aex2 | aegisel

aex2 is in design. Values marked EST are cascade estimates, not measured data.

01Simplified block diagram

One board shown. The synthesizer output can drive a second board for two phase-coherent channels.

Single conversion to I/Q replaces dual conversion; one tuning synthesizer instead of two
On-chip calibration of DC offset, I/Q gain and phase
5-band preselector above 500 MHz, after the LNA

Parameter	on ASR34	on aes
Frequency range	RX 1 MHz – 6 GHz; TX 50 MHz – 6 GHz
RX channels	1 complex (I/Q) per board; 2 coherent with two boards
Bandwidth	~50 MHz	~80 MHz
Noise figure	2.4–4.9 dB, 0.5–6 GHz; 6.8 dB, 20–500 MHzEST
Input IP3	−5 to +5 dBm max gain; +16 to +21 dBm LNA bypassedEST
Image rejection	~60 dB after calibration (37 dB uncalibrated)EST
TX output	≥ +5 dBmEST
Coherence	LO in / out between boards; cal tone into the RX input
Hosts	ASR34 (2 × AD9862), aes (2 × AD9963)

Parameter	aex2	aex	Ettus UBX
RX range	1 MHz – 6 GHz	1 MHz – 6 GHz	10 MHz – 6 GHz
NF, 1.5–4 GHz	2.5–2.8 dBEST	~4 dBEST	4–5 dB
NF, 4–6 GHz	≤ 4.9 dBEST	~4 dBEST	5–7 dB
Preselection	5 bands + VHF + HF	8 bands	2 paths
I/Q imbalance	~ −60 dBcEST	n/a (IF filter)	< −30 dBc

Evaluation and integration enquiries: info@a2e.tech

aex2 is a product of A2E Tech Limited (aegisel), Edinburgh, UK. UBX figures from the Ettus Research data sheet.

Specifications subject to change without notice. Rev 0.1, 7 October 2026.