XDA-1000 / XDA-2000 Active Directional Antennas

Active Directional Antennas for YSA-P400

The XDA-1000 and XDA-2000 combine directional reception, a switchable broadband amplifier, and real-time antenna attitude sensing for YSA-P400 spectrum analyzer field workflows. They support spectrum monitoring, signal search, interference localization, field-strength surveys, and coverage mapping from 500 MHz to 10 GHz or 20 GHz.

Use amplifier mode when additional active gain is appropriate for a lower-level signal. Manual bypass supports stronger-signal measurements and extends the practical measurement range of the antenna and connected analyzer combination.

Model Selection

Parameter	XDA-1000	XDA-2000
Frequency range	500 MHz to 10 GHz	500 MHz to 20 GHz
Typical passive gain	5 dBi	5 dBi from 0.5 to 12 GHz; 2.4 dBi from 12 to 20 GHz
Typical amplifier gain	20 dB	16 dB
Typical amplifier noise figure	1.5 dB	1.9 dB
Half-power beamwidth	66 deg at 6 GHz	68 deg at 6 GHz; 35 deg at 15 GHz
Front-to-back ratio	>15 dB	>14 dB
Calibration points	191 at 50 MHz spacing	391 at 50 MHz spacing
Maximum field strength in amplifier mode	17 V/m at 6 GHz	16 V/m at 6 GHz; 52 V/m at 15 GHz

Choose XDA-1000 for measurements through 10 GHz and its higher 20 dB typical amplifier gain. Choose XDA-2000 when the workflow requires coverage above 10 GHz.

Directional and Active Operation

Directional response helps the operator compare signal level as the antenna bearing changes. The integrated amplifier improves active sensitivity where appropriate, while bypass mode supports stronger signals. Published gain, beamwidth, front-to-back ratio, VSWR, amplifier gain, and amplifier noise figure values remain model- and frequency-dependent where stated.

YSA-P400 Antenna Workflow

The YSA-P400 interface can display antenna connection status and bypass or amplifier mode. Model-specific amplifier-on and amplifier-off antenna-factor data supports correction-profile loading for field-strength conversion.

Pitch, roll, and heading can be shown together with spectrum amplitude and field-strength information. In mapping workflows, GNSS measurement position, received signal strength, and antenna attitude can be correlated for signal search, coverage analysis, and on-site interference investigation.

Shared Mechanical and Interface Specifications

Parameter	Both models
Polarization	Linear
Typical VSWR	<2.0
RF connection	N female, 50 ohm
Measured attitude	Pitch, roll, and heading
Azimuth range	0 to 360 deg
Pitch range	-180 to +180 deg
Roll range	-90 to +90 deg
Power and host connection	USB Type-C; USB Type-C to USB Type-A host cable
Dimensions	430 x 270 x 35 mm
Weight	680 g

Typical Applications

• Signal search and interference hunting — use antenna direction, live signal level, and attitude information to narrow a possible emitter bearing.
• Field-strength surveys — load the corresponding antenna-factor data for the selected model and working mode.
• Coverage mapping — combine GNSS measurement points, received signal strength, and antenna attitude.
• Portable RF measurement — support spectrum monitoring, site surveys, pre-compliance investigations, and general RF test work with YSA-P400.

For calibrated field-strength work, confirm the connected XDA model and operating mode, then load its corresponding antenna-factor data. For high-field measurements, use bypass mode as appropriate for the connected host instrument.