Translate The Website (Starts on Home Page)

PayPal Logo
RA Mayes EMC Test
RAMayes Symbol   Follow Us On LinkedIn   facebook   Twitter
R A Mayes Logo and Home Page Call Nationwide 1-800-742-9447

 

Dipole Antennas

Schwarzbeck LogoTDK RF Solutions

Schwarzbeck RF Precision Dipole Antennas

pdficon large Overview Dipole Antennas

Tuned half-wave dipoles have been among the most important antennas from the beginning of rf-technique. The characteristics of half-wave dipoles have been calculable very early using the Maxwell and Hertz equations. Therefore the half wave dipole became a reference antenna.

The ideal (lossless) half-wave dipole has an isotropic gain of 2.15 dBi and an impedance of 73 Ohm. The directional pattern is circular in the H-plane, "8-shaped" in the E-plane with the maxima perpendicular on the dipole axis.

The half-power beamwidth (-3 dB) is approx. 78°.

The impedance of real dipoles is depending on the thickness/length ratio of its elements, typical values are 60-70 Ohm.

Dipoles for industrial applications are available in the frequency range from 30 MHz to up to approx. 4 GHz. The dipole elements are length variable (telescopic) or with fixed length, the latter especially above 1 GHz.

The most important applications are test site evaluations (NSA, normalized site attenuation) and the determination of ERP (Effective Radiated Power) respectively EIRP (Effective Isotropic Radiated Power). 


UHA 9105

Schwarzbeck UHA9105 tuneable halfwave dipole

Data

Tuneable UHF - Half - Wave Dipole

300 - 1000 MHz

w. telescopic elements

pdf Radiation Pattern


UHA 9125 C

Schwarzbeck 9125 C Tuneable UHF - Half -Wave Dipole

Data

Tuneable UHF - Half -Wave Dipole

with EMI -Balun

0.75 - 2 GHz with 4 sets of elements

LE = 180, 140, 100, 80 mm

pdf Radiation Pattern

pdf VSWR


UHA 9125 D

Schwarzbeck 9125D Tuneable UHF - Half - Wave Dipole

Data

Tuneable UHF - Half - Wave Dipole

with EMI - Balun

1.0 - 3 (4) GHz with 6 sets of elements

LE = 140, 114, 90, 72, 60, 48 mm

pdf VSWR


VHAP

Schwarzbeck VHAP precision dipole

Data

Schwarzbeck VHF Precision Dipole 30-300 MHz

2 sets of telescopic elements

(mostly required in pairs) CISPR 16-1-5

pdf Manual


UHAP

Schwarzbeck UHAP precision dipole

Data

UHF Precision Dipole

300-1000 MHz

(VHAP & UHAP mostly required in pairs)

CISPR 16-1-5

pdf Manual


ILS Dipole

Schwarzbeck ILS-Dipole

Schwarzbeck ILS-Dipole2

Data
Linear polarized half-wave dipole with 1:1 balun and fixed element length for fieldstrength measurements at instrument landing systems (ILS).  

Frequency range:
localizer: 108 - 118 MHz (LOC, LLC)
glideslope: 320 - 340 MHz (G/S)
Gain: 1.5 dBi

TETRA DIPOLE

Schwarzbeck Tetra-Dipole

Data

Schwarzbeck linear polarized half-wave dipole with 1:1 balun and fixed element length for  measurements at TETRA (terrestrical trunked radio) networks.

Frequency range: 340 - 480 MHz

Gain: typ. 1.5 dBi


TDK RF Precision Dipole Antennas

Log Periodic Dipole Antenna
LPDA-8003

 

TDK RF LPDA-8003 Antenna

 

800 MHz - 3 GHz

500 Watts CW

 

Data

  • Compact broadband design

  • Improved pattern symmetry

  • Reduced cross polarization

  • Fits common antenna mounts;
    EMC Automation mounts are also available

  • Individually calibrated according to ANSI C63.5 with signed certificate of calibration


Log Periodic Dipole Antenna

LPDA-0801

 

TDK RF LPDA-0801 Antenna

 

80 MHz - 1 GHz

2500 Watts CW

 

Data

TDK RF Solutions’ LPDA-0801 is a medium gain Log Periodic Dipole Array that provides strong performance over the operating frequency range of 80 MHz to 1 GHz. The LPDA-0801 features very high power handing (2.5 kW continuous) capabilities to accommodate the most extreme EMC test requirements.

  • High efficiency and low loss

  • Robust mechanical design


Log Periodic Dipole Antenna

LPDA-0803

 

TDK RF LPDA-0803 Antenna

 

80 MHz - 3 GHz

500 Watts CW

 

Data

The TDK RF Solutions LPDA-0803 Log Periodic Dipole Antenna provides strong performance over the entire frequency range of 80 MHz to 3 GHz. The LPDA-0803 features enhanced gain over standard log periodic dipole antennas (6 dBi at the low end to 8 dBi on the high end) and high power handing capabilities (500W) to accommodate a broad range of both immunity and emissions test requirements.

  • Enhanced gain over competitive designs

  • Robust mechanical and feed design

  • Individually calibrated according to ANSI C63.5 with signed certificate of calibration



Copyright © 2001-2022  R. A. Mayes Company, Inc.
An Electro Mechanical Research and Development (EMRAD) Corporation, Company

See our Privacy Policy    All the data files on our website require Adobe Acrobat Reader!