Abstract: Electronics for a shock-hardened device, in particular a data recorder, incorporating non-volatile memory. The device has the functional elements: a signal conditioning circuit, an oscillator, an analog-to-digital converter (ADC), a field programmable gate array (FPGA), a trigger, and a non-volatile memory incorporating both electrically erasable programmable read only memory (EEPROM) and fast static random access memory (SRAM). As a recorder, the electronics enable efficient and reliable data recording in extreme shock environments, e.g., those involving dynamic testing of weapons such as target penetrating bombs or dual-stage warheads. It also provides for data retention upon loss or shutdown of power to the unit and yields high mean time between failures (MTBF) figures in more benign environments.

Abstract: Provided is a low-cost robust antenna that may be discreetly integrated into an article of clothing so that it may be suitable for comfortable use with that article of clothing. The antenna is fabricated from off-the-shelf materials, some of which are commonly available at retail outlets. It may provide the same wear as a good quality piece of clothing. It also reduces electromagnetic coupling with the wearer's body, reduces apparel weight and bulk, and increases performance when compared to comparable existing systems. The frequency response, gain, or size and shape of the antenna are adjustable, within reason, to user requirements.