Abstract: An electronic device may include an antenna that conveys wireless signals at frequencies greater than 100 GHz. The antenna may include a radiating element coupled to a uni-travelling-carrier photodiode (UTC PD). An optical path may illuminate the UTC PD using a first optical local oscillator (LO) signal and a second optical LO signal. An optical phase shift may be applied to the first optical LO signal. A Mach-Zehnder modulator (MZM) may be interposed on the optical path. During signal transmission, the MZM may modulate wireless data onto the second optical LO signal while control circuitry applies a first bias voltage to the UTC PD. During signal reception, the control circuitry may apply a second bias voltage to the UTC PD that configures the UTC PD to convert received wireless signals into intermediate frequency signals and/or optical signals.

Abstract: In one embodiment, a system wide static global stack pool in a contiguous range of random access memory is generated, a block of memory in the system global pool is assigned to a thread of a running process, and the thread stores local variable information in static global stack pool, such that the local variable is hidden from a stack frame back-trace. In one embodiment, a dynamically allocated data structure in system heap memory is generated, the data structure is locked to ensure atomic access, a block of memory in the data structure is assigned to a thread of a process, the data structure is unlocked, and the thread stores local variable information in static global stack pool, such that the local variable is hidden from a stack frame back-trace.