ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

An Introduction to Solid Wheel Antennas

Updated on April 15, 2020
tamarawilhite profile image

Tamara Wilhite is a technical writer, industrial engineer, mother of two, and published sci-fi and horror author.

What Are Wheel Antennas?

Wheel antennas received their name for their round shape; some wheel antennas are made from a single solid disk, unlike the multiple loops of wire forming a circle that create halo antennas. Other big wheel antennas use three separate loops of wire connected with a coax with a phased harness. Turnstile antennas use two identical dipole antennas in a cross shape to provide the 360° coverage wheel antennas provide with only a single component. This article focuses on solid wheel antennas.

Wheel antennas are omnidirectional, radiating the signal evenly in all directions around the edge of the wheel. They usually have modest gain. This is in contrast to the high gain directional antennas have.

Wheel antennas can be vertically stacked in arrays fed with a phasing scheme to create vertically polarized radiation. Without this, the wheel antenna puts out omnidirectional horizontally polarized radio frequency. The actual signal of a single wheel antenna resembles a donut shape with poor signal transmission directly above and below the wheel antenna. Stacking wheel antennas is also a solution when putting out a signal at a high power level (greater than 100 watts).

Wheel antennas are essential when you want to monitor a frequency for signals from any direction. You’ll have better reception with a wheel antenna than you would several directional antennas pointed in a rough circle.

Wheel antennas can be used in addition to a high gain yagi antenna, or they can be used by themselves as an omnidirectional antenna.

Wheel antennas designed by WA5VJB
Wheel antennas designed by WA5VJB | Source

900 MHz Wheel Antennas

The 900 MHz wheel antennas can be used in UAVs. You can connect them to your UAV with a coax or soldered to a circuit board with an SMA connector. One of the benefits of the wheel antenna is that it is more durable than a dipole antenna, since it won’t get caught in tree limbs or get damaged in a UAV crash.

The 900 MHz big wheel antenna can be used as a beacon for UHF RF applications. The 33 centimeter or 900 MHz band is also used in amateur radio. This frequency range was once used for cordless phones and walking talkies but now used for FM repeaters and CW.

The typical gain for the Kent Electronics wheel antenna shown here is 2 dBi. The coaxial connector must be placed on the side without letter to avoid shorting out the tuning stub. This antenna’s typical return loss is -20 decibels at 900 MHz, which falls to -10 dB at 915 MHz.

1290 MHz Wheel Antennas

The 1290 MHz frequency is part of the L-band. The 1240 to 1300 MHz frequency range is allocated to amateur radio users. The 1300 MHz range is also used in space research and satellite communications. The frequency range is allocated as well to aeronautical radio navigation in the US.

The 1290 MHz wheel antenna by Kent Electronics resonates at around 1300 MHz depending on the SMA connector used. The wheel antenna can be tuned to 1295 MHz using a 1 pf cap put on the SMA connector. Add more chip caps and it can be tuned to 1200 MHz or 1.2 GHz.

2400 MHz Wheel Antennas

The frequencies around 2400 MHz are allocated to industrial, scientific and medical usage. This frequency range gets used for cordless phones, Bluetooth receivers, baby monitors and garage door openers. The 2.4 GHz wheel antenna design is commonly used in wireless networks like satellite TV and closed circuit television systems. Some car alarms use this frequency for their internal sensors.

The Kent Electronics 2400 MHz wheel antenna shown here has a horizontal polarization with a typical gain of 2 dBi. Return loss is around -20 dB at 2,400 MHz. Putting the antenna in a radome reduces its frequency, so to put out 2.4 GHz when the wheel antenna is placed inside a plastic housing needs to be made to produce closer to 2,500 MHz. The coax connector has to go on the side without letter so that it doesn’t short the tuning stub.

Comments

Submit a Comment

No comments yet.

working

This website uses cookies

As a user in the EEA, your approval is needed on a few things. To provide a better website experience, hubpages.com uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at: https://corp.maven.io/privacy-policy

Show Details
Necessary
HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
LoginThis is necessary to sign in to the HubPages Service.
Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
AkismetThis is used to detect comment spam. (Privacy Policy)
HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the googleapis.com or gstatic.com domains, for performance and efficiency reasons. (Privacy Policy)
Features
Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
MavenThis supports the Maven widget and search functionality. (Privacy Policy)
Marketing
Google AdSenseThis is an ad network. (Privacy Policy)
Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
Index ExchangeThis is an ad network. (Privacy Policy)
SovrnThis is an ad network. (Privacy Policy)
Facebook AdsThis is an ad network. (Privacy Policy)
Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
AppNexusThis is an ad network. (Privacy Policy)
OpenxThis is an ad network. (Privacy Policy)
Rubicon ProjectThis is an ad network. (Privacy Policy)
TripleLiftThis is an ad network. (Privacy Policy)
Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
Statistics
Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)
ClickscoThis is a data management platform studying reader behavior (Privacy Policy)