AIM-TTi is offering a spectrum analysis up to 6 GHz that fits in your hand.
The model PSA3605 covers 10 MHz to 3.6 GHz and the model PSA6005 covers 10 MHz to 6 GHz, and both offer resolution bandwidths from 300 Hz to 10 MHz in a 1:3:10 selection, according to the company. The units have a zero span mode and a built-in demodulation for AM and FM. Trace modes include normal, peak hold, and trace average.
The units also include live and reference traces, two markers, frequency counter function, frequency and instrument state presets, unlimited storage of waveforms, user assignable file names, and real time clock stamping; USB ports are included for flash drives and PC connection and control, and the battery will last up to three hours, according to AIM-TTi.
With option U02, the features included are high resolution scan mode with up to 210,000 points with pan/zoom, limit lines, limit patterns with limit comparator, data logging of peak values, automatic measurements for CP, ACPR, and OBW, waveform demodulation for AM/FM signals, sweep triggering from an external trigger, compensation tables and fixed offsets.