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
Microwave Vector Test System Model PCT306 Microwave Vector Test System is a self-contained computer controlled measurement system used for testing RF and microwave passive devices utilized in helicopters, aircraft, ships, submarines and militarized vehicles. The 50 ohm system, covering the frequency range of 30 KHz to 26.5 GHz, accurately measures all S-parameters, scalar insertion loss, VSWR and distance to fault (DTF) of RF and microwave cable assemblies under harsh environments. It is designed to withstand vibration, shock and varied temperature and humidity conditions. The system is packaged within a small transit case and is capable of running off its own internal battery supply or can be connected to any AC outlet. The portable test set is ideal for rapid integrity checks or troubleshooting coaxial cable runs, as well as antennas and other passive devices from the flight line or in depot and field maintenance facilities. The design of the PCT306 is based on the company’s field-proven Cable Test Systems used over a decade within the CH-47 Chinook and V-22 Osprey rotorcraft production facilities. Each test set can be pre-programmed with scores of antenna, coaxial cable and other device performance specifications. These specs are used by a test operator to test and verify performance of critical cable and devices used in C5ISR avionic systems.
In-Phase Technologies
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High Performance Single Stage EMI Filter The LCR F19374, a high performance single stage EMI filter, was designed exclusively for use with the Excelsys Technologies’ power supplies. It helps bring systems in compliance with MIL-STD 461F (a U.S. military standard set to test for electromagnetic compatibility), as well as CE101 and CE102 conducted emission standards under various loads. The filter was created to improve conducted emission capability that assists designers in developing products that meet these standards. The LCR F19374 is ideal for demanding defense and aerospace industrial applications.
Astrodyne Corporation
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Ultra-Broadband Ceramic Capacitors The 01005BB104 and 0201BB104 ultra-broadband 100 nF multilayer ceramic capacitors cover 16 KHz to beyond 65 GHz. The 01005BB104—the industry’s smallest 100 nF broadband characterized for RF performance—has a case measuring (mils) 16 x 8 x 8 and offers resonant-free RF coupling/DC blocking from 16 KHz (lower 3 dB frequency) to beyond 65 GHz with <1 dB insertion loss and <-15 dB return loss on suitable substrates. It is rated at a DC working voltage (WVDC) of 4.0 and is available in a nickel-tin termination. The 0201BB104 has a case measuring (mils) 24 x 12 x 12, and offers resonant-free RF coupling/DC blocking from 16 KHz (lower 3 dB frequency) to beyond 65 GHz with <1.3 dB insertion loss and <-15 dB return loss on suitable substrates. Insertion loss to 40 GHz is typically <0.6 dB, with return loss <-20 dB. It is rated at a DC working voltage of 16.0 and is available in nickel-tin and gold terminations.
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Night Vision Device Test Set A new Night Vision Device (NVD) test set helps military personnel determine the quality of function of standard Gen II and Gen III night vision devices. Designed to test goggles, weapon sights, and drivers’ viewers, the NVD test set (#A3139775/NSN 6625-01-323-9584/TS-4348/UV) can be used in the field, offering soldiers a “go” or “no-go” response to ensure that Gen II and Gen III night vision devices are working per specifications. It provides a Near Infrared (NIR), uniformly-illuminated target within the unit that indicates if the user’s night vision device is out of calibration or not performing accurately. A toggle switch allows users to select high and low light level conditions, while a second toggle switch allows users to choose between Gen II and Gen III night vision devices. The NVD test set meets MIL-STD 810 requirements for shock and vibration as well as MIL-STD-461 EMI/EMC requirements. The resolution target of the widely accepted 1951 USAF resolution test pattern conforms to MIL-STD-150A.
API Technologies
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High Power WR28 Waveguide Dual-Channel Rotary Joint The new AM28RJD dual-channel rotary joint provides an effective means of reducing component count and saving space and weight in the compact antennas that are used for Ka-band high-data-rate SOTM (satellite-on-the-move) communication systems. Particularly suitable for military or commercial airborne systems such as SatCom uplinks in unmanned aerial vehicles, the new rotary joint features a high power/low-loss WR28 waveguide transmit channel, together with a coaxial receive channel offering a high current rating of 2A at 24VDC, which enables it to power the antenna’s LNB and servo motors without the need for additional slip rings. The center transmit channel has a frequency range of 29 to 31 GHz, with an average power rating in excess of 50W, a typical insertion loss of just 0.5 dB and a maximum VSWR of 1.7:1. The receive channel can handle frequencies up to 3 GHz at an average microwave power of 1W, and its typical VSWR and insertion loss are specified as 1.5:1 and 0.25 dB, respectively.
Link Microtek
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High Power SP3T 100W Reflective Switch The MASW-011030 is a high power PIN diode SP3T switch in a common anode configuration, operating from 30 MHz to 3 GHz. It features low insertion loss (0.35 dB @ 2 GHz) and excellent linearity with low DC consumption. This device is capable of handling 100W CW incident power at a base plate temperature of 85ºC. It is ideal for use on land mobile radio and MIL-COM applications that require higher CW and pulsed power operation. The MASW-011030 is manufactured using the company’s hybrid manufacturing process featuring high voltage PIN diodes and passive devices integrated in a 7mm HQFN 16-lead plastic package.
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Low Cost, Ultra-Reliable LTCC Mixers Ultra-Rel® MAC-family mixers close the gap between commercial budgets and the costs typically associated with hi-rel components. Qualified for an extensive list of MIL-STD, JESD, and other specifications, these rugged, hermetically sealed ceramic mixers are ideal for situations where long term exposure to humidity, dust, airborne contaminants, and changing environments are a concern. The MAC model family consists of 17 models covering RF/LO frequencies ranging from 0.3 to 12 GHz, IF frequencies from DC to 2 GHz, and LO power levels from +4 to +17 dBm. Utilizing the latest developments in LTCC ceramics, multilayer distributed circuitry, and automated processing, all models come in tiny packages (0.3 x 0.25 x 0.06”) with low parasitics and excellent repeatability. They provide low, flat conversion loss (as low as 5.8 dB) across broad bandwidths, L-R isolation as high as 40 dB, and outstanding thermal stability, rated for operation from -55 to +125ºC.
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Two-Way and Four-Way Broadband Power Combiners A completely new line of broadband RF power combiners is the perfect complement to systems using components such as power amplifiers, antenna feeds, attenuators and switches. A special area of usage for these power combiners is in combining individual power amplifiers together into a large power block in an amplifier system. These new RF power combiners are offered in the popular 2-way and 4-way configurations and deliver high power up to 600W and operate over a broad temperature range between -55 to +85ºC, expanding the versatility of this product offering to a wide range of military and commercial applications. They offer frequency ranges from 20 MHz to 6 GHz, low insertion loss from 0.35 to 1 dB and low VSWR up to 1.30:1. Other features include excellent amplitude and phase balance, high power handling, good isolation levels and rugged packaging.
Pasternack Enterprises
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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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