Biconical Antenna SAS-540

  • Biconical Antenna Biconical Antenna
  • Biconical Antenna Disassembled Biconical Antenna Disassembled


This Biconical antenna will provide reliable, repeatable measurements. An ideal solution and a standard workhorse of any EMC test house for compliance testing.


  • 20 MHz to 330 MHz
  • Individually Calibrated
  • FCC, CISPR and MIL-STD Testing
  • Rugged Construction
  • Three Year Warranty

CAGE Code: 54656
Schedule B: 8529.10.9000

Product Details

The A.H. Systems SAS-540 Biconical antenna operates efficiently over the frequency range of 20 MHz to 330 MHz and is designed within the MIL-STD-462 size requirements. Compact in size, this Biconical Antenna is an ideal for use in a shielded room or anechoic chamber. The antenna balun is designed using as unbalanced to balanced transformer for improved linearity response and is the standard workhorse of any EMC compliance test house. CISPR 16-1-4 specifies the Biconical antenna as the preferred antenna to cover the 30 MHz to 250 MHz range for the lowest measurement uncertainty.


Some antenna manufacturers add an unsymmetrical crosspiece to the bicohnical elements in order to solve the inherent dip at the upper frequency response. Our solution is a simple ferrite around the center post of the elements, thus eliminating changing the symmetry of the antenna. The superior symmetry of the SAS-540 biconical antenna meets the ANSI C63.5-2017 symmetry requirements.


One drawback to the biconical antenna design is the poor VSWR especially below 80 MHz. This is due to the limited size requirements spelled out in MIL-STD 462 and can be overcome by the selection of a larger element set. Another way to overcome this short fall is to add a 3 or 6 dB attenuator, this will improve the VSWR in the order of 2:1 or even better.

Radiation Pattern

Radiation Pattern The radiation pattern is a chart of the variation of the field intensity of an antenna as an angular function with respect to the axis. The radiation pattern of the biconical antennas are similar to the half-wave dipoles. They have an omni-directional response in the H-plane, and a figure eight shape in the E-plane. The H-plane beamwidth pattern makes these antennas ideal for field survey and spectrum monitoring.

Included parts:
  • SAS-540 Antenna Balun
  • 2 removeable rigid elements
  • ABC-B, Balun Clamp with 1/4-20 thread
  • Antenna Calibration Manual

* Calibration data and certificate at 1, 3 and 10 meter horizontal polarity included

Antenna Specifications

SAS-540 Biconical Antenna
Frequency Range: 20 MHz - 330 MHz
Antenna Factor: 8.5 to 21.5 dB/m
Gain: -22 to 2.8 dBi
Maximum Continuous Power: 1 Watt
Max Radiated Field: 2 V/m
Pattern Type: omni-directional
Impedance: 50 ohm (Nominal)
Connector: N-Type, female
Mounting: ABC-B (included)
Physical Dimensions:
Height: 29 in. (73.7 cm)
Width: 52.5 in. (133.4 cm)
Weight: 3.8 lbs. (1.72 kg)

Typical Antenna Data

SAS-540 Biconical Antenna

Additional Resources

SAS-540 Biconical Antenna

Operation Manual

Outline Drawing

Biconical Antenna Comparisons

Biconical Antenna Datasheet

SAS-540 Biconical Antenna Datasheet


Download the datasheet for the SAS-540 Biconical Antenna.

Download ->

Biconical Antenna Selection

Biconical Antenna Selection for Compliance Testing

Application Note

The Biconical Antenna is considered a standard workhorse for every compliance test lab. Used in a variety of applications such as radiated emissions, immunity and shielding effectiveness testing; this application note will help guide the decision process of which Biconical Antenna to purchase.


Typical EMC Formulas

Typical EMC Related Formulas

Formulas and Calculations

This Tech. Note covers frequently used conversion factors, how they are derived, and why they are used. If you need to convert from one series of units to another for any reason, this is the tech. note for you.

more ->

Shipping Information:
Carton size: 21" x 21" x 26"
Shipping Weight: 14 lbs.
* These are approximate dimensions and will vary depending on other items ordered.

Recommended Accessories

SAS-540 Biconical Antenna
31 dB Preamplifier

PAM-0202 - 31 dB Preamplifier

With at least 30dB of gain, this preamplifier will improve overall system sensitivity. Designed to meet the needs of your various testing requirements.


Plastic Tripod

ATU-514 - Plastic Tripod

The ATU-514 is a collapsible tripod is built with all non-metallic materials that will not influence your antenna measurements.


Az and El Head

AEH-510 - Az and El Head

The AEH-510 Azimuth and Elevation head is used to assist the test engineer in pointing the mounted test antenna towards the device under test. This adjustable antenna mount has a rugged 4" mounting surface with a Captive 1/4-20 male thread for mounting all of A.H. Systems and most other compliance measurement antennas.


Biconical Antenna Case

TSC-540 - Biconical Antenna Case

Custom made transit storage case for the rigid biconical Antennas.


3 Meter N/N Cable

SAC-213 - 3 Meter N/N Cable

3 Meter RF cable with N(m) to N(m) connectors. Custom lengths can be made to suit your specifications.