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3232Rectangular Waveguide Sizes
https://rfsims.com/rectangular-waveguide-sizes/
https://rfsims.com/rectangular-waveguide-sizes/#respondTue, 01 Jun 2021 17:45:29 +0000https://rfsims.com/?p=2480

A rectangular waveguide is a hollow conductive metal pipe with a cross section of rectangular shape that guides electromagnetic waves with minimal loss of energy.

The inner dimensions of the waveguide determine the cutoff frequency. The cutoff frequency is the lowest frequency at which the waveguide can operate. In rectangular waveguide, the waveguide width determines the lower cutoff frequency.

The Electronic Industries Alliance (EIA) defined WR designations for standard rectangular waveguides. The designator for a size consists of the letters WR followed by numerals. The letters “WR” stand for Waveguide Rectangular and the number that follows “WR” is the width of the waveguide opening in mils, divided
by 10.

The table below gives the details on the various waveguide sizes and their recommended frequency range.

EIA name

Frequency range

Inner dimensions

WR2300

0.32GHz – 0.45GHz

23in × 11.5in

WR2100

0.35GHz – 0.50GHz

21in × 10.5in

WR1800

0.45GHz – 0.63GHz

18in × 9in

WR1500

0.50GHz – 0.75GHz

15in × 7.5in

WR1150

0.63GHz – 0.97GHz

11.5in × 5.75in

WR975

0.75GHz – 1.15GHz

9.75in × 4.875in

WR770

0.97GHz – 1.45GHz

7.7in × 3.85in

WR650

1.15GHz – 1.72GHz

6.5in × 3.25in

WR510

1.45GHz – 2.20GHz

5.1in × 2.55in

WR430

1.72GHz – 2.60GHz

4.3in × 2.15in

WR340

2.20GHz – 3.30GHz

3.4in × 1.7in

WR284

2.60GHz – 3.95GHz

2.84in × 1.34in

WR229

3.30GHz – 4.90GHz

2.29in × 1.145in

WR187

3.95GHz – 5.85GHz

1.872in × 0.872in

WR159

4.90GHz – 7.05GHz

1.59in × 0.795in

WR137

5.85GHz – 8.20GHz

1.372in × 0.622in

WR112

7.05GHz – 10GHz

1.122in × 0.497in

WR102

7.00GHz – 11GHz

1.02in × 0.51in

WR90

8.20GHz – 12.40GHz

0.9in × 0.4in

WR75

10.00GHz – 15GHz

0.75in × 0.375in

WR62

12.40GHz – 18GHz

0.622in × 0.311in

WR51

15.00GHz – 22GHz

0.51in × 0.255in

WR42

18.00GHz – 26.50GHz

0.42in × 0.17in

WR34

22.00GHz – 33GHz

0.34in × 0.17in

WR28

26.50GHz – 40GHz

0.28in × 0.14in

WR22

33.00GHz – 50GHz

0.224in × 0.112in

WR19

40.00GHz – 60GHz

0.188in × 0.094in

WR15

50.00GHz – 75GHz

0.148in × 0.074in

WR12

60GHz – 90GHz

0.122in × 0.061in

WR10

75GHz – 110GHz

0.1in × 0.05in

WR8

90GHz – 140GHz

0.08in × 0.04in

WR6

110GHz – 170GHz

0.065in × 0.0325in

WR7

110GHz – 170GHz

0.065in × 0.0325in

WR5

140GHz – 220GHz

0.051in × 0.0255in

WR4

172GHz – 260GHz

0.043in × 0.0215in

WR3

220GHz – 330GHz

0.034in × 0.017in

WR2

325GHz – 500GHz

0.020in × 0.010in

WR1.5

500GHz – 750GHz

0.0150in × 0.0075in

WR1

750GHz – 1100GHz

0.010in × 0.005in

]]>https://rfsims.com/rectangular-waveguide-sizes/feed/0List of Online RF and Microwave Calculators
https://rfsims.com/list-of-online-rf-and-microwave-calculators/
https://rfsims.com/list-of-online-rf-and-microwave-calculators/#respondSat, 19 Dec 2020 16:54:16 +0000https://rfsims.com/?p=2296

A list of online RF and microwave calculators has been gathered and categorized in this post as follows:

]]>https://rfsims.com/list-of-online-rf-and-microwave-calculators/feed/0SMA Connector in RF Simulations
https://rfsims.com/sma-connector-in-rf-simulations/
https://rfsims.com/sma-connector-in-rf-simulations/#commentsSat, 24 Oct 2020 06:02:05 +0000http://rfsims.com/?p=2163

INTRODUCTION

SMA (Sub-Miniature version A) connectors are semi-precision coaxial RF connectors developed in the 1960s as a minimal connector interface for coaxial cable with a screw-type coupling mechanism. The connector has a 50Ω impedance. SMA is designed for use from DC (0Hz) to 18GHz, and is most commonly used in microwave systems, hand-held radio and mobile telephone antennas, and more recently with WiFi antenna systems and USB software-defined radio dongles.

USING SMA IN SIMULATIONS

For simulating purpose, rfsims assumes the SMA connector uses a polytetrafluoroethylene (PTFE) dielectric as the insulator. The dielectric constant of PTFE is around 2.08.

The diameter of the inner and outer conductors are shown in the figure below. It is noted that all dimensions are in millimeters.