss (1.3 dB typical), and a miniature shielded package. Suitable for military and avionics radar systems.
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New Technology for YIG Band-Reject Filters
A new line of YIG tuned band-reject filters covers the frequency range of 125 MHz to 18 GHz. Powered by a patent-pending technology that overcomes several of the longtime design limitations inherent to YIG band-reject, or “notch” filters, the new product line delivers several major performance advancements that are unparalleled to date in the industry. Used primarily for electronic warfare (EW), electronic countermeasures (ECM), and microwave receiver applications in military markets, some of the major performance advantages of the new product line are increased minimum rejection bandwidths and notch depth at lower frequencies vs. standard band-reject filters; a reduction in the maximum 3 dB bandwidth at higher frequencies vs. standard band-reject filters; a reduction in spurious responses across the board; and higher frequency bands available up to 20 GHz.
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Compact Broadband Directional Coupler
Model 102020006 is a compact broadband directional coupler offering 6 dB of coupling over the frequency range of 2.0 to 20.0 GHz in a single, compact and lightweight package. It is uniquely designed for systems applications where external leveling, precise monitoring, signal mixing or swept transmission and reflection measurements are required. These couplers offer solutions for many applications, including electronic warfare (EW), commercial wireless, SATCOM, radar, signal monitoring and measurement, antenna beam forming, and EMC testing environments.
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MMD March 2014

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Current Articles

Cut the Defense Budget? Sure, No Worries
The Obama administration and the President himself have always believed that the Department of Defense is like every other government agency: in tough economic times its budget must be cut like everything other agency.

HF SIGINT: A Return from the Dead?
Winston Churchill’s assessment of Ultra in winning World War II was joined by those of then-General Dwight D. Eisenhower who credited it as “decisive” and later by British intelligence official historian Sir Harry Hinsley, who flatly stated that it shortened the length of the war by “not less than two years and probably by four years.

Digital Technology is Removing the RF-to-Digital Divide
While defense systems are far from the first to realize the benefits of digital technology, they nevertheless obtain extraordinary benefits from it. However, one of greatest challenges remains the transformation of analog signals captured over the air into digital data streams--without using large amounts of intervening RF and microwave hardware.

The CDAA Antenna and the Wullenweber
A CDAA (Figure 1) of which the Wullenweber is a type, consists of a group of omnidirectional antennas symmetrically spaced about the periphery of a circular reflector screen. The location of each antenna with respect to the screen and to the adjacent antenna is such that by using a suitable antenna output scanning system, the array provides high unidirectional gain in all directions of azimuth.

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