ArtsAutosBooksBusinessEducationEntertainmentFamilyFashionFoodGamesGenderHealthHolidaysHomeHubPagesPersonal FinancePetsPoliticsReligionSportsTechnologyTravel

Multiband Microstrip Antennas in Wireless Communication

Updated on September 18, 2020
tamarawilhite profile image

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

Introduction

Multiband Microstrip Antennas or MMA are the literal backbones of wireless communications. Let's review what MMA antennas are and how they are used.

Uses of Multiband Microstrip Antennas

Multiband microstrip antennas are used in vehicle information and communication systems which provide traffic and travel information to drivers. Dedicated Short Range Communications antennas are microstrip antennas that communicate identification information to nearby receivers.

These antennas are used in parking access control systems and electronic toll collection, recording the passage of cars through an unmanned toll both while billing the user's account for each tollgate passed

Microstrip antennas are also used in hand held cell phones.

How Do Multiband Microstrip Antennas Work?

Individual microstrip antennas resemble a resonating cavity with open side walls, vibrating in response to the frequency it is designed to receive. Microstrip or slot-array antennas are one half of a wavelength long.

For cell phones operating at 800 Megahertz and receiving a wavelength of 37.5 centimeters, the microstrip antenna to receive the signal would be 18.75 centimeters long. Stacking microstrip antennas along the central cavity creates multiband microstrip antennas or MMAS which receive signals from several radio frequency bands.

MEM switches turn on and off microstrips within antennas arrays. Microstrip antennas can be made multi-mode using positive-intrinsic-negative diodes, which function as electronic radio frequency switches by changing between positive, negative and neutral states. Turning off antennas causes the multiband microstrip antennas to behave as if it were smaller and receive lower wavelength frequencies.

Microstrip antennas can be combined to make larger ones.
Microstrip antennas can be combined to make larger ones. | Source

The Advantages of Microstrip Antennas

Microstrip antennas’ low profile allows manufacturers to fold or mold them to curved surfaces, such as the dashboard of a car. Low-cost etching with acidic paste is one method of manufacturing microstrip antennas. Microstrip antennas have low radar visibility, a useful trait for military aircraft.

Microstrip antennas assembled into fractal arrays use less material than a single, large antenna. Microstrip antennas assembled into an array weigh less than a conventional antenna, so they require less support than other antennas.

Microstrip antennas can connect directly to circuit card assemblies using solder instead of using cables. This is especially helpful on cell phone towers or antenna towers already littered with coax cable.

Placing slotted antennas with holes or slots cut out in an antenna array further increases the range of frequency bands it receives at a relatively low cost.

The Disadvantages of Microstrip Antennas

Small microstrip antennas only handle a few watts of power, while larger units can manage a few hundred to a few thousand watts of power. This limits the outgoing signal strength of microstrip antennas. Single microstrip antennas have little ohmic loss, also called resistive heating. Multiband microstrip antennas have greater heat generation from ohmic loss. This can affect the thin printed wiring boards used in most microstrip antennas.

Unless signal filters are used to filter out unwanted signals from nearby frequency ranges, multiband microstrip antennas suffer from interference. Thus microstrip antenna arrays suffer insertion loss with increasing size and at higher frequencies. Microstrip antennas have low bandwidth, as well.

Comments

Submit a Comment
  • SpaceShanty profile image

    SpaceShanty 

    7 years ago from United Kingdom

    Thanks for the info, interesting.

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)